<![CDATA[modal dialog called from QAction does not close until action terminates]]>Under Qt5.9:

A QAction A is connected to a MainWindow member function f that executes a QFileDialog D, then takes quite a while to load the selected files. Against my intentions, the file dialog remains open until f terminates. Calling D.close() does not help. Letting D go out of scope does not help.

My best hypothesis right now is that the unexpected behavior of D in f has to do with f being called from a QAction. Is this plausible, or even a known problem?

]]>https://forum.qt.io/topic/87309/modal-dialog-called-from-qaction-does-not-close-until-action-terminatesRSS for NodeSat, 02 May 2026 11:43:12 GMTTue, 30 Jan 2018 14:27:36 GMT60<![CDATA[Reply to modal dialog called from QAction does not close until action terminates on Tue, 30 Jan 2018 15:05:37 GMT]]>What helps is mainwin