<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.28.3"> </HEAD> <BODY> Hi,   In most of the reference DDX driver implementations, the Pixmap procedures (CreatePixmap, etc) are being implemented by the driver and also are getting populated in the ScreenRec structure by the driver. But none of the Window procedures (like CreateWindow, DestroyWindow ...) are being implemented by the drivers. Can someone throw a hint as to why the Window procedures of ScreenRec are not being implemented by the driver whereas the Pixmap procedures are? (I checked with a couple of reference implementations and this is a common observation.) Thanks -K </BODY> </HTML>