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https://github.com/QB64-Phoenix-Edition/QB64pe.git
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6e01fc8dce
Added new _STRCMP and _STRICMP commands for quick string comparisons. Cleaned up QB64 to finish removing the QUI (quick user insert) code and folders. Altered UCASE and LCASE routines to be faster in some situations for us.
34 lines
1.2 KiB
Plaintext
34 lines
1.2 KiB
Plaintext
The {{KW|_HEIGHT}} function returns the height of an image handle or current write page.
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{{PageSyntax}}
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:''result&'' = {{KW|_HEIGHT}}[({{Parameter|imageHandle&}})]
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{{PageDescription}}
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* If {{Parameter|imageHandle&}} is omitted, it's assumed to be the handle of the current write page.
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* To get the width of the current program window use zero for the handle value: depth& = _HEIGHT(0)
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* If the image specified by {{Parameter|imageHandle&}} is in text mode, the number of characters per column is returned.
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* If the image specified by {{Parameter|imageHandle&}} is in graphics mode, the number of pixels per column is returned.
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* If {{Parameter|imageHandle&}} is an invalid handle, then an [[ERROR Codes|invalid handle]] error will occur.
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* The maximum pixel coordinate of a program [[SCREEN|screen]] is one less than what the function returns.
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''Example:'' Displays the current program window area.
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{{CodeStart}} '' ''
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{{Cl|SCREEN}} 12
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wide = {{Cl|_WIDTH (function)|_WIDTH}}
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deep = {{Cl|_HEIGHT}}
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{{Cl|PRINT}} "The program screen is"; wide; "X"; deep '' ''
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{{CodeEnd}}
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{{PageSeeAlso}}
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* [[_WIDTH (function)]]
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* [[_LOADIMAGE]]
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* [[_FONTHEIGHT]]
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* [[Bitmaps]]
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{{PageNavigation}} |