osf1 man page for xmupdatedisplay

XmUpdateDisplay(3X)													       XmUpdateDisplay(3X)

NAME
       XmUpdateDisplay - A function that processes all pending exposure events immediately

SYNOPSIS
       void XmUpdateDisplay (widget)
	       Widget widget;

DESCRIPTION
       XmUpdateDisplay	provides  the  application with a mechanism for forcing all pending exposure events to be removed from the input queue and
       processed immediately.  When a user selects a button within a MenuPane, the MenuPanes are unposted and then any activation callbacks regis-
       tered by the application are invoked.  If one of the callbacks performs a time-consuming action, the portion of the application window that
       was covered by the MenuPanes will not have been redrawn; normal exposure processing does not occur until all of	the  callbacks	have  been
       invoked.  If the application writer  suspects that a callback will take a long time, then the callback may choose to invoke XmUpdateDisplay
       before starting its time-consuming operation. This function is also useful any time a transient window, such as a dialog box, is  unposted;
       callbacks are invoked before normal exposure processing can occur.  Specifies any widget or gadget.

															       XmUpdateDisplay(3X)