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[Home](https://qb64.com) • [Forums](https://qb64.boards.net/) • [News](news.md) • [GitHub](https://github.com/QB64Official/qb64) • [Wiki](https://github.com/QB64Official/qb64/wiki) • [Samples](samples.md) • [InForm](inform.md) • [GX](gx.md) • [QBjs](qbjs.md) • [Community](community.md) • [More...](more.md)
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## Wiki
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## Original QBasic keywords:
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- **[PRINT](wiki/PRINT.md)**
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- **[VIEW](wiki/VIEW.md)**
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**These QBasic keywords (with a few noted exceptions) will work in all versions of QB64.**
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### A
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* [ABS](ABS) (function) converts any negative numerical value to a positive value.
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* [CALL ABSOLUTE](CALL-ABSOLUTE) (statement) is used to access computer interrupt registers.
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* [ACCESS](ACCESS) (file statement) sets the read and write access of a file when opened.
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* [ALIAS](ALIAS) (QB64 [DECLARE LIBRARY](DECLARE-LIBRARY) statement) denotes the actual name of an imported [FUNCTION](FUNCTION) or [SUB](SUB) procedure.
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* [AND](AND) (logical operator) is used to compare two numerical values bitwise.
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* [AND (boolean)](AND-(boolean)) conditional operator is used to include another evaluation in an [IF...THEN](IF...THEN) or [Boolean](Boolean) statement.
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* [APPEND](APPEND) (file mode) creates a new file or allows an existing file to have data added using [WRITE (file statement)](WRITE-(file-statement)) or [PRINT (file statement)](PRINT-(file-statement))
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* [AS](AS) is used to denote a variable type or file number.
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* [ASC](ASC) (function) returns the [ASCII](ASCII) code number of a text [STRING](STRING) character.
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* [ASC (statement)](ASC-(statement)) (QB64 only) sets the code value of an [ASCII](ASCII) text character at a designated [STRING](STRING) position.
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* [ATN](ATN) (function) or arctangent returns the angle in radians of a numerical [TAN](TAN) value.
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### B
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* [BEEP](BEEP) (statement) creates an error sound of a fixed duration.
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* [BINARY](BINARY) (file mode) creates or opens an existing file for [GET](GET) and [PUT](PUT) byte-wise access.
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* [BLOAD](BLOAD) (statement) transfers the contents of a [BINARY](BINARY) [BSAVE](BSAVE) file to a specific [Arrays](Arrays).
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* [BSAVE](BSAVE) (statement) transfers the contents of an [Arrays](Arrays) to a specified size [BINARY](BINARY) file.
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* [BYVAL](BYVAL) (statement) assigns a numerical variable value by its value, not the name.
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### C
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* [CALL](CALL) (statement) optional statement that sends the program to a [SUB](SUB) procedure. Requires parameters be enclosed in brackets(parenthesis).
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* [CALL ABSOLUTE](CALL-ABSOLUTE) (statement) is used to access computer interrupt registers.
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* [CASE](CASE) ([SELECT CASE](SELECT-CASE) condition) designates specific conditions in a [SELECT CASE](SELECT-CASE) statement block.
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* [CASE ELSE](CASE-ELSE) ([SELECT CASE](SELECT-CASE) condition) designates an alternative condition to be evaluated in a [SELECT CASE](SELECT-CASE) statement block.
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* [CASE IS](CASE-IS) ([SELECT CASE](SELECT-CASE) condition) designates specific conditions in a [SELECT CASE](SELECT-CASE) statement block.
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* [CDBL](CDBL) (function) returns the closest [DOUBLE](DOUBLE) value of a number.
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* [CHAIN](CHAIN) (statement) sends a program to another specified program module or compiled program.
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* [CHDIR](CHDIR) (statement) changes the current program path for file access.
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* [CHR$](CHR$) (function) returns a text [STRING](STRING) character by the specified [ASCII](ASCII) code number.
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* [CINT](CINT) (function) returns the closest [INTEGER](INTEGER) value of a numerical value.
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* [CIRCLE](CIRCLE) (statement) creates a circle, ellipse or arc at a designated graphical coordinate position.
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* [CLEAR](CLEAR) (statement) sets all variable and array values to zero number values or empty [STRING](STRING)s.
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* [CLNG](CLNG) (function) returns the closest [LONG](LONG) value of a numerical value.
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* [CLOSE](CLOSE) (statement) closes specific file number(s) or all files when a number is not specified.
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* [CLS](CLS) (statement) clears a program [SCREEN](SCREEN), [VIEW](VIEW) port or [WINDOW](WINDOW).
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* [COLOR](COLOR) (statement) sets the current text foreground and/or background color to be used.
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* [COMMAND$](COMMAND$) (function) returns the command line arguments passed when a program is run.
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* [COMMON](COMMON) (statement) sets a variable name as shared by [CHAIN](CHAIN)ed program modules.
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* [CONST](CONST) (statement) sets a variable name and its value as a constant value to be used by all procedures.
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* [COS](COS) (function) returns the cosine of a radian angle value.
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* [CSNG](CSNG) (function) returns the closest [SINGLE](SINGLE) value of a numerical value.
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* [CSRLIN](CSRLIN) (function) returns the present [PRINT](PRINT) cursor text row [SCREEN](SCREEN) coordinate position.
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* [CVD](CVD) (function) returns the [DOUBLE](DOUBLE) numerical value of an 8 byte [MKD$](MKD$) [STRING](STRING).
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* [CVDMBF](CVDMBF) (function) returns the [DOUBLE](DOUBLE) numerical value of a [MKDMBF$](MKDMBF$) [STRING](STRING).
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* [CVI](CVI) (function) returns the [INTEGER](INTEGER) numerical value of a 2 byte [MKI$](MKI$) [STRING](STRING).
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* [CVL](CVL) (function) returns the [LONG](LONG) numerical value of a 4 byte [MKL$](MKL$) [STRING](STRING).
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* [CVS](CVS) (function) returns the [SINGLE](SINGLE) numerical value of a 4 byte [MKS$](MKS$) [STRING](STRING).
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* [CVSMBF](CVSMBF) (function) returns the [SINGLE](SINGLE) numerical value of a [MKSMBF$](MKSMBF$) [STRING](STRING).
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### D
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* [DATA](DATA) (statement) creates a line of fixed program information separated by commas.
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* [DATE$](DATE$) (function) returns the present Operating System date [STRING](STRING) formatted as mm-dd-yyyy.
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* [DATE$ (statement)](DATE$-(statement)) sets the date of the Operating System using a mm-dd-yyyy [STRING](STRING) format.
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* DECLARE [SUB](SUB)/[FUNCTION](FUNCTION) (BASIC statement) declares a [SUB](SUB) or [FUNCTION](FUNCTION) procedure at the start of a program. Not required in QB64.
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* [DECLARE LIBRARY](DECLARE-LIBRARY) declares a C++, SDL or Operating System [SUB](SUB) or [FUNCTION](FUNCTION) to be used.
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* [DECLARE DYNAMIC LIBRARY](DECLARE-DYNAMIC-LIBRARY) declares DYNAMIC, CUSTOMTYPE or STATIC library(DLL) [SUB](SUB) or [FUNCTION](FUNCTION).
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* [DEF SEG](DEF-SEG) (statement) defines a segment in memory to be accessed by a memory procedure.
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* [DEFDBL](DEFDBL) (statement) defines a set of undefined variable name starting letters as [DOUBLE](DOUBLE) type numerical values.
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* [DEFINT](DEFINT) (statement) defines a set of undefined variable name starting letters as [INTEGER](INTEGER) type numerical values.
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* [DEFLNG](DEFLNG) (statement) defines a set of undefined variable name starting letters as [LONG](LONG) type numerical values.
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* [DEFSNG](DEFSNG) (statement) defines a set of undefined variable name starting letters as [SINGLE](SINGLE) type numerical values.
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* [DEFSTR](DEFSTR) (statement) defines a set of undefined variable name starting letters as [STRING](STRING) type values.
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* [DIM](DIM) (statement) defines a variable as a specified type and can size a [STATIC](STATIC) array.
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* [DO...LOOP](DO...LOOP) (statement) sets a recursive procedure loop that can be ignored or exited using conditional arguments.
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* [DOUBLE](DOUBLE) (numerical type #) 8 byte value limited to values up to 15 decimal places.
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* [DRAW](DRAW) (statement) uses a special [STRING](STRING) format that draws graphical lines in specific directions.
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* [$DYNAMIC]($DYNAMIC) ([Metacommand](Metacommand)) used at the start of a program to set all program arrays as changeable in size using [REDIM](REDIM).
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### E
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* [ELSE](ELSE) ([IF...THEN](IF...THEN) statement) is used to direct program flow when no other condition is evaluated as true.
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* [ELSEIF](ELSEIF) ([IF...THEN](IF...THEN) statement) is used with [THEN](THEN) to set alternate conditional evaluations.
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* [END](END) (statement) sets the end of a program, sub-procedure, statement block, [DECLARE LIBRARY](DECLARE-LIBRARY) or [TYPE](TYPE) definition.
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* [IF...THEN](IF...THEN) (statement) [END](END)s an IF...THEN conditional block statement using more than one line of code.
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* [ENVIRON](ENVIRON) (statement) temporarily sets an environmental key/pair value.
