* Form.cs (Close): if the form is modal, don't Dispose of it, only

	* Form.cs (Close): if the form is modal, don't Dispose of it, only
	Hide it.
	(WndProc): don't Dispose after handling the WM_CLOSE message.

	* Application.cs (RunLoop): toplevels is a list of Forms, so treat
	them as such, instead of using casts from Control to Form.  Also,
	don't Dispose of the modal dialog when we fall out of the loop -
	Close() it instead.

	fixes bug #79813.

2006-11-03  Chris Toshok  <toshok@ximian.com>

svn path=/trunk/mcs/; revision=67327