[Xcb] How to wake up the GUI thread in XCB?

[Uli Schlachter]

Hi,

Am 19.05.2015 um 12:51 schrieb Cosmin Apreutesei:
> My app is waiting on a thread to finish. When the thread finishes its
> thing, I want to update the GUI. The GUI thread is blocking in
> xcb_wait_for_event().

Qt has the same problem and it solves it by causing an event to be generated
(function QXcbConnection::sendConnectionEvent):

https://github.com/qtproject/qtbase/blob/dev/src/plugins/platforms/xcb/qxcbconnection.cpp#L1268

Cheers,
Uli
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