Scott Sneddon wrote:
Do I need to call snapshot in the event loop in order to get the
screen to
render? and if so, what event should I look for to guarantee that
the event
is triggered in the Xvfb environment (no mouseclicks).
You are calling snapshot() before the main loop had a chance to do any
work. You can use an idle callback to take the snapshot when gtk+
has finished
drawing all widgets:
Glib::Idle->add (sub { snapshot(); return Glib::SOURCE_REMOVE; });
However, even with this there is still a race condition regarding
the window
manager borders: the window manager might not have drawn the borders
yet when
the callback is triggered. But apparently you don't use a window
manager, so
maybe this is irrelevant in your case.
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