adam@npois.UUCP (Adam V. Reed) (05/31/85)
If you use the wrastop(3T) raster operations facility, you will note that the first argument to wrastop is called w, the usual abbreviation for window identifier (as returned by wgetsel()). It is not otherwise documented. In trying to use it, I found out that using a window identifier as the first argument to wrastop() can lead to a dropped core or worse. I determined, by experimentation, that the first argument to wrastop() should be a FILE DESCRIPTOR, and NOT the WINDOW IDENTIFIER the manual page would lead you to expect. Adam Reed ihnp4!npois!adam