multiwindow support for _NET_WM_STATE_SKIP_TASKBAR

[Jon TURNEY]

Yaakov (Cygwin Ports) wrote:
> Jon,
> 
> Following up on our discussion about multiwindow not honouring
> _NET_WM_STATE_SKIP_TASKBAR.  The attached patch was what I had in mind
> but it has no effect.  I'm posting this now to at least start the
> discussion.
> 
> You may wish to refer to the FD.o EWMH specs:
> 
> http://standards.freedesktop.org/wm-spec/wm-spec-1.4.html

Yaakov,

Here's a slightly improved version of that patch, and working version of the 
small testcase you pointed out to me.

Sadly, doesn't work quite as well as it might: to remove a window from the 
taskbar, not only do you have to remove the WS_EX_APPWINDOW style, but also 
add the WS_EX_TOOLWINDOW style, which changes the size of the title bar etc.

So this might look ok for some title-bar less dialog-style windows, but looks 
a bit odd otherwise.

Anyhow, try it out and see what you think.
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