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* [ENVIRON$](ENVIRON$) (function) returns a specified string setting or numerical position as an environmental [STRING](STRING) value.
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* [EOF](EOF) (file function) returns -1 when a file [INPUT (file statement)](INPUT-(file-statement)) or [GET](GET) has reached the end of a file.
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* [EQV](EQV) (logic operator) is used to compare two numerical values bitwise.
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* [ERASE](ERASE) (statement) clears the values from [$STATIC]($STATIC) arrays and completely removes [$DYNAMIC]($DYNAMIC) arrays.
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* [ERDEV](ERDEV) (function) returns an error code from the last device to create an error.
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* [ERDEV$](ERDEV$) (function) returns the 8 character name of the last device to declare an error as a [STRING](STRING).
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* [ERL](ERL) (error function) returns the closest line number before an error occurred if line numbers are used.
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* [ERR](ERR) (function) returns the [ERROR Codes](ERROR-Codes) when a program error occurs.
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* [ERROR](ERROR) (statement) sets a specific [ERROR Code](ERROR-Codes) to be simulated.
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* [EVERYCASE](SELECT-CASE) Used on [SELECT CASE](SELECT-CASE) statement.
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* [EXIT](EXIT) (statement) immediately exits a program [FOR...NEXT](FOR...NEXT), [DO...LOOP](DO...LOOP), [SUB](SUB) or [FUNCTION](FUNCTION) procedure.
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* [EXP](EXP) (function) returns the value of e to the exponential power specified.
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### F
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* [FIELD](FIELD) (statement) defines the variable sizes to be written or read from a file.
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* [FILEATTR](FILEATTR) (function) returns the current file access mode.
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* [FILES](FILES) (statement) returns a list of files in the current directory path to the [SCREEN](SCREEN).
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* [FIX](FIX) (function) returns the rounded [INTEGER](INTEGER) value of a numerical value.
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* [FOR...NEXT](FOR...NEXT) (statement) creates a recursive loop procedure that loop a specified number of times.
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* [FOR (file statement)](FOR-(file-statement)) used in an [OPEN](OPEN) file or device statement to indicate the access mode.
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* [FRE](FRE) (function) returns the number of bytes of Memory available to running programs.
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* [FREE (QB64 TIMER statement)](TIMER) frees a numbered TIMER event in QB64.
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* [FREEFILE](FREEFILE) (file function) returns a file number that is currently not in use by the Operating System.
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* [FUNCTION](FUNCTION) (procedure block) sub-procedure that can calculate and return one value to a program in its name.
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### G
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* [GET](GET) (file statement) reads a file sequentially or at a specific position and returns the value as the variable type used.
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* [GET (TCP/IP statement)](GET-(TCP-IP-statement)) reads a connection port to return a value.
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* [GET (graphics statement)](GET-(graphics-statement)) maps an area the current [SCREEN](SCREEN) video information and places it in an [INTEGER](INTEGER) [arrays](arrays).
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* [GOSUB](GOSUB) (statement) sends the program to a designated line label procedure in the main program.
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* [GOTO](GOTO) (statement) sends the program to a designated line number or line label in a procedure.
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### H
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* [HEX$](HEX$) (function) returns the hexadecimal (base 16) [STRING](STRING) representation of the [INTEGER](INTEGER) part of any value.
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### I
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* [IF...THEN](IF...THEN) (statement) a conditional block statement used control program flow.
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* [IMP](IMP) (logic operator) is used to compare two numerical values bitwise.
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* [$INCLUDE]($INCLUDE) ([Metacommand](Metacommand)) designates a text code library file to include with the program.
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* [INKEY$](INKEY$) (function) [ASCII](ASCII) returns a [STRING](STRING) value entry from the keyboard.
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* [INP](INP) (function) returns a numerical value from a specified port register address. See [Keyboard scancodes](Keyboard-Scancodes)
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* [INPUT](INPUT) (statement) a user input that returns a value to one or more specified variable(s).
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* [INPUT (file mode)](INPUT-(file-mode)) [OPEN](OPEN) statement that only allows an existing file to be read using [INPUT (file statement)](INPUT-(file-statement)) or [INPUT$](INPUT$).
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* [INPUT (file statement)](INPUT-(file-statement)) reads a file sequentially using the variable types designated.
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* [INPUT$](INPUT$) (function) returns a designated number of [STRING](STRING) bytes from the keyboard entry or a file number.
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* [INSTR](INSTR) (function) returns the position in a text [STRING](STRING) where a character sequence match starts.
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* [INT](INT) (function) rounds a numerical value to an [INTEGER](INTEGER) value by removing the decimal point fraction.
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* [INTEGER](INTEGER) (% numerical type) 2 byte whole values from -32768 to 32767.
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* [INTERRUPT](INTERRUPT) (statement) is used to access computer interrupt registers.
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* [INTERRUPTX](INTERRUPTX) (statement) is used to access computer interrupt registers.
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* [IOCTL](IOCTL) (statement)
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* [IOCTL$](IOCTL$) (function)
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### K
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* [KEY n](KEY-n) (statement) used with [ON KEY(n)](ON-KEY(n)) events to assign a "soft key" string to a key or create a user defined key.
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* [KEY(n)](KEY(n)) (statement) used with [ON KEY(n)](ON-KEY(n)) events to assign, enable, disable or suspend event trapping.
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* [KEY LIST](KEY-LIST) (statement) lists the 12 Function key soft key string assignments going down left side of screen.
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* [KILL](KILL) (statement) deletes the specified file without a warning. Remove empty folders with [RMDIR](RMDIR).
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### L
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* [LBOUND](LBOUND) (function) returns the lower boundary of the specified array.
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* [LCASE$](LCASE$) (function) returns the lower case value of a [STRING](STRING).
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* [LEFT$](LEFT$) (function) returns the specified number of text characters from the left end of a [STRING](STRING).
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* [LEN](LEN) (function) returns the length or number of characters in a [STRING](STRING) value in bytes.
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* [LET](LET) (statement) assigns a variable a literal value. Not required.
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* [LINE](LINE) (statement) creates a graphic line or box on the [SCREEN](SCREEN).
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* [LINE INPUT](LINE-INPUT) (statement) user input can be any text character including commas and quotes as a [STRING](STRING) value only.
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* [LINE INPUT (file statement)](LINE-INPUT-(file-statement)) returns an entire text file line and returns it as a [STRING](STRING) value.
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* [KEY LIST](KEY-LIST) displays the current [ON KEY(n)](ON-KEY(n)) function key (F1 to F10) "soft key" settings.
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* [LOC](LOC) (function) returns the present file byte position or number of bytes in the [OPEN COM](OPEN-COM) buffer.
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* [LOCATE](LOCATE) (statement) sets the text cursor's row and column position for a [PRINT](PRINT) or [INPUT](INPUT) statement.
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* [LOCK](LOCK) (statement) restricts access to portions or all of a file by other programs or processes.
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* [LOF](LOF) (function) returns the size of an [OPEN](OPEN) file in bytes.
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* [LOG](LOG) (function) returns the natural logarithm of a specified numerical value
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* [LONG](LONG) (& numerical type) 4 byte whole values from -2147483648 to 2147483647.
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* [DO...LOOP](DO...LOOP) (block statement) bottom end of a recursive DO loop.
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* [LPOS](LPOS) (function) returns the printer head position.
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* [LPRINT](LPRINT) (statement) sends [STRING](STRING) data to the default LPT or USB printer.
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* [LPRINT USING](LPRINT-USING) (statement) sends template formatted text to the default LPT or USB printer.
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* [LSET](LSET) (statement) left justifies the text in a string so that there are no leading spaces.
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* [LTRIM$](LTRIM$) (function) returns a [STRING](STRING) value with no leading spaces.
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### M
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* [MID$](MID$) (function) returns a designated portion of a [STRING](STRING).
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* [MID$ (statement)](MID$-(statement)) redefines existing characters in a [STRING](STRING).
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* [MKD$](MKD$) (function) returns an 8 byte [ASCII](ASCII) [STRING](STRING) representation of a [DOUBLE](DOUBLE) numerical value.
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* [MKDIR](MKDIR) (statement) creates a new folder in the current or designated program path.
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* [MKDMBF$](MKDMBF$) (function) returns an 8 byte Microsoft Binary Format [STRING](STRING) representation of a [DOUBLE](DOUBLE) numerical value.
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* [MKI$](MKI$) (function) returns a 2 byte [ASCII](ASCII) [STRING](STRING) representation of an [INTEGER](INTEGER).
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* [MKL$](MKL$) (function) returns a 4 byte [ASCII](ASCII) [STRING](STRING) representation of a [LONG](LONG) numerical value.
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* [MKS$](MKS$) (function) returns a 4 byte [ASCII](ASCII) [STRING](STRING) representation of a [SINGLE](SINGLE) numerical value.
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* [MKSMBF$](MKSMBF$) (function) returns an 8 byte Microsoft Binary Format [STRING](STRING) representation of a [DOUBLE](DOUBLE) numerical value.
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* [MOD](MOD) (math operator) performs integer remainder division on a numerical value.
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### N
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* [NAME](NAME) (statement) names an existing file name [AS](AS) a new file name.
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* [NEXT](NEXT) (statement) bottom end of a [FOR...NEXT](FOR...NEXT) counter loop to returns to the start or a [RESUME](RESUME) error.
