On Tue, Jan 29, 2013 at 5:20 AM, Max <maxim.suraev@campus.tu-berlin.de> wrote:
29.01.2013 07:38, Axel Simon пишет:
> I'm sure that passing hbox twice here is the reason for the warning.
> The next-to-last parameter is the content of the pane!

So I can't use the same widget in both tab "header" and in right-click menu?
Where does this restriction comes from?

X11 can't render the same window (a widget is a window, just not a top level window) in two different places at the same time.  Likewise, the same window cannot have two parent windows at the same time.

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