Moved hrgnUpdate from client to window coordinates, made nonclient
painting depend on the update region, reworked SetWindowPos() and
RedrawWindow() to speed up update region calculation, made -desktop
work properly, added WM_CANCELMODE here and there, fixed several
window activation bugs that crept in since the last time.

diff --git a/windows/ttydrv/wnd.c b/windows/ttydrv/wnd.c
index da2b184..7085ac9 100644
--- a/windows/ttydrv/wnd.c
+++ b/windows/ttydrv/wnd.c
@@ -117,6 +117,14 @@
 }
 
 /***********************************************************************
+ *              TTYDRV_WND_SetHostAttr
+ */
+BOOL TTYDRV_WND_SetHostAttr(WND *wndPtr, INT attr, INT value)
+{
+    return FALSE;
+}
+
+/***********************************************************************
  *		TTYDRV_WND_IsSelfClipping
  */
 BOOL TTYDRV_WND_IsSelfClipping(WND *wndPtr)