GXDrawGSPixMapPartOnCGContext

Draw part of a GSPixMap on the given CGContext.

    GSErr GXDrawGSPixMapPartOnCGContext (
      CGContextRef         gc,
      GSPixMapHandle       pixMap,
      const GSRect&        srcRect,
      const GSRect&        dstRect,
      Int32                cgContextHeight,
      AlphaChannelUsage    acUsage
    );

Parameters

gc

The graphics context to draw on.

pixMap

The GSPixMap to be drawn.

srcRect

Rectangle that determines a part of the source pixmap that is to be drawn.

dstRect

Destination rectangle in the graphics context. The picture is stretched to fit this rectangle.

cgContextHeight

Height of the gc graphics context.

acUsage

If this value is AlphaChannelBlending, then the alpha channel value is used for blending the source pixel to the destination pixel. If it is CopyAlphaChannel (default), then the alpha channel value is copied just like the RGB color values.

Return Values

If the function succeeds, the return value is NoError. If the function fails, the return value is the error code.

Remarks

This function acessible only on Macintosh.

Requirements

Version:

GX 10 or later

Header:

Graphics2DMac.h

Import Library:

GXImp.lib

Module:

GX.framework [MAC]

See Also

Mac-specific functions