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* [NOT](NOT) (logical operator) inverts the value of a logic operation or returns True when a [boolean](boolean) evaluation is False.
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### O
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* [OCT$](OCT$) (function) returns the octal (base 8) [STRING](STRING) representation of the [INTEGER](INTEGER) part of any value.
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* [OFF](OFF) (event statement) turns off all [ON](ON) event checking.
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* [ON COM(n)](ON-COM(n)) (statement) sets up a COM port event procedure call.
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* [ON ERROR](ON-ERROR) (statement) sets up and activates an error event checking procedure call. Use to avoid program errors.
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* [ON KEY(n)](ON-KEY(n)) (statement) sets up a keyboard key entry event procedure.
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* [ON PEN](ON-PEN) (statement) sets up a pen event procedure call.
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* [ON PLAY(n)](ON-PLAY(n)) (statement) sets up a [PLAY](PLAY) event procedure call.
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* [ON STRIG(n)](ON-STRIG(n)) (statement) sets up a joystick button event procedure call.
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* [ON TIMER(n)](ON-TIMER(n)) (statement) sets up a timed event procedure call.
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* [ON UEVENT](ON-UEVENT) (statement) **Not implemented in QB64.**
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* [ON...GOSUB](ON...GOSUB) (statement) sets up a numerical event procedure call.
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* [ON...GOTO](ON...GOTO) (statement) sets up a numerical event procedure call.
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* [OPEN](OPEN) (file statement) opens a file name for an access mode with a specific file number.
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* [OPEN COM](OPEN-COM) (statement) opens a serial communication port for access at a certain speed and mode.
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* [OPTION BASE](OPTION-BASE) (statement) can set the lower boundary of all arrays to 1.
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* [OR](OR) (logic operator) is used to compare two numerical values bitwise.
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* [OR (boolean)](OR-(boolean)) conditional operator is used to include an alternative evaluation in an [IF...THEN](IF...THEN) or [Boolean](Boolean) statement.
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* [OUT](OUT) (statement) writes numerical data to a specified register port.
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* [OUTPUT](OUTPUT) (file mode) creates a new file or clears all data from an existing file to access the file sequentially.
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### P
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* [PAINT](PAINT) (statement) fills an enclosed area of a graphics [SCREEN](SCREEN) with a color until it encounters a specific colored border.
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* [PALETTE](PALETTE) (statement) sets the Red, Green and Blue color attribute intensities using a RGB multiplier calculation.
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* [PALETTE USING](PALETTE-USING) (statement) sets the color intensity settings using a designated [arrays](arrays).
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* [PCOPY](PCOPY) (statement) swaps two designated memory page images when page swapping is enabled in the [SCREEN](SCREEN) statement.
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* [PEEK](PEEK) (function) returns a numerical value from a specified segment address in memory.
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* [PEN](PEN) (function) returns requested information about the light pen device used.
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* [PEN (statement)](PEN-(statement)) enables/disables or suspends event trapping of a light pen device.
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* [PLAY(n)](PLAY(n)) (function) returns the number of notes currently in the background music queue.
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* [PLAY](PLAY) (statement) uses a special [STRING](STRING) format that can produce musical tones and effects.
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* [PMAP](PMAP) (function) returns the physical or WINDOW view graphic coordinates.
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* [POINT](POINT) (function) returns the color attribute number or 32 bit [_RGB32](_RGB32) value.
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* [POKE](POKE) (statement) writes a numerical value to a specified segment address in memory.
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* [POS](POS) (function) returns the current text column position of the text cursor.
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* [PRESET](PRESET) (statement) sets a pixel coordinate to the background color unless one is specified.
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* [PRINT](PRINT) (statement) prints text [STRING](STRING) or numerical values to the [SCREEN](SCREEN).
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* [PRINT (file statement)](PRINT-(file-statement)) prints text [STRING](STRING) or numerical values to a file.
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* [PRINT USING](PRINT-USING) (statement) prints a template formatted [STRING](STRING) to the [SCREEN](SCREEN).
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* [PRINT USING (file statement)](PRINT-USING-(file-statement)) prints a template formatted [STRING](STRING) to a file.
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* [PSET](PSET) (statement) sets a pixel coordinate to the current color unless a color is designated.
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* [PUT](PUT) (file I/O statement) writes data sequentially or to a designated position using a variable value.
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* [PUT (TCP/IP statement)](PUT-(TCP-IP-statement)) sends raw data to a user's connection handle.
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* [PUT (graphics statement)](PUT-(graphics-statement)) places pixel data stored in an [INTEGER](INTEGER) array to a specified area of the [SCREEN](SCREEN).
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### R
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* [RANDOM](RANDOM) (file mode) creates a file or opens an existing file to [GET](GET) and [PUT](PUT) records of a set byte size.
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* [RANDOMIZE](RANDOMIZE) (statement) sets the random seed value for a specific sequence of random [RND](RND) values.
|
||||
* [RANDOMIZE](RANDOMIZE) restarts the designated seed value's random sequence of values from the beginning.
|
||||
* [READ](READ) (statement) reads values from a [DATA](DATA) field. [ACCESS](ACCESS) READ is used with the [OPEN](OPEN) statement.
|
||||
* [REDIM](REDIM) (statement) creates a new [$DYNAMIC]($DYNAMIC) array or resizes one without losing data when [_PRESERVE](_PRESERVE) is used.
|
||||
* [REM](REM) (statement) or an apostrophe tells the program to ignore statements following it on the same line.
|
||||
* [RESET](RESET) (statement) closes all files and writes the directory information to a diskette before it is removed from a disk drive.
|
||||
* [RESTORE](RESTORE) (statement) resets the [DATA](DATA) pointer to the start of a designated field of data.
|
||||
* [RESUME](RESUME) (statement) an [ERROR Codes](ERROR-Codes) handling procedure exit that can send the program to a line number or the [NEXT](NEXT) code line.
|
||||
* [RETURN](RETURN) (statement) returns the program to the code immediately following a [GOSUB](GOSUB) call.
|
||||
* [RIGHT$](RIGHT$) (function) returns a specific number of text characters from the right end of a [STRING](STRING).
|
||||
* [RMDIR](RMDIR) (statement) removes an empty folder from the current path or the one designated.
|
||||
* [RND](RND) (function) returns a random number value from 0 to .9999999.
|
||||
* [RSET](RSET) (statement) right justifies a string value so that any end spaces are moved to the beginning.
|
||||
* [RTRIM$](RTRIM$) (function) returns a [STRING](STRING) with all spaces removed from the right end.
|
||||
* [RUN](RUN) (statement) clears and restarts the program currently in memory or executes another specified program.
|
||||
|
||||
### S
|
||||
|
||||
* [SADD](SADD) (function) returns the address of a STRING variable as an offset from the current data segment.
|
||||
* [SCREEN (function)](SCREEN-(function)) can return the [ASCII](ASCII) character code or color of the text at a text designated coordinate.
|
||||
* [SCREEN](SCREEN) (statement) sets the display mode and size of the program window.
|
||||
* [SEEK](SEEK) (function) returns the present byte position in an [OPEN](OPEN) file.
|
||||
* [SEEK (statement)](SEEK-(statement)) moves to a specified position in an [OPEN](OPEN) file.
|
||||
* [SELECT CASE](SELECT-CASE) (statement) a program flow block that can handle numerous conditional evaluations.
|
||||
* [SETMEM](SETMEM) (function) sets the memory to use.
|
||||
* [SGN](SGN) (function) returns -1 for negative, 0 for zero, and 1 for positive numerical values.
|
||||
* [SHARED](SHARED) (statement) designates that a variable can be used by other procedures or the main procedure when in a sub-procedure.
|
||||
* [SHELL](SHELL) (statement) sends [STRING](STRING) commands to the command line. SHELL calls will not affect the current path.
|
||||
* [SHELL (function)](SHELL-(function)) executes an external command or calls another program. Returns codes sent by [END](END) or [SYSTEM](SYSTEM).
|
||||
* [SIGNAL](SIGNAL) (OS 2 event)
|
||||
* [SIN](SIN) (function) returns the sine of a radian angle.
|
||||
* [SINGLE](SINGLE) (! numerical type) 4 byte floating decimal point values up to 7 decimal places.
|
||||
* [SLEEP](SLEEP) (statement) pauses the program for a designated number of seconds or until a key is pressed.
|
||||
* [SOUND](SOUND) (statement) creates a sound of a specified frequency and duration.
|
||||
* [SPACE$](SPACE$) (function) returns a designated number of spaces to a [STRING](STRING).
|
||||
* [SPC](SPC) (function) moves the text cursor a number of spaces on the [SCREEN](SCREEN).
|
||||
* [SQR](SQR) (function) returns the square root of a non-negative number.
|
||||
* [STATIC](STATIC) (statement) creates a [SUB](SUB) or [FUNCTION](FUNCTION) variable that retains its value.
|
||||
* [$STATIC]($STATIC) ([Metacommand](Metacommand)) used at the start of a program to set all program arrays as unchangeable in size using [DIM](DIM).
|
||||
* [STEP](STEP) (keyword) move relatively from one graphic position or change the counting increment in a [FOR...NEXT](FOR...NEXT) loop.
|
||||
* [STICK](STICK) (function) returns the present joystick position.
|
||||
* [STOP](STOP) (statement) stops a program when troubleshooting or stops an [ON](ON) event.
