Version:            (using KDE 3.5.9)
Installed from:    Ubuntu Packages
OS:                Linux

Hi,

I filed this as Wine bug 12605. [1]

I have a simple Windows program that toggles to full screen and back. [2] When I run this with a recent version of Wine, i.e. Wine 0.9.61, toggling full screen and back results in a missing minimize button in KDE 3.5.x. I've tried with KDE 3.5.2 and 3.5.9. With KDE 4.0, it works fine.

The code that sets the WM states in Wine are in dlls/winex11.drv/window.c in update_net_wm_states(). If one enable WINEDEBUG=+x11drv, part of the output is as follows:

- click the button to go full screen
setting wm state 0 for window 0x10024/3c00005 to 1 prev 0
setting wm state 2 for window 0x10024/3c00005 to 0 prev 1
setting wm state 3 for window 0x10024/3c00005 to 1 prev 0
setting wm state 4 for window 0x10024/3c00005 to 1 prev 0

- click the button to return from full screen
setting wm state 0 for window 0x10024/3c00005 to 0 prev 1
setting wm state 2 for window 0x10024/3c00005 to 1 prev 0
setting wm state 3 for window 0x10024/3c00005 to 0 prev 1
setting wm state 4 for window 0x10024/3c00005 to 0 prev 1

where the wm states are:
0: XATOM__NET_WM_STATE_FULLSCREEN,
1: XATOM__NET_WM_STATE_ABOVE,
2: XATOM__NET_WM_STATE_MAXIMIZED_VERT,
3: XATOM__NET_WM_STATE_SKIP_PAGER,
4: XATOM__NET_WM_STATE_SKIP_TASKBAR

I experimented with the code and it looks as though toggling SKIP_TASKBAR is the reason for the minimizing button going missing.

[1] http://bugs.winehq.org/show_bug.cgi?id=12605
[2] http://bugs.winehq.org/attachment.cgi?id=12220