how to immediately show / update a window without returning to event loop?
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on windows, the moment i call this:
i_qWindP->show();the window shows. on mac it doesn't show. is there some "idle" call i can make to allow the OS some CPU time to get the window on screen?
then, say i update a control in that window (like, a progress bar), how do i get that to flush immediately? this is during startup so we're not at the event loop just yet...
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Okay it seems the secret was calling QApplication::processEvents();
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okay i'm calling repaint() on the QWindow widget but it doesn't actually draw when i step over that call, do i need to somehow yield some time to the event handler for that to actually be serviced?
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also, on the mac, the window isn't even being shown. i call show and i get nothing.
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This post is deleted!
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Hi,
What do you do in that QWindow ?
Since it's a QWindow, you are likely doing OpenGL therefore, did you initialise everything properly ?
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Okay it seems the secret was calling QApplication::processEvents();
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@davecotter said in how to immediately show / update a window without returning to event loop?:
okay i'm calling repaint() on the QWindow widget but it doesn't actually draw when i step over that call, do i need to somehow yield some time to the event handler for that to actually be serviced?
That QWindow was then misleading ;-)
As for your solution, you are in fact forcing a round of the event loop.