|
||||
* [STR$](STR$) (function) returns a [STRING](STRING) value of a number with a leading space when it is positive.
|
||||
* [STRIG](STRIG) (function) returns the joystick button press values when read.
|
||||
* [STRIG(n)](STRIG(n)) (statement)
|
||||
* [STRING](STRING) ($ variable type) one byte text variable with [ASCII](ASCII) code values from 0 to 255.
|
||||
* [STRING$](STRING$) (function) returns a designated number of string characters.
|
||||
* [SUB](SUB) (procedure block) sub-procedure that can calculate and return multiple parameter values.
|
||||
* [SWAP](SWAP) (statement) swaps two [STRING](STRING) or numerical values.
|
||||
* [SYSTEM](SYSTEM) (statement) ends a program immediately.
|
||||
|
||||
### T
|
||||
|
||||
* [TAB](TAB) (function) moves a designated number of columns on the [SCREEN](SCREEN).
|
||||
* [TAN](TAN) (function) returns the ratio of [SIN](SIN)e to [COS](COS)ine or tangent value of an angle measured in radians.
|
||||
* [THEN](THEN) ([IF...THEN](IF...THEN) keyword) must be used in a one line [IF...THEN](IF...THEN) program flow statement.
|
||||
* [TIME$](TIME$) (function) returns the present time setting of the Operating System as a format hh:mm:ss [STRING](STRING).
|
||||
* [TIMER](TIMER) (function) returns the number of seconds since midnight as a [SINGLE](SINGLE) value.
|
||||
* [TIMER (statement)](TIMER-(statement)) events based on the designated time interval and timer number.
|
||||
* [TO](TO) indicates a range of numerical values or an assignment of one value to another.
|
||||
* [TYPE](TYPE) (definition) defines a variable type or file record that can include any [STRING](STRING) or numerical types.
|
||||
|
||||
### U
|
||||
|
||||
* [UBOUND](UBOUND) (function) returns the upper-most index number of a designated [arrays](arrays).
|
||||
* [UCASE$](UCASE$) (function) returns an uppercase representation of a specified [STRING](STRING).
|
||||
* [UEVENT](UEVENT) (statement) **Not implemented in QB64.**
|
||||
* [UNLOCK](UNLOCK) (statement) unlocks a designated file or portions of it.
|
||||
* [UNTIL](UNTIL) (condition) evaluates a [DO...LOOP](DO...LOOP) condition until it is True.
|
||||
|
||||
### V
|
||||
|
||||
* [VAL](VAL) (function) returns the numerical value of a [STRING](STRING) number.
|
||||
* [VARPTR](VARPTR) (function) returns the [segment](Segment) pointer address in memory.
|
||||
* [VARPTR$](VARPTR$) (function) returns the string value of a numerical value in memory.
|
||||
* [VARSEG](VARSEG) (function) returns the [segment](Segment) address of a value in memory.
|
||||
* [VIEW](VIEW) (graphics statement) sets up a graphic view port area of the [SCREEN](SCREEN).
|
||||
* [VIEW PRINT](VIEW-PRINT) (statement) sets up a text view port area of the [SCREEN](SCREEN).
|
||||
|
||||
### W
|
||||
|
||||
* [WAIT](WAIT) (statement) waits until a vertical retrace is started or a [SCREEN](SCREEN) draw ends.
|
||||
* [WEND](WEND) (statement) the bottom end of a [WHILE...WEND](WHILE...WEND) loop.
|
||||
* [WHILE](WHILE) (condition) evaluates a [DO...LOOP](DO...LOOP) or [WHILE...WEND](WHILE...WEND) condition until it is False.
|
||||
* [WHILE...WEND](WHILE...WEND) (statement) sets a recursive procedure loop that can only be exited using the [WHILE](WHILE) conditional argument.
|
||||
* [WIDTH](WIDTH) (statement) sets the text column and row sizes in several [SCREEN](SCREEN) modes.
|
||||
* [WINDOW](WINDOW) (statement) maps a window size different from the program's window size.
|
||||
* [WRITE](WRITE) (screen I/O statement) prints variable values to the screen with commas separating each value.
|
||||
* [WRITE (file statement)](WRITE-(file-statement)) writes data to a file with each variable value separated by commas.
|
||||
|
||||
### X
|
||||
|
||||
* [XOR](XOR) (logic operator) is used to compare two numerical values bitwise.
|
||||
|
||||
## QB64 specific keywords
|
||||
|
||||
Keywords beginning with underscores are QB64 specific. **To use them without the prefix, use [$NOPREFIX]($NOPREFIX).** Also note that the underscore prefix is reserved for QB64 KEYWORDS only.
|
||||
|
||||
### _A
|
||||
|
||||
* [_ACCEPTFILEDROP](_ACCEPTFILEDROP) (statement) turns a program window into a valid drop destination for dragging files from Windows Explorer.
|
||||
* [_ACOS](_ACOS) (function) arccosine function returns the angle in radians based on an input [COS](COS)ine value range from -1 to 1.
|
||||
* [_ACOSH](_ACOSH) (function) Returns the nonnegative arc hyperbolic cosine of x, expressed in radians.
|
||||
* [_ALLOWFULLSCREEN](_ALLOWFULLSCREEN) (statement) allows setting the behavior of the ALT+ENTER combo.
|
||||
* [_ALPHA](_ALPHA) (function) returns the alpha channel transparency level of a color value used on a screen page or image.
|
||||
* [_ALPHA32](_ALPHA32) (function) returns the alpha channel transparency level of a color value used on a 32 bit screen page or image.
|
||||
* [_ASIN](_ASIN) (function) Returns the principal value of the arc sine of x, expressed in radians.
|
||||
* [_ASINH](_ASINH) (function) Returns the arc hyperbolic sine of x, expressed in radians.
|
||||
* [_ASSERT](_ASSERT) (statement) Performs debug tests.
|
||||
* [$ASSERTS]($ASSERTS) (metacommand) Enables the [_ASSERT](_ASSERT) macro
|
||||
* [_ATAN2](_ATAN2) (function) Returns the principal value of the [ATN](ATN) of y/x, expressed in radians.
|
||||
* [_ATANH](_ATANH) (function) Returns the arc hyperbolic tangent of x, expressed in radians.
|
||||
* [_AUTODISPLAY](_AUTODISPLAY) (statement) enables the automatic display of the screen image changes previously disabled by [_DISPLAY](_DISPLAY).
|
||||
* [_AUTODISPLAY (function)](_AUTODISPLAY-(function)) returns the current display mode as true (-1) if automatic or false (0) if per request using [_DISPLAY](_DISPLAY).
|
||||
* [_AXIS](_AXIS) (function) returns a [SINGLE](SINGLE) value between -1 and 1 indicating the maximum distance from the device axis center, 0.
|
||||
|
||||
### _B
|
||||
|
||||
* [_BACKGROUNDCOLOR](_BACKGROUNDCOLOR) (function) returns the current [SCREEN](SCREEN) background color.
|
||||
* [_BIT](_BIT) (` numerical type) can return only signed values of 0 (bit off) and -1 (bit on). Unsigned 0 or 1.
|
||||
* [_BLEND](_BLEND) (statement) statement turns on 32 bit alpha blending for the current image or screen mode and is default.
|
||||
* [_BLEND (function)](_BLEND-(function)) returns -1 if enabled or 0 if disabled by [_DONTBLEND](_DONTBLEND) statement.
|
||||
* [_BLINK](_BLINK) (statement) statement turns blinking colors on/off in SCREEN 0
|
||||
* [_BLINK (function)](_BLINK-(function)) returns -1 if enabled or 0 if disabled by [_BLINK](_BLINK) statement.
|
||||
* [_BLUE](_BLUE) (function) function returns the palette or the blue component intensity of a 32-bit image color.
|
||||
* [_BLUE32](_BLUE32) (function) returns the blue component intensity of a 32-bit color value.
|
||||
* [_BUTTON](_BUTTON) (function) returns -1 when a controller device button is pressed and 0 when button is released.
|
||||
* [_BUTTONCHANGE](_BUTTONCHANGE) (function) returns -1 when a device button has been pressed and 1 when released. Zero indicates no change.
|
||||
* [_BYTE](_BYTE) (%% numerical type) can hold signed values from -128 to 127 (one byte or _BIT * 8). Unsigned from 0 to 255.
|
||||
|
||||
### _C
|
||||
|
||||
* [_CAPSLOCK (function)](_CAPSLOCK-(function)) returns -1 when Caps Lock is on
|
||||
* [_CAPSLOCK](_CAPSLOCK) (statement) sets Caps Lock key state
|
||||
* [$CHECKING]($CHECKING) (QB64 C++ [Metacommand](Metacommand)) turns event error checking OFF or ON.
|
||||
* [_CEIL](_CEIL) (function) Rounds x upward, returning the smallest integral value that is not less than x.
|
||||
* [_CINP](_CINP) (function) Returns a key code from $CONSOLE input
|
||||
* [_CLEARCOLOR (function)](_CLEARCOLOR-(function)) returns the current transparent color of an image.
|
||||
* [_CLEARCOLOR](_CLEARCOLOR) (statement) sets a specific color index of an image to be transparent
|
||||
* [_CLIP](_CLIP) ([PUT (graphics statement)](PUT-(graphics-statement)) graphics option) allows placement of an image partially off of the screen.
