Codejock Developer Community : How to force redraw on PropertyGrid? http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 15 May 2026 06:35:04 +0000 Tue, 08 Jun 2004 11:17:28 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=815 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[How to force redraw on PropertyGrid? : For performance reasons, I want...]]> http://forum.codejock.com/forum_posts.asp?TID=815&PID=2160&title=how-to-force-redraw-on-propertygrid#2160 Author: Boyd
Subject: 815
Posted: 08 June 2004 at 11:17am

For performance reasons, I want to prevent the PropertyGrid from redrawing while I clear categories and items.  The two methods I'm aware of in Visual Basic to do this are the 'LockWindowUpdate' function and the 'WM_SETREDRAW' message.

'WM_SETREDRAW' is the preferred method since 'LockWindowUpdate' only works on one control at a time.  When I execute the following command:

SendMessage PropertyGrid.hWnd, WM_SETREDRAW, 0, 0

The control stops redrawing (as expected).  When I execute the following command:

SendMessage PropertyGrid.hWnd, WM_SETREDRAW, 1, 0

The redraw is turned back on BUT only for future drawing.  It does not draw that last changes before redraw was turned back on.  Is there a way to force the PropertyGrid to redraw after I turn drawing back on?  I've tried the following:

RedrawWindow PropertyGrid.hWnd, ByVal 0&, ByVal 0&, RDW_INVALIDATE

But it the PropertyGrid still didn't redraw.  Any suggestions are greatly appreciated on how to control the Redraw of the PropertyGrid.  Thanks in advance!

]]> Tue, 08 Jun 2004 11:17:28 +0000 http://forum.codejock.com/forum_posts.asp?TID=815&PID=2160&title=how-to-force-redraw-on-propertygrid#2160