GtkPreview::put
void put(GdkWindow window, GdkGC gc, int srcx, int srcy, int destx, int desty, int width, int height);
Draws a portion of the preview image into the drawable window. srcx and srcy represent the upper left corner of the source image to be drawn. destx and desty represent the location of the upper left corner of the destination image to be drawn. width and height specify the rectangular portion of the image that is to be drawn.
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