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Copies a rectangular area with variable transparency between the content of an ObjBitmap (destination) and that of an AlphaBitmap (source).
The source ractangle and the destination rectangle can have different sizes : an automatic resizing is done.

ObjBitmap _SCPalphaBitmap ( ObjBitmap _dest_ I _destX1_ I _destY1_ I _destX2_ I _destY2_ AlphaBitmap _source_ I _sourceX1_ I _sourceY1_ I _sourceX2_ I _sourceY2_ I _width_ I _height_ )

_dest_
	the ObjBitmap which is the destination of the copy
_destX1_
	the abscissa of the upper left point of the rectangle in the destination ObjBitmap
_destY1_
	the ordinate of the upper left point of the rectangle in the destination ObjBitmap
_destX2_
	the abscissa of the lower right point of the rectangle in the destination ObjBitmap
_destY2_
	the ordinate of the lower right point of the rectangle in the destination ObjBitmap
_source_
	the AlphaBitmap which is the source of the copy
_sourceX1_
	the abscissa of the upper left point of the rectangle in the source AlphaBitmap
_sourceY1_
	the ordinate of the upper left point of the rectangle in the source AlphaBitmap
_sourceX2_
	the abscissa of the lower right point of the rectangle in the source AlphaBitmap
_sourceY2_
	the ordinate of the lower right point of the rectangle in the source AlphaBitmap
_width_
	the width of the rectangle to be copied
_height_
	the height of the rectangle to be copied

AlphaBitmap, _CPalphaBitmap.