|
||||
* [_CLIPBOARD$](_CLIPBOARD$) (function) returns the operating system's clipboard contents as a [STRING](STRING).
|
||||
* [_CLIPBOARD$ (statement)](_CLIPBOARD$-(statement)) sets and overwrites the [STRING](STRING) value in the operating system's clipboard.
|
||||
* [_CLIPBOARDIMAGE (function)](_CLIPBOARDIMAGE-(function)) pastes an image from the clipboard into a new QB64 image in memory.
|
||||
* [_CLIPBOARDIMAGE](_CLIPBOARDIMAGE) (statement) copies a valid QB64 image to the clipboard.
|
||||
* [$COLOR]($COLOR) (metacommand) includes named color constants in a program
|
||||
* [_COMMANDCOUNT](_COMMANDCOUNT) (function) returns the number of arguments passed to the compiled program from the command line.
|
||||
* [_CONNECTED](_CONNECTED) (function) returns the status of a TCP/IP connection handle.
|
||||
* [_CONNECTIONADDRESS$](_CONNECTIONADDRESS$) (TCP/IP function) returns a connected user's STRING IP address value using the handle.
|
||||
* [$CONSOLE]($CONSOLE) (QB64 [Metacommand](Metacommand)) creates a console window that can be used throughout a program.
|
||||
* [_CONSOLE](_CONSOLE) (statement) used to turn a console window OFF or ON or to designate [_DEST](_DEST) _CONSOLE for output.
|
||||
* [_CONSOLEINPUT](_CONSOLEINPUT) (function) fetches input data from a [$CONSOLE]($CONSOLE) window to be read later (both mouse and keyboard)
|
||||
* [_CONSOLETITLE](_CONSOLETITLE) (statement) creates the title of the console window using a literal or variable [STRING](STRING).
|
||||
* [_CONTINUE](_CONTINUE) (statement) skips the remaining lines in a control block (DO/LOOP, FOR/NEXT or WHILE/WEND)
|
||||
* [_CONTROLCHR](_CONTROLCHR) (statement) [OFF](OFF) allows the control characters to be used as text characters. [ON](ON) (default) can use them as commands.
|
||||
* [_CONTROLCHR (function)](_CONTROLCHR-(function)) returns the current state of [_CONTROLCHR](_CONTROLCHR) as 1 when OFF and 0 when ON.
|
||||
* [_COPYIMAGE](_COPYIMAGE) (function) copies an image handle value to a new designated handle.
|
||||
* [_COPYPALETTE](_COPYPALETTE) (statement) copies the color palette intensities from one 4 or 8 BPP image to another image.
|
||||
* [_CV](_CV) (function) converts any [_MK$](_MK$) [STRING](STRING) value to the designated numerical type value.
|
||||
* [_CWD$](_CWD$) (function) returns the current working directory as a [STRING](STRING) value.
|
||||
|
||||
### _D
|
||||
|
||||
* [_D2G](_D2G) (function) converts degrees to gradian angle values.
|
||||
* [_D2R](_D2R) (function) converts degrees to radian angle values.
|
||||
* [$DEBUG]($DEBUG) (metacommand) enables debugging features, allowing you to step through your code line by line
|
||||
* [DECLARE LIBRARY](DECLARE-LIBRARY) declares a C++, SDL or Operating System [SUB](SUB) or [FUNCTION](FUNCTION) to be used.
|
||||
* [DECLARE DYNAMIC LIBRARY](DECLARE-DYNAMIC-LIBRARY) declares [DYNAMIC](DYNAMIC), [CUSTOMTYPE](CUSTOMTYPE) or [STATIC](STATIC) library (DLL) [SUB](SUB) or [FUNCTION](FUNCTION).
|
||||
* [_DEFAULTCOLOR](_DEFAULTCOLOR) (function) returns the current default text color for an image handle or page.
|
||||
* [_DEFINE](_DEFINE) (statement) defines a range of variable names according to their first character as a data type.
|
||||
* [_DEFLATE$](_DEFLATE$) (function) compresses a string
|
||||
* [_DELAY](_DELAY) (statement) suspends program execution for a [SINGLE](SINGLE) number of seconds.
|
||||
* [_DEPTHBUFFER](_DEPTHBUFFER) (statement) enables, disables, locks or clears depth buffering.
|
||||
* [_DESKTOPHEIGHT](_DESKTOPHEIGHT) (function) returns the height of the desktop (not program window).
|
||||
* [_DESKTOPWIDTH](_DESKTOPWIDTH) (function) returns the width of the desktop (not program window).
|
||||
* [_DEST](_DEST) (statement) sets the current write image or [SCREEN](SCREEN) page destination for prints or graphics.
|
||||
* [_DEST (function)](_DEST-(function)) returns the current destination screen page or image handle value.
|
||||
* [_DEVICE$](_DEVICE$) (function) returns a [STRING](STRING) expression listing a designated numbered input device name and types of input.
|
||||
* [_DEVICEINPUT](_DEVICEINPUT) (function) returns the [_DEVICES](_DEVICES) number of an [_AXIS](_AXIS), [_BUTTON](_BUTTON) or [_WHEEL](_WHEEL) event.
|
||||
* [_DEVICES](_DEVICES) (function) returns the number of input devices found on a computer system including the keyboard and mouse.
|
||||
* [_DIR$](_DIR$) (function) returns common paths in Windows only, like My Documents, My Pictures, My Music, Desktop.
|
||||
* [_DIREXISTS](_DIREXISTS) (function) returns -1 if the Directory folder name [STRING](STRING) parameter exists. Zero if it does not.
|
||||
* [_DISPLAY](_DISPLAY) (statement) turns off the [_AUTODISPLAY](_AUTODISPLAY) while only displaying the screen changes when called.
|
||||
* [_DISPLAY (function)](_DISPLAY-(function)) returns the handle of the current image that is displayed on the screen.
|
||||
* [_DISPLAYORDER](_DISPLAYORDER) (statement) designates the order to render software, hardware and custom-opengl-code.
|
||||
* [_DONTBLEND](_DONTBLEND) (statement) statement turns off default [_BLEND](_BLEND) 32 bit [_ALPHA](_ALPHA) blending for the current image or screen.
|
||||
* [_DONTWAIT](_DONTWAIT) ([SHELL](SHELL) action) specifies that the program should not wait until the shelled command/program is finished.
|
||||
* [_DROPPEDFILE](_DROPPEDFILE) (function) returns the list of items (files or folders) dropped in a program's window after [_ACCEPTFILEDROP](_ACCEPTFILEDROP) is enabled.
|
||||
|
||||
### _E
|
||||
|
||||
* [_ECHO](_ECHO) (statement) used in conjunction with $IF for the pre-compiler.
|
||||
* [$ELSE]($ELSE) (Pre-Compiler [Metacommand](Metacommand)) used in conjunction with $IF for the pre-compiler.
|
||||
* [$ELSEIF]($ELSEIF) (Pre-Compiler [Metacommand](Metacommand)) used in conjunction with $IF for the pre-compiler.
|
||||
* [$END IF]($END-IF) (Pre-Compiler [Metacommand](Metacommand)) used in conjunction with $IF for the pre-compiler.
|
||||
* [$ERROR]($ERROR) (precompiler [metacommand](metacommand)) used to trigger compiler errors.
|
||||
* [_ERRORLINE](_ERRORLINE) (function) returns the source code line number that caused the most recent runtime error.
|
||||
* [_ERRORMESSAGE$](_ERRORMESSAGE$) (function) returns a human-readable message describing the most recent runtime error.
|
||||
* [$EXEICON]($EXEICON) (Pre-Compiler [Metacommand](Metacommand)) used with a .ICO icon file name to embed the image into the QB64 executable.
|
||||
* [_EXIT (function)](_EXIT-(function)) prevents a user exit and indicates if a user has clicked the close X window button or CTRL + BREAK.
|
||||
|
||||
### _F
|
||||
|
||||
* [_FILEEXISTS](_FILEEXISTS) (function) returns -1 if the file name [STRING](STRING) parameter exists. Zero if it does not.
|
||||
* [_FINISHDROP](_FINISHDROP) (statement) resets [_TOTALDROPPEDFILES](_TOTALDROPPEDFILES) and clears the [_DROPPEDFILE](_DROPPEDFILE) list of items (files/folders).
|
||||
* [_FLOAT](_FLOAT) (numerical type ##) offers the maximum floating-point decimal precision available using QB64.
|
||||
* [_FONT](_FONT) (statement) sets the current font handle to be used by PRINT or [_PRINTSTRING](_PRINTSTRING).
|
||||
* [_FONT (function)](_FONT-(function)) creates a new font handle from a designated image handle.
|
||||
* [_FONTHEIGHT](_FONTHEIGHT) (function) returns the current text or font height.
|
||||
* [_FONTWIDTH](_FONTWIDTH) (function) returns the current text or font width.
|
||||
* [_FREEFONT](_FREEFONT) (statement) releases the current font handle from memory.
|
||||
* [_FREEIMAGE](_FREEIMAGE) (statement) releases a designated image handle from memory.
|
||||
* [_FREETIMER](_FREETIMER) (function) returns an unused timer number value to use with [ON TIMER(n)](ON-TIMER(n)).
