mirror of
https://github.com/QB64-Phoenix-Edition/QB64pe.git
synced 2024-07-05 22:50:23 +00:00
47 lines
1.6 KiB
Plaintext
47 lines
1.6 KiB
Plaintext
The '''COMMAND$''' function returns the DOS commandline arguments passed when a program is run.
|
|
|
|
|
|
|
|
''Syntax:'' variable$ = COMMAND$
|
|
|
|
|
|
* The [[STRING|string]] return value is any parameter following the filename in a [[RUN]] or command line statement.
|
|
* Qbasic returns [[UCASE$|uppercase]] [[STRING]] parameters no matter what case they were sent originally.
|
|
* '''QB64''' does not '''require or return all [[UCASE$|uppercase]]''' values so keep that fact in mind when checking parameters passed!
|
|
* Useful when the programmer wants to add options to the command line of a program for later use by another program.
|
|
* COMMAND$ was not available in QuickBasic versions below 4.0
|
|
|
|
|
|
''Example:'' Compile both programs. ProgramA [[RUN]]s ProgramB with a parameter passed following the filename:
|
|
{{CodeStart}}
|
|
{{Cl|LOCATE}} 12, 36: {{Cl|PRINT}} "ProgramA"
|
|
|
|
{{Cl|LOCATE}} 23, 25: {{Cl|PRINT}} "Press any key to run ProgramB"
|
|
K$ = {{Cl|INPUT$}}(1)
|
|
{{Cl|RUN}} "ProgramB FS" 'pass FS parameter to ProgramB in QB64
|
|
|
|
{{Cl|END}}
|
|
{{CodeEnd}}
|
|
: ''ProgramB'' checks for fullscreen parameter pass in QB64 and goes full screen.
|
|
{{CodeStart}} '' ''
|
|
{{Cl|LOCATE}} 12, 36: {{Cl|PRINT}} "ProgramB"
|
|
parameter$ = {{Cl|UCASE$}}({{Cl|COMMAND$}})
|
|
{{Cl|LOCATE}} 20, 33: {{Cl|PRINT}} "Parameter = " + parameter$
|
|
{{Cl|IF...THEN|IF}} {{Cl|LEFT$}}(parameter$, 2) = "FS" {{Cl|THEN}} {{Cl|_FULLSCREEN}} 'parameter changes to full screen
|
|
|
|
{{Cl|END}} '' ''
|
|
{{CodeEnd}}
|
|
{{OutputStart}} Parameter = FS.EXE
|
|
{{OutputEnd}}
|
|
|
|
|
|
|
|
''See also:''
|
|
|
|
* [[SHELL]], [[RUN]]
|
|
|
|
* [[UCASE$]], [[LCASE$]]
|
|
|
|
|
|
|
|
{{PageNavigation}} |