Xref: utzoo comp.windows.news:2565 comp.windows.open-look:1157
Newsgroups: comp.windows.news,comp.windows.open-look
Path: utzoo!utgpu!watserv1!watcgl!mud.waterloo.edu!bmacinty
From: bmacinty@mud.waterloo.edu (Blair MacIntyre)
Subject: Getting focus notification in TNT2.0 Beta
Message-ID: <1991Apr9.062834.19405@watcgl.waterloo.edu>
Sender: news@watcgl.waterloo.edu (USENET News System)
Organization: Computer Graphics Laboratory, University of Waterloo, Ontario, Canada
Date: Tue, 9 Apr 1991 06:28:34 GMT
Lines: 36

I'm writing a window class (subclass of ClassBaseWindow) and I want
to be notified when the window gets/loses the focus.

I've been trying various things for most of the evening (and night)
and cannot seem to get it to work.

From poking around in the classes, I came to the conclusion that 
what I want to do is activate FocusNoticeService (ClassBag) and
override HandleFocusNotice in my class.  I should then get events
of type AcceptFocus, RestoreFocus and LoseFocus. 

So, I tried setting a Class variable FocusNoticeable? to true.
Nothing.

I tried calling setfocusnoticeable with a true parameter.
Nothing.

I know that I'm activating the window (I'm testing things with a 
simple program based on the manual.colors demo) so active in 
ClassBag should be being called, which means the Focus should be
being activated.

The HandleFocusNotice function is just not being called.  Period.

Questions:  am I missing something obvious?  I managed to get
	TrackCrossing events (EnterEvent, ExitEvent) using a similar
	approach.

	    is this the right way to get focus events?  Is there
	another way?  Is there any way?

Help!
-- 
Blair MacIntyre, Computer Graphics Lab
Dept. of Computer Science, University of Waterloo, Waterloo, ON, Canada, N2L3G1
{bmacintyre@{watcgl|violet|watdragon}}.{waterloo.edu|uwaterloo.ca}