* XplatUIX11.cs: This is perhaps a dangerous change, but it seems

	* XplatUIX11.cs: This is perhaps a dangerous change, but it seems
	to have no evil effects.

	- Stop selecting StructureNotifyMask on non-toplevel windows.

	  The only way children should be resized is by using the SWF api,
	  and we already send WM_WINDOWPOSCHANGED messages in those cases.
	  Toplevel windows can be interacted with via the window manager,
	  and so we keep the input mask there.

	  The other event StructureNotifyMask gives us (that we care
	  about) is DestroyNotify.  The code is already structured such
	  that it assumes we won't be getting a DestroyNotify event for
	  the window we pass to XDestroyWindow (which is what
	  StructureNotifyMask is supposed to guarantee.)  So, that code
	  shouldn't be affected by this either.

	- Stop selecting VisibilityChangeMask altogether.

	  We weren't doing anything with the resulting events anyway.

	This vastly reduces the number of X requests and events we see
	when resizing/laying out a large ui.

2006-10-06  Chris Toshok  <toshok@ximian.com>

svn path=/trunk/mcs/; revision=66380