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Problem with 64bit Pixel Data, and GraphicsExportDrawInputImage

howdy all..

I am getting a really weird error in my graphics component.
(I am trying to get this to work...)

err = QTNewGWorld(&gw, store->pixelFormat, &bounds, NULL, NULL, kICMTempThenAppMemory); 
if (err) goto bail;

hPixMap = GetGWorldPixMap(gw);
if (err) goto bail;
LockPixels(hPixMap);
if (err) goto bail;

err = GraphicsExportDrawInputImage(store->parent, gw, NULL, NULL, &bounds);
if (err) goto bail;

The pixel format is b64a, and when I get to the GraphicsExportDrawInputImage, I get an error: -157

Any ideas??

Thanks!

bob..
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