|
||||
* [_FULLSCREEN](_FULLSCREEN) (statement) sets the program window to full screen or OFF. Alt + Enter does it manually.
|
||||
* [_FULLSCREEN (function)](_FULLSCREEN-(function)) returns the fullscreen mode in use by the program.
|
||||
|
||||
### _G
|
||||
|
||||
* [_G2D](_G2D) (function) converts gradian to degree angle values.
|
||||
* [_G2R](_G2R) (function) converts gradian to radian angle values.
|
||||
* [_GLRENDER](_GLRENDER) (statement) sets whether context is displayed, on top of or behind the software rendering.
|
||||
* [_GREEN](_GREEN) (function) function returns the palette or the green component intensity of a 32-bit image color.
|
||||
* [_GREEN32](_GREEN32) (function) returns the green component intensity of a 32-bit color value.
|
||||
|
||||
### _H
|
||||
|
||||
* [_HEIGHT](_HEIGHT) (function) returns the height of a designated image handle.
|
||||
* [_HIDE](_HIDE) ([SHELL](SHELL) action) hides the command line display during a shell.
|
||||
* [_HYPOT](_HYPOT) (function) Returns the hypotenuse of a right-angled triangle whose legs are x and y.
|
||||
|
||||
### _I
|
||||
|
||||
* [$IF]($IF) (Pre-Compiler [Metacommand](Metacommand)) used to set an IF condition for the precompiler.
|
||||
* [_ICON](_ICON) (statement) designates a [_LOADIMAGE](_LOADIMAGE) image file handle to be used as the program's icon or loads the embedded icon (see [$EXEICON]($EXEICON)).
|
||||
* [_INCLERRORFILE$](_INCLERRORFILE$) {function) returns the name of the original source code $INCLUDE module that caused the most recent error.
|
||||
* [_INCLERRORLINE](_INCLERRORLINE) (function) returns the line number in an included file that caused the most recent error.
|
||||
* [_INFLATE$](_INFLATE$) (function) decompresses a string
|
||||
* [_INSTRREV](_INSTRREV) (function) allows searching for a substring inside another string, but unlike [INSTR](INSTR) it returns the last occurrence instead of the first one.
|
||||
* [_INTEGER64](_INTEGER64) (&& numerical type) can hold whole numerical values from -9223372036854775808 to 9223372036854775807.
|
||||
|
||||
### _K
|
||||
|
||||
* [_KEYCLEAR](_KEYCLEAR) (statement) clears the keyboard buffers for INKEY$, _KEYHIT, and INP.
|
||||
* [_KEYHIT](_KEYHIT) (function) returns [ASCII](ASCII) one and two byte, SDL Virtual Key and [Unicode](Unicode) keyboard key press codes.
|
||||
* [_KEYDOWN](_KEYDOWN) (function) returns whether CTRL, ALT, SHIFT, combinations and other keys are pressed.
|
||||
|
||||
### _L
|
||||
|
||||
* [$LET]($LET) (Pre-Compiler [Metacommand](Metacommand)) used to set a flag variable for the precompiler.
|
||||
* [_LASTAXIS](_LASTAXIS) (function) returns the number of axis available on a specified number device listed by [_DEVICE$](_DEVICE$).
|
||||
* [_LASTBUTTON](_LASTBUTTON) (function) returns the number of buttons available on a specified number device listed by [_DEVICE$](_DEVICE$).
|
||||
* [_LASTWHEEL](_LASTWHEEL) (function) returns the number of scroll wheels available on a specified number device listed by [_DEVICE$](_DEVICE$).
|
||||
* [_LIMIT](_LIMIT) (statement) sets the loops per second rate to slow down loops and limit CPU usage.
|
||||
* [_LOADFONT](_LOADFONT) (function) designates a [_FONT](_FONT) TTF file to load and returns a handle value.
|
||||
* [_LOADIMAGE](_LOADIMAGE) (function) designates an image file to load and returns a handle value.
|
||||
|
||||
### _M
|
||||
|
||||
* [_MAPTRIANGLE](_MAPTRIANGLE) (statement) maps a triangular image source area to put on a destination area.
|
||||
* [_MAPUNICODE](_MAPUNICODE) (statement) maps a [Unicode](Unicode) value to an [ASCII](ASCII) code number.
|
||||
* [_MAPUNICODE (function)](_MAPUNICODE-(function)) returns the [Unicode](Unicode) (UTF32) code point value of a mapped [ASCII](ASCII) character code.
|
||||
* [_MEM (function)](_MEM-(function)) returns [_MEM](_MEM) block referring to the largest continuous memory region beginning at a designated variable's offset.
|
||||
* [_MEM](_MEM) (variable type) contains read only dot elements for the OFFSET, SIZE, TYPE and ELEMENTSIZE of a block of memory.
|
||||
* [_MEMCOPY](_MEMCOPY) (statement) copies a value from a designated OFFSET and SIZE [TO](TO) a block of memory at a designated OFFSET.
|
||||
* [_MEMELEMENT](_MEMELEMENT) (function) returns a [_MEM](_MEM) block referring to a variable's memory (but not past it).
|
||||
* [_MEMEXISTS](_MEMEXISTS) (function) verifies that a memory block exists for a memory variable name or returns zero.
|
||||
* [_MEMFILL](_MEMFILL) (statement) fills a designated memory block OFFSET with a certain SIZE and TYPE of value.
|
||||
* [_MEMFREE](_MEMFREE) (statement) frees a designated memory block in a program. Only free memory blocks once.
|
||||
* [_MEMGET](_MEMGET) (statement) reads a value from a designated memory block at a designated OFFSET
|
||||
* [_MEMGET (function)](_MEMGET-(function)) returns a value from a designated memory block and OFFSET using a designated variable [TYPE](TYPE).
|
||||
* [_MEMIMAGE](_MEMIMAGE) (function) returns a [_MEM](_MEM) block referring to a designated image handle's memory
|
||||
* [_MEMNEW](_MEMNEW) (function) allocates new memory with a designated SIZE and returns a [_MEM](_MEM) block referring to it.
|
||||
* [_MEMPUT](_MEMPUT) (statement) places a designated value into a designated memory block OFFSET
|
||||
* [_SCREENMOVE](_SCREENMOVE) (_SCREENMOVE parameter) centers the program window on the desktop in any screen resolution.
|
||||
* [_MK$](_MK$) (function) converts a numerical value to a designated [ASCII](ASCII) [STRING](STRING) value.
|
||||
* [_MOUSEBUTTON](_MOUSEBUTTON) (function) returns the status of a designated mouse button.
|
||||
* [_MOUSEHIDE](_MOUSEHIDE) (statement) hides the mouse pointer from view
|
||||
* [_MOUSEINPUT](_MOUSEINPUT) (function) returns a value if the mouse status has changed since the last read.
|
||||
* [_MOUSEMOVE](_MOUSEMOVE) (statement) moves the mouse pointer to a designated position on the program [SCREEN](SCREEN).
|
||||
* [_MOUSEMOVEMENTX](_MOUSEMOVEMENTX) (function) returns the relative horizontal position of the mouse cursor compared to the previous position.
|
||||
* [_MOUSEMOVEMENTY](_MOUSEMOVEMENTY) (function) returns the relative vertical position of the mouse cursor compared to the previous position.
|
||||
* [_MOUSEPIPEOPEN](_MOUSEPIPEOPEN) (function) creates a pipe handle value for a mouse when using a virtual keyboard.
|
||||
* [_MOUSESHOW](_MOUSESHOW) (statement) displays the mouse cursor after it has been hidden or can change the cursor shape.
|
||||
* [_MOUSEWHEEL](_MOUSEWHEEL) (function) returns the number of mouse scroll wheel "clicks" since last read.
|
||||
* [_MOUSEX](_MOUSEX) (function) returns the current horizontal position of the mouse cursor.
|
||||
* [_MOUSEY](_MOUSEY) (function) returns the current vertical position of the mouse cursor.
|
||||
|
||||
### _N
|
||||
|
||||
* [_NEWIMAGE](_NEWIMAGE) (function) creates a designated size program [SCREEN](SCREEN) or page image and returns a handle value.
|
||||
* [$NOPREFIX]($NOPREFIX) (metacommand) allows QB64-specific keywords to be used without the underscore prefix.
|
||||
* [_NUMLOCK (function)](_NUMLOCK-(function)) returns -1 when Num Lock is on
|
||||
* [_NUMLOCK](_NUMLOCK) (statement) sets Num Lock key state
|
||||
|
||||
### _O
|
||||
|
||||
* [_OFFSET (function)](_OFFSET-(function)) returns the memory offset of a variable when used with [DECLARE LIBRARY](DECLARE-LIBRARY) or [_MEM](_MEM) only.
|
||||
* [_OFFSET](_OFFSET) (%& numerical type) can be used store the value of an offset in memory when using [DECLARE LIBRARY](DECLARE-LIBRARY) or [MEM](MEM) only.
|
||||
* [_OPENCLIENT](_OPENCLIENT) (TCP/IP function) connects to a Host on the Internet as a Client and returns the Client status handle.
|
||||
* [_OPENCONNECTION](_OPENCONNECTION) (TCP/IP function) open's a connection from a client that the host has detected and returns a status handle.
|
||||
* [_OPENHOST](_OPENHOST) (TCP/IP function) opens a Host and returns a Host status handle.
