Unit 'CYBERGRAPHICS'	Package
[Overview][Constants][Types][Procedures and functions][Variables][Index]	[#morphunits]

ExtractColor

Extract the specified colour/CLUT value from a given CyberGraphX RastPort

Declaration

Source position: cybergraphics.pas line 304

function ExtractColor(

a0arg: PRastPort;

BitMap: PBitMap;

Colour: LongWord;

SrcX: LongWord;

SrcY: LongWord;

Width: LongWord;

Height: LongWord

):LongWord;

Arguments

`a0arg`		pointer to a CyberGraphX RastPort structure
`BitMap`		Planar destination bitmap that has at least a depth of one and the minimum width and height specified.
`Colour`		the color that should be extracted in AARRGGBB format for true color rastports or in indexed mode for CLUT rastports (index in BB).
`SrcX`		X starting point in the RastPort that should be analyzed
`SrcY`		Y starting point in the RastPort that should be analyzed
`Width`		Width of the rectangle that should be analyzed
`Height`		Height of the rectangle that should be analyzed

Function result

Returns True (<> 0) if colour could be extracted, False (= 0) if not

Description

Extract the specified colour/CLUT value from a given CyberGraphX RastPort into a single plane bitmap starting at a certain x,y location and using the specified width and height. Use this function if you want to create masks. (V41)

Errors

This call was a no-op in very early revisions of cybergraphics v41