Color Pictures in Basic Graphics Ports

You can use Color QuickDraw drawing commands to create a color picture on a computer supporting Color QuickDraw. If the user were to cut the picture and paste it into an application that draws into a basic graphics port, the picture would lose some detail, but should be sufficient for most purposes. This is how basic QuickDraw in System 7 draws an extended version 2 or version 2 picture into a basic graphics port:

QuickDraw maps foreground and background colors to those most closely approximated in basic QuickDraw's eight-color system.
QuickDraw draws pixel patterns created with the MakeRGBPat procedure as bit patterns having approximately the same luminance as the pixel patterns.
QuickDraw replaces other color patterns with the bit pattern contained in the pat1Data field of the PixPat record. (The pat1Data field is initialized to 50 percent gray if the pattern is created with the NewPixPat function; this field is initialized from a 'ppat' resource if the pattern is retrieved with the GetPixPat function.)
QuickDraw converts the pixel image to a bit image.
QuickDraw ignores the values set by the HiliteColor and OpColor procedures, as well as any changes made to the chExtra and pnLocHFrac fields of the original CGrafPort record.

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