|
||||
* [OPTION _EXPLICIT](OPTION--EXPLICIT) (Pre-compiler directive) instructs the compiler to require variable declaration with [DIM](DIM) or an equivalent statement.
|
||||
* [OPTION _EXPLICITARRAY](OPTION--EXPLICITARRAY) (Pre-compiler directive) instructs the compiler to require array declaration with [DIM](DIM) or an equivalent statement.
|
||||
* [_OS$](_OS$) (function) returns the QB64 compiler version in which the program was compiled as [WINDOWS], [LINUX] or [MACOSX] and [32BIT] or [64BIT].
|
||||
|
||||
### _P
|
||||
|
||||
* [_PALETTECOLOR](_PALETTECOLOR) (statement) sets the color value of a palette entry of an image using 256 colors or less palette modes.
|
||||
* [_PALETTECOLOR (function)](_PALETTECOLOR-(function)) return the 32 bit attribute color setting of an image or screen page handle's palette.
|
||||
* [_PI](_PI) (function) returns the value of **π** or parameter multiples for angle or [CIRCLE](CIRCLE) calculations.
|
||||
* [_PIXELSIZE](_PIXELSIZE) (function) returns the pixel palette mode of a designated image handle.
|
||||
* [_PRESERVE](_PRESERVE) ([REDIM](REDIM) action) preserves the data presently in an array when [REDIM](REDIM) is used.
|
||||
* [_PRINTIMAGE](_PRINTIMAGE) (statement) sends an image to the printer that is stretched to the current printer paper size.
|
||||
* [_PRINTMODE](_PRINTMODE) (statement) sets the text or _FONT printing mode on a background when using PRINT or [_PRINTSTRING](_PRINTSTRING).
|
||||
* [_PRINTMODE (function)](_PRINTMODE-(function)) returns the present [_PRINTMODE](_PRINTMODE) value number.
|
||||
* [_PRINTSTRING](_PRINTSTRING) (statement) locates and prints a text [STRING](STRING) using graphic coordinates.
|
||||
* [_PRINTWIDTH](_PRINTWIDTH) (function) returns the pixel width of a text string to be printed using [_PRINTSTRING](_PRINTSTRING).
|
||||
* [_PUTIMAGE](_PUTIMAGE) (statement) maps a rectangular image source area to an image destination area.
|
||||
|
||||
### _R
|
||||
|
||||
* [_R2D](_R2D) (function) converts radians to degree angle values.
|
||||
* [_R2G](_R2G) (function) converts radians to gradian angle values.
|
||||
* [_RED](_RED) (function) function returns the palette or the red component intensity of a 32-bit image color.
|
||||
* [_RED32](_RED32) (function) returns the red component intensity of a 32-bit color value.
|
||||
* [_READBIT](_READBIT) (function) returns the state of the specified bit of an integer variable.
|
||||
* [_RESETBIT](_RESETBIT) (function) is used to set the specified bit of an integer variable to 0.
|
||||
* [$RESIZE]($RESIZE) ([Metacommand](Metacommand)) used with ON allows a user to resize the program window where OFF does not.
|
||||
* [_RESIZE](_RESIZE) (statement) sets resizing of the window ON or OFF and sets the method as _STRETCH or _SMOOTH.
|
||||
* [_RESIZE (function)](_RESIZE-(function)) returns -1 when a program user wants to resize the program screen.
|
||||
* [_RESIZEHEIGHT](_RESIZEHEIGHT) (function) returns the requested new user screen height when [$RESIZE]($RESIZE):ON allows it.
|
||||
* [_RESIZEWIDTH](_RESIZEWIDTH) (function) returns the requested new user screen width when [$RESIZE]($RESIZE):ON allows it.
|
||||
* [_RGB](_RGB) (function) returns the closest palette index OR the [LONG](LONG) 32 bit color value in 32 bit screens.
|
||||
* [_RGB32](_RGB32) (function) returns the [LONG](LONG) 32 bit color value in 32 bit screens only
|
||||
* [_RGBA](_RGBA) (function) returns the closest palette index OR the [LONG](LONG) 32 bit color value in 32 bit screens with the [ALPHA](ALPHA)
|
||||
* [_RGBA32](_RGBA32) (function) returns the [LONG](LONG) 32 bit color value in 32 bit screens only with the [ALPHA](ALPHA)
|
||||
* [_ROUND](_ROUND) (function) rounds to the closest [INTEGER](INTEGER), [LONG](LONG) or [_INTEGER64](_INTEGER64) numerical value.
|
||||
|
||||
### _S
|
||||
|
||||
* [_SCREENCLICK](_SCREENCLICK) (statement) simulates clicking on a point on the desktop screen with the left mouse button.
|
||||
* [_SCREENEXISTS](_SCREENEXISTS) (function) returns a -1 value once a screen has been created.
|
||||
* [$SCREENHIDE]($SCREENHIDE) QB64 [Metacommand](Metacommand) hides the program window from view.
|
||||
* [_SCREENHIDE](_SCREENHIDE) (statement) hides the program window from view.
|
||||
* [_SCREENICON (function)](_SCREENICON-(function)) returns -1 or 0 to indicate if the window has been minimized to an icon on the taskbar.
|
||||
* [_SCREENICON](_SCREENICON) (statement) minimizes the program window to an icon on the taskbar.
|
||||
* [_SCREENIMAGE](_SCREENIMAGE) (function) creates an image of the current desktop and returns an image handle.
|
||||
* [_SCREENMOVE](_SCREENMOVE) (statement) positions program window on the desktop using designated coordinates or the _MIDDLE option.
|
||||
* [_SCREENPRINT](_SCREENPRINT) (statement) simulates typing text into a Windows program using the keyboard.
|
||||
* [$SCREENSHOW]($SCREENSHOW) (QB64 [Metacommand](Metacommand)) displays that program window after it was hidden by [$SCREENHIDE]($SCREENHIDE).
|
||||
* [_SCREENSHOW](_SCREENSHOW) (statement) displays the program window after it has been hidden by [_SCREENHIDE](_SCREENHIDE).
|
||||
* [_SCREENX](_SCREENX) (function) returns the program window's upper left corner horizontal position on the desktop.
|
||||
* [_SCREENY](_SCREENY) (function) returns the program window's upper left corner vertical position on the desktop.
|
||||
* [_SCROLLLOCK (function)](_SCROLLLOCK-(function)) returns -1 when Scroll Lock is on
|
||||
* [_SCROLLLOCK](_SCROLLLOCK) (statement) sets Scroll Lock key state
|
||||
* [_SETALPHA](_SETALPHA) (statement) sets the alpha channel transparency level of some or all of the pixels of an image.
|
||||
* [_SETBIT](_SETBIT) (function) is used to set the specified bit of an integer variable to 1.
|
||||
* [_SHELLHIDE](_SHELLHIDE) (function) returns the code sent by a program exit using [END](END) or [SYSTEM](SYSTEM) followed by an [INTEGER](INTEGER) value.
|
||||
* [_SHL](_SHL) (function) used to shift the bits of a numerical value to the left
|
||||
* [_SHR](_SHR) (function) used to shift the bits of a numerical value to the right.
|
||||
* [Mathematical Operations](Mathematical-Operations) (function) Returns the hyperbolic sine of x radians.
|
||||
* [_SNDBAL](_SNDBAL) (statement) attempts to set the balance or 3D position of a sound file.
|
||||
* [_SNDCLOSE](_SNDCLOSE) (statement) frees and unloads an open sound using the sound handle created by [_SNDOPEN](_SNDOPEN).
|
||||
* [_SNDCOPY](_SNDCOPY) (function) copies a sound handle value to a new designated handle.
|
||||
* [_SNDGETPOS](_SNDGETPOS) (function) returns the current playing position in seconds from a sound file.
|
||||
* [_SNDLEN](_SNDLEN) (function) returns the length of a sound in seconds from a sound file.
|
||||
* [_SNDLIMIT](_SNDLIMIT) (statement) stops playing a sound after it has been playing for a set number of seconds.
|
||||
* [_SNDLOOP](_SNDLOOP) (statement) plays a sound repeatedly until [_SNDSTOP](_SNDSTOP) is used.
|
||||
* [_SNDOPEN](_SNDOPEN) (function) loads a sound file and returns a sound handle.
|
||||
* [_SNDOPENRAW](_SNDOPENRAW) (function) opens a new channel to shove [_SNDRAW](_SNDRAW) content into without mixing.
|
||||
* [_SNDPAUSE](_SNDPAUSE) (statement) stops playing a sound file until resumed.
|
||||
* [_SNDPAUSED](_SNDPAUSED) (function) returns the current pause status of a sound file handle.
|
||||
* [_SNDPLAY](_SNDPLAY) (statement) plays a sound file handle that was created by [_SNDOPEN](_SNDOPEN) or [_SNDCOPY](_SNDCOPY).
|
||||
* [_SNDPLAYCOPY](_SNDPLAYCOPY) (statement) copies a sound handle, plays it and automatically closes the copy when done.
|
||||
* [_SNDPLAYFILE](_SNDPLAYFILE) (statement) directly plays a designated sound file.
|
||||
* [_SNDPLAYING](_SNDPLAYING) (function) returns the current playing status of a sound handle.
|
||||
* [_SNDRATE](_SNDRATE) (function) returns the sound card sample rate to set [_SNDRAW](_SNDRAW) durations.
