MSScrollBitmapToShape X1.w,Y1.w,Width.w,Height.w,X2.w,Y2.w[,SourceBitmapNum.w[,CustomOffsets.l]];bm2shandst2ck

Does the same as MSScroll except that the source is a chunky Bitmap and the
destination is a chunky Shape. The Bitmap's graphic and stencil are copied to the
destination Shape's graphic and cookie, or the Bitmap's graphic is cut `behind'
the cookie-protected areas of the destination Shape's image.