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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.
24 lines
1.1 KiB
Plaintext
24 lines
1.1 KiB
Plaintext
The {{KW|_CLEARCOLOR (function)|_CLEARCOLOR}} function returns the current transparent color of an image or page.
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{{PageSyntax}}
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:''result&'' = {{KW|_CLEARCOLOR (function)|_CLEARCOLOR}} [{{Parameter|Source_Handle&}}]
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{{PageDescription}}
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* If {{Parameter|Source_Handle&}} is omitted, it is assumed to be the current [[_DEST|destination]] write page.
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* If {{Parameter|Source_Handle&}} is an invalid handle value(-1), then an [[ERROR Codes|invalid handle value]] is returned.
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* In color modes using a palette, the index of the current transparent color value is returned, or -1 if no transparent color is set.
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* In 32-bit color modes, zero is returned.
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* Returns the color that currently is transparent, or if no color is transparent -1 without error.
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* A [[_CLEARCOLOR]] statement can set the transparent color of an image or screen.
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* '''NOTE: Default 32 bit backgrounds are clear black or [[_RGBA]](0, 0, 0, 0)! Use [[CLS]] to make the black opaque!'''
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{{PageSeeAlso}}
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* [[_CLEARCOLOR]] {{text|(sets a clear color)}}
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* [[_SETALPHA]] {{text|(sets color transparency)}}
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* [[Images]]
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{{PageNavigation}} |