Unit 'cybergraphics'	Package
[Overview][Constants][Types][Procedures and functions][Variables][Index]	[#os4units]

ExtractColor

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

Declaration

Source position: cybergraphics.pas line 183

function ExtractColor(

RastPort: PRastPort;

SingleMap: PBitMap;

Colour: LongWord;

SX: LongWord;

SY: LongWord;

Width: LongWord;

Height: LongWord

):LongWord;

Arguments

`Colour`		the color that should be extracted in AARRGGBB format for true color rastports or in indexed mode for CLUT rastports (index in BB).
`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