Package: xfwm4
Version: 4.12.4-1
Severity: normal
Dear Maintainer,
in applications using the Tk toolkit each time a mouse button is pressed
additional Enter and Leave events are triggered for no apparent reason. A
minimal wish script that illustrates this:
#!/usr/bin/env wish
frame .f -bg yellow -width 400 -height 300
pack .f -fill both -expand 1
bind .f <Button-1> {puts "Button-1 event"}
bind .f <Enter> {puts "Enter event"}
bind .f <Leave> {puts "Leave event"}
I admit I am not really sure to which package this bug report should be
addressed.
These "bogus" Enter and Leave events do not occur with Gnome, KDE or Mate or
some older light-weight WMs like WindowMaker, FvWm or IceWm, so I believe it is
unlikely that it is a Tk bug. Otoh the same or similar behavior has also been
observed with Openbox/Lxde and awesome.
This behavior does still persist in the versions of Xfce/xfwm currently in
debian Sid (tested yesterday).
The bug was first reported on the tkinter-discuss mailing list and has been
discussed here:
https://mail.python.org/pipermail/tkinter-discuss/2019-May/004082.html
and on debian-user here:
https://lists.debian.org/debian-user/2019/05/msg00668.html
Best regards
Michael
-- System Information:
Debian Release: 9.9
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'proposed-updates'), (500,
'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-9-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8),
LANGUAGE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages xfwm4 depends on:
ii libc6 2.24-11+deb9u4
ii libcairo2 1.14.8-1
ii libdbus-glib-1-2 0.108-2
ii libgdk-pixbuf2.0-0 2.36.5-2+deb9u2
ii libglib2.0-0 2.50.3-2
ii libgtk2.0-0 2.24.31-2
ii libpango-1.0-0 1.40.5-1
ii libstartup-notification0 0.12-4+b2
ii libwnck22 2.30.7-5.1
ii libx11-6 2:1.6.4-3+deb9u1
ii libxcomposite1 1:0.4.4-2
ii libxdamage1 1:1.1.4-2+b3
ii libxext6 2:1.3.3-1+b2
ii libxfce4ui-1-0 4.12.1-2
ii libxfce4util7 4.12.1-3
ii libxfconf-0-2 4.12.1-1
ii libxfixes3 1:5.0.3-1
ii libxrandr2 2:1.5.1-1
ii libxrender1 1:0.9.10-1
Versions of packages xfwm4 recommends:
ii librsvg2-common 2.40.16-1+b1
Versions of packages xfwm4 suggests:
ii xfce4 4.12.3
ii xfwm4-themes 4.10.0-2
-- no debconf information
