This method maps and sends the contents of an off-screen bitmap, starting at the specified coordinates, to the upper-left corner of a control.
HRESULT CommitFrom( long xSrc, long ySrc );
NOERROR indicates success. E_UNEXPECTED indicates that something unexpected happened.
The specified starting corner of the bitmap is mapped to the upper-left corner of the control. If the committed portion of the bitmap is smaller than the control, the remainder of the control is painted in a default color. If the committed portion of the bitmap is larger than the control, the bitmap is clipped on the right and bottom sides.
IASCanvas::ClipAndCommit, IASCanvas::CommitAt