> Chris Siebenmann <c...@cs.toronto.edu> writes:
>
> > Corebird is a Linux/GTK Twitter client:
> > https://corebird.baedert.org/
> >
> > In attempting to use the current version on Fedora 25, I have uncovered
> > a weird oddity where I cannot click links with the left mouse button when
> > using my FVWM configuration. Corebird recognizes that I have clicked and
> > will do things like select text, but does not see it as quite whatever
> > is needed to make it see things as a click that activates the link. A long
> > discussion of what I can and can't do is in my initial Fedora bug report:
> > https://bugzilla.redhat.com/show_bug.cgi?id=1425611
>
> My guess, bad hardware.
>
> When you click a mouse it should generate 2 X11 events:
>
> ButtonPress
> ButtonRelease
I've just used xev to confirm that I see ButtonPress and ButtonRelease
events. However, what I have discovered is that I see additional events
with my FVWM configuration. Immediately before a ButtonPress, I also get:
ButtonRelease event, serial 33, synthetic NO, window 0x600001,
root 0x26d, subw 0x0, time 672491078, (62,72), root:(856,280),
state 0x100, button 1, same_screen YES
LeaveNotify event, serial 33, synthetic NO, window 0x600001,
root 0x26d, subw 0x0, time 672491437, (62,72), root:(856,280),
mode NotifyGrab, detail NotifyAncestor, same_screen YES,
focus YES, state 256
EnterNotify event, serial 33, synthetic NO, window 0x600001,
root 0x26d, subw 0x0, time 672491437, (62,72), root:(856,280),
mode NotifyUngrab, detail NotifyAncestor, same_screen YES,
focus YES, state 256
KeymapNotify event, serial 33, synthetic NO, window 0x0,
keys: 109 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ButtonPress event, serial 33, synthetic NO, window 0x600001,
root 0x26d, subw 0x0, time 672491437, (62,72), root:(856,280),
state 0x0, button 1, same_screen YES
(This is in xev, clicking and releasing and re-clicking and re-releasing,
with no mouse movement at all.)
Doing the same xev test with 'fvwm -f /dev/null' sees only the expected
ButtonPress/ButtonRelease events.
> This symptom in the bug report:
>
> I tried keynav and discovered some quite interesting results. First, the
> keynav worked as you described. And second, what I hadn't noticed
> before, is that when I click on a link (or try to), what happens
> visually is that a dotted gray box appears around the link, just as in
> keynav, and if I hit return the link is activated.
>
> makes me suspicious that you are only seeing one of the events
> or some other event oddity.
>
> In general Fvwm does not interfere with mouse clicks unless you tell
> it to. If you still think Fvwm is involved remove your mouse 0
> and 1 bindings and test. You have 12 of them.
If I comment out all Mouse 0 and 1 bindings from my fvwmrc-2.5
file (from the URL) *except* either:
Mouse 1 A MS Iconify
or
Mouse 1 A M Raise
then I see the extra LeaveNotify / EnterNotify / KeymapNotify sequence
in xev and clicking on links no longer works in Corebird.
If I comment out those two bindings but leave everything else commented
in, I don't see any problems.
Unfortunately I use Shift-Meta-1 to iconify very frequently, so not having
this binding would be very painful. It also doesn't cause problems in
other applications; everything else I use (Firefox, Liferea, Choqok,
and basically every other GUI program I can think of) is fine with
this binding.
- cks
