RE: FW: Test77 multiwindow mouse weirdness

["Piers Haken" <piersh at friskit dot com>]

Resend....

> -----Original Message-----
> From: Piers Haken 
> Sent: Thursday, February 13, 2003 1:46 AM
> To: 'cygwin-xfree@cygwin.com'
> Subject: RE: FW: Test77 multiwindow mouse weirdness
> 
> 
> Can you drag a multiwindow so half of it show on one desktop 
> and the other hald on another?
> 
> This probably should be a somewhat lofty goal...
> 
> Piers.
> 
> > -----Original Message-----
> > From: Nick Crabtree [mailto:nickc@scopic.com]
> > Sent: Thursday, February 13, 2003 12:21 AM
> > To: cygwin-xfree@cygwin.com
> > Subject: RE: FW: Test77 multiwindow mouse weirdness
> > 
> > 
> > Harold,
> > 
> > The assumption that the screen origin is 0,0 is one of the
> > things I had to fix for the multiple monitors patch. In 
> > general SM_XSCREEN and SM_YSCREEN should _always_ be used to 
> > discover the origin (or more generally SM_XVIRTUALSCREEN 
> > ...). In most configurations this will indeed return 0,0 but 
> > it should not be assumed that this is the case.
> > 
> > I had also noticed this problem with multiwindow mode on my
> > twin monitor set-up. If I set my left screen to be the 
> > primary then the origin is 0,0 and multiwindow mode stretches 
> > across both monitors. If the right screen is primary then the 
> > origin is -1200,0 and mutiwindow mode only works on the 
> right monitor.
> > 
> > I was going to have a look at this in a few weeks when I
> > should have some spare time.
> > 
> > Nick
> > 
> > -----Original Message-----
> > From: cygwin-xfree-owner@cygwin.com
> > [mailto:cygwin-xfree-owner@cygwin.com] On Behalf Of Harold L Hunt II
> > Sent: 12 February 2003 22:14
> > To: cygwin-xfree@cygwin.com
> > Subject: Re: FW: Test77 multiwindow mouse weirdness
> > 
> > 
> > Piers,
> > 
> > Yes, that is strange.  I think the problem is that, as you said, the
> > multiwindow mode is assuming that the screen is based at 0, 
> 0.  That 
> > isn't a problem for the non-multiwindow mode, but there was 
> obviously 
> > some sort of oversight in the multiwindow mode that caused 
> > this problem 
> > to show up.  I may look into it eventually, but if you have any 
> > inclination to peek at the source yourself (it is accessible 
> > via cvsweb 
> > and well commented) then I would appreciate it if you could try to 
> > locate the problem for me.
> > 
> > Harold
> > 
> > Harold L Hunt II wrote:
> > > Here is a message from Piers Haken reporting a problem with 
> > > mutliwindow mode.  His emails get bounced because 
> Exchange insists 
> > > on
> > munging his
> > > email.
> > > 
> > > Harold
> > > 
> > >  > -----Original Message-----
> > >  > From: Piers Haken
> > >  > Sent: Tuesday, February 11, 2003 11:22 PM
> > >  > To: 'cygwin-xfree@cygwin.com'
> > >  > Subject: Test77 multiwindow mouse weirdness
> > >  >
> > >  >
> > >  > I'm seeing some weirdness with the mouse cursor in Test77's 
> > > multiwindow  > mode.  >  > Note: I have my windows 
> taskbar attached 
> > > to the left-hand edge of
> > the
> > >  > screen instead of the bottom.
> > >  >
> > >  > Here's how to see what I'm seeing:
> > >  > 1) install test77
> > >  > 2) unlock the taskbar.
> > >  > 3) dock the taskbar to the left-hand side of the 
> screen  > 4) run 
> > > 'XWin-Test77 -multiwindow'  > 5) open an xterm
> > >  > 6) look at the position of the xterm window.
> > >  > 7) now click on the 'Cygwin/XFree86 rl' window so the root is
> > visible.
> > >  >         Notice how the position of the xterm window is 
> different
> > >  > depending on whether or not the root window is shown.
> > When the root
> > > > window is shown the xterm jumps to the right exactly by 
> the width
> > of the
> > >  > taskbar.
> > >  >
> > >  > 8) while the root window is on top, move the mouse around.
> > >  >         Notice that the mouse cursor occasionally jumps to the
> > right,
> > >  > again by the same amount as the width of the taskbar.
> > >  >
> > >  > 9) show both the root window AND the xterm, so the multiwindow
> > xterm
> > >  > with the windows decorations is on top of the root window.  >
> > >  >         Notice that the two versions of the xterm window do not
> > line up.
> > >  >
> > >  > I know this isn't a very common or very severe bug but
> > it does seem
> > to
> > >  > indicate an underlying problem in the calculation of the
> > desktop  >
> > > bounding rectangle. Perhaps you're assuming, incorrectly in
> > general,
> > >  > that the desktop starts at (0,0)?
> > >  >
> > >  > Piers.
> > >  >
> > > 
> > 
> > 
> > 
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