|
||||
* [_SNDRAW](_SNDRAW) (statement) creates mono or stereo sounds from calculated wave frequency values.
|
||||
* [_SNDRAWDONE](_SNDRAWDONE) (statement) pads a [_SNDRAW](_SNDRAW) stream so the final (partially filled) buffer section is played.
|
||||
* [_SNDRAWLEN](_SNDRAWLEN) (function) returns a value until the [_SNDRAW](_SNDRAW) buffer is empty.
|
||||
* [_SNDSETPOS](_SNDSETPOS) (statement) sets the playing position of a sound handle.
|
||||
* [_SNDSTOP](_SNDSTOP) (statement) stops playing a sound handle.
|
||||
* [_SNDVOL](_SNDVOL) (statement) sets the volume of a sound file handle.
|
||||
* [_SOURCE](_SOURCE) (statement) sets the source image handle.
|
||||
* [_SOURCE (function)](_SOURCE-(function)) returns the present source image handle value.
|
||||
* [_STARTDIR$](_STARTDIR$) (function) returns the user's program calling path as a [STRING](STRING).
|
||||
* [_STRCMP](_STRCMP) (function) compares the relationship between two strings.
|
||||
* [_STRICMP](_STRICMP) (function) compares the relationship between two strings, without regard for case-sensitivity.
|
||||
|
||||
### _T
|
||||
|
||||
* [Mathematical Operations](Mathematical-Operations) (function) Returns the hyperbolic tangent of x radians.
|
||||
* [_TITLE](_TITLE) (statement) sets the program title [STRING](STRING) value.
|
||||
* [_TITLE$](_TITLE$) (function) gets the program title [STRING](STRING) value.
|
||||
* [_TOGGLEBIT](_TOGGLEBIT) (function) is used to toggle the specified bit of an integer variable from 1 to 0 or 0 to 1.
|
||||
* [_TOTALDROPPEDFILES](_TOTALDROPPEDFILES) (function) returns the number of items (files or folders) dropped in a program's window after [_ACCEPTFILEDROP](_ACCEPTFILEDROP) is enabled.
|
||||
* [_TRIM$](_TRIM$) (function) shorthand to [LTRIM$](LTRIM$)([RTRIM$](RTRIM$)("text"))
|
||||
|
||||
### _U
|
||||
|
||||
* [_UNSIGNED](_UNSIGNED) (numerical type) expands the positive range of numerical [INTEGER](INTEGER), [LONG](LONG) or [_INTEGER64](_INTEGER64) values returned.
|
||||
|
||||
### _V
|
||||
|
||||
* [$VERSIONINFO]($VERSIONINFO) ([Metacommand](Metacommand)) adds metadata to Windows only binaries for identification purposes across the OS.
|
||||
* [$VIRTUALKEYBOARD]($VIRTUALKEYBOARD) ([Metacommand](Metacommand) - Deprecated) turns the virtual keyboard ON or OFF for use in touch-enabled devices
|
||||
|
||||
### _W
|
||||
|
||||
* [_WHEEL](_WHEEL) (function) returns -1 when a control device wheel is scrolled up and 1 when scrolled down. Zero indicates no activity.
|
||||
* [_WIDTH (function)](_WIDTH-(function)) returns the width of a [SCREEN](SCREEN) or image handle.
|
||||
* [_WINDOWHANDLE](_WINDOWHANDLE) (function) returns the window handle assigned to the current program by the OS. Windows-only.
|
||||
* [_WINDOWHASFOCUS](_WINDOWHASFOCUS) (function) returns true (-1) if the current program's window has focus. Windows-only.
|
||||
|
||||
## Symbols
|
||||
|
||||
### QB64 and QB Symbols
|
||||
|
||||
*Note: All symbols below can also be used inside of literal quoted strings except for quotation marks.*
|
||||
|
||||
> **Print, Input or File Formatting**
|
||||
|
||||
* [Semicolon](Semicolon) after a [PRINT](PRINT) stops invisible cursor at end of printed value. Can prevent screen rolling. A [Semicolon](Semicolon) after the [INPUT](INPUT) prompt text will display a question mark after the text.
|
||||
* [Comma](Comma) after a [PRINT](PRINT) tabs invisible cursor past end of printed value. After the [INPUT](INPUT) prompt text a [comma](comma) displays no [Question mark](Question-mark).
|
||||
* [Quotation mark](Quotation-mark) delimits the ends of a literal [STRING](STRING) value in a [PRINT](PRINT), [INPUT](INPUT) or [LINE INPUT](LINE-INPUT) statement.
|
||||
* [Question mark](Question-mark) is a shortcut substitute for the [PRINT](PRINT) keyword. Will change to PRINT when cursor leaves the code line.
|
||||
|
||||
### Program Code Markers
|
||||
|
||||
* [Apostrophe](Apostrophe) ignores a line of code or program comment and MUST be used before a [Metacommand](Metacommand). Same as using [REM](REM).
|
||||
* [Comma](Comma) is used to separate [DATA](DATA), [SUB](SUB) or [FUNCTION](FUNCTION) parameter variables.
|
||||
* [Colon](Colon)s can be used to separate two procedure statements on one code line.
|
||||
* [Dollar_Sign](Dollar-Sign) prefix denotes a QBasic [Metacommand](Metacommand).
|
||||
* [Parenthesis](Parenthesis) enclose a math or conditional procedure order, [SUB](SUB) or [FUNCTION](FUNCTION) parameters or to pass by value.
|
||||
* [+](+) [concatenation](Concatenation) operator MUST be used to combine literal string values in a variable definition.
|
||||
* [Quotation mark](Quotation-mark) designates the ends of a literal [STRING](STRING) value. Use [CHR$](CHR$)(34) to insert quotes in a text [STRING](STRING).
|
||||
* [Underscore](Underscore) can be used to continue a line of code to the next program line in **QB64**.
|
||||
|
||||
### Variable Name Type Suffixes
|
||||
|
||||
* [STRING](STRING) text character type: 1 byte
|
||||
* [SINGLE](SINGLE) floating decimal point numerical type (4 bytes)
|
||||
* [DOUBLE](DOUBLE) floating decimal point numerical type (8 bytes)
|
||||
* [_FLOAT](_FLOAT) **QB64** decimal point numerical type (32 bytes)
|
||||
* [_UNSIGNED](_UNSIGNED) **QB64** [INTEGER](INTEGER) positive numerical type when it precedes the 6 numerical suffixes below:
|
||||
* [INTEGER](INTEGER) [INTEGER](INTEGER) numerical type (2 bytes)
|
||||
* [LONG](LONG) [INTEGER](INTEGER) numerical type (4 bytes}
|
||||
* [_INTEGER64](_INTEGER64) **QB64** [INTEGER](INTEGER) numerical type (8 bytes)
|
||||
* [_BIT](_BIT) **QB64** [INTEGER](INTEGER) numerical type (1 bit) (Key below tilde (~) or [CHR$](CHR$)(96))
|
||||
* [_BYTE](_BYTE) **QB64** [INTEGER](INTEGER) numerical type (1 byte)
|
||||
* [_OFFSET](_OFFSET) **QB64** [INTEGER](INTEGER) numerical pointer address type (any byte size required)
|
||||
|
||||
### Numerical Base Prefixes
|
||||
|
||||
* [&B](&B) Base 2: Digits 0 or 1 [**QB64**]
|
||||
* [&O](&O) Base 8: Digits 0 to 7
|
||||
* [&H](&H) Base 16: Digits 0 to F
|
||||
|
||||
### [Mathematical Operations](Mathematical-Operations)
|
||||
|
||||
* [+](+) operator or sign
|
||||
* [-](-) operator or sign
|
||||
* [*](*) operator
|
||||
* [/](/) (floating decimal point) operator
|
||||
* [\\](\\) operator
|
||||
* [^](^) operator
|
||||
* [MOD](MOD) operator
|
||||
|
||||
### [Relational Operations](Relational-Operations)
|
||||
|
||||
* [Equal](Equal) Equal to condition
|
||||
* [Not_Equal](Not-Equal) Not equal condition
|
||||
* [Greater_Than](Greater-Than) Greater than condition
|
||||
* [Less_Than](Less-Than) Less than condition
|
||||
* [Greater_Than_Or_Equal](Greater-Than-Or-Equal) Greater than or equal to condition
|
||||
* [Less_Than_Or_Equal](Less-Than-Or-Equal) Less than or equal to condition
|
||||
|
||||
## References
|
||||
|
||||
Got a question about something?
|
||||
|
||||
* [QB64 FAQ](QB64-FAQ)
|
||||
* [Visit the QB64 Main Site](http://qb64.com)
|
||||
|
||||
Links to other QBasic Sites:
|
||||
|
||||
* [Member programs at QBasic Station](http://qbasicstation.com/index.php?c=p_member)
|
||||
* [QBasic Forum at Network 54](http://www.network54.com/Index/10167)
|
||||
* [Pete's QBasic Forum](http://www.petesqbsite.com/forum/)
|
||||
* [Pete's QBasic Downloads](http://www.petesqbsite.com/downloads/downloads.shtml)
|
||||
|
||||
---
|
||||
|
||||
Although you can find several copies of the QB64 wiki on the internet, many of these exist as *backup copies* due to the past instability issues around QB64 .org and .net websites and (most likely) aren't currently maintained.
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue