mirror of
https://github.com/QB64-Phoenix-Edition/QB64pe.git
synced 2024-07-26 17:55:52 +00:00
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.
47 lines
1.9 KiB
Plaintext
47 lines
1.9 KiB
Plaintext
The {{KW|_PIXELSIZE}} function returns the color depth (Bits Per Pixel) of an image.
|
|
|
|
|
|
{{PageSyntax}}
|
|
:''return&'' = {{KW|_PIXELSIZE}}([{{Parameter|imageHandle&}}])
|
|
|
|
|
|
{{PageDescription}}
|
|
* If {{Parameter|imageHandle&}} is omitted, it is assumed to be a handle to the current write page.
|
|
* Returns:
|
|
:: 0 if the image or screen page specified by {{Parameter|imageHandle&}} is in text mode.
|
|
:: 1 If the image specified by {{Parameter|imageHandle&}} is in 1(B & W), 4(16 color) or 8(256 color) BPP mode.
|
|
:: 4 Image specified is a 24/32-bit compatible mode. Pixels use three bytes, one per Red, Green and Blue color intensity.
|
|
* The [[SCREEN]] or [[_NEWIMAGE]] or [[_LOADIMAGE]] color(256 or 32) mode can influence the pixel sizes that can be returned.
|
|
* If {{Parameter|imageHandle&}} is an invalid handle, then an [[ERROR Codes|invalid handle]] error is returned.
|
|
|
|
|
|
''Example:'' Saving Images for later program use. Handle values could be saved to an array.
|
|
{{CodeStart}} '' ''
|
|
handle1& = _Getimage(sx1, sy1, sx2, sy2, sourcehandle&) ' function call
|
|
|
|
{{Cl|FUNCTION}} GetImage& (sx1, sy1, sx2, sy2, sourcehandle&)
|
|
bytespp = {{Cl|_PIXELSIZE}}(sourcehandle&)
|
|
{{Cl|IF}} bytespp = 4 {{Cl|THEN}} Pal = 32 {{Cl|ELSE}} {{Cl|IF}} bytespp = 1 {{Cl|THEN}} Pal = 256 {{Cl|ELSE}} {{Cl|EXIT FUNCTION}}
|
|
h& = {{Cl|_NEWIMAGE}}({{Cl|ABS}}(sx2 - sx1) + 1, {{Cl|ABS}}(sy2 - sy1) + 1, Pal)
|
|
{{Cl|_PUTIMAGE}} (0, 0), sourcehandle&, h&, (sx1, sy1)-(sx2, sy2) 'image is not displayed
|
|
GetImage& = h&
|
|
{{Cl|END FUNCTION}} '' ''
|
|
{{CodeEnd}}
|
|
{{small|Adapted from code by Galleon}}
|
|
|
|
|
|
''See examples:''
|
|
* [[SAVEIMAGE]] {{text|(SUB to convert image to bitmap)}}
|
|
* [[SaveIcon32]] {{text|(convert any image to icon)}}
|
|
* [[ThirtyTwoBit SUB]] {{text|(convert partial image to bitmap)}}
|
|
* [[Bitmaps]]
|
|
|
|
|
|
{{PageSeeAlso}}
|
|
* [[_LOADIMAGE]]
|
|
* [[_NEWIMAGE]]
|
|
* [[_PUTIMAGE]]
|
|
* [[_COPYPALETTE]]
|
|
|
|
|
|
{{PageNavigation}} |