Path: utzoo!attcan!uunet!cs.utexas.edu!sun-barr!olivea!mintaka!bloom-beacon!dprg-330.GOVt.shearson.COM!fgreco
From: fgreco@dprg-330.GOVt.shearson.COM (Frank Greco)
Newsgroups: comp.windows.x
Subject: Re: Xview questions:
Message-ID: <9010241329.AA02329@islanders.>
Date: 24 Oct 90 13:29:29 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 47

> 
> 1) I have two buttons and a text item on a main window panel.  Next to these
> are three canvases.  When I pull down my main menu it has the 'standard' mac
> types of file operations, open, save, run, etc.  When I launch the
> running of the computational routines which write XImages into the canvases
> I have a problem with the items in the panel.  That is, the panel does no
> repaint itself during the time the computations are running.  Is there
> a way to force this?

	Break up your repainting so that after a bit of drawing, you call
	notify_dispatch() to process incoming events (ie, WIN_REPAINT).
	Look at the example in Dan Heller's XVPM (2nd ed) 19.10.2 Explicit
	Dispatching for a start in the right direction.

> 2) I still don't understand why I have problems with the panels and
> canvases filling up the screen.  I have a frame color set by the window
> manager.  When I create panels they have this color - this is what I want.
> However, my canvases and panels are not the same color.  As a result there
> are little white regions of the window.  This gets much more noticeable if
> I resize the window.  Can I fill these white regions?  When I 
> am all done creating all the items, canvases, and panels for the main frame
> I size everything with window_fit and it looks OK with the exception of the
> small white panel slivers that 'fill in' the frame.  I've tried reading the
> frame rect and using this to resize the panel and have hasd no luck yet.

	I haven't seen this behavior.  Although I've seen some 
	bugs with TEXTSW's bringing along part of the frame when they scroll. 

> 3) I've found that hitting buttons and showing cmd_frames and such
> sometimes cause small squares to appear in the xterm from which the
> application was started.  They appear at random places and at random
> times in the execution of operating the app.  Is this a bug?  My app
> has absolutely no prinf statements which could be spitting stuff to the
> xterm.  I am running Openlook 2.0 as the WM and XView 2.0.  Both were
> shipped with my IPC and already installed on the HD.
> 
	Yes, I've seen this one bug (the "Xacne" effect...;->).  
	It looks like someone (OW server?) is getting confused on 
	where to redraw the active text cursor.
	This doesn't happen if a vanilla MIT X server (with olwm) is used.

> I'm still learning - but it basically works.......
> 
	Pretty simple isn't it?


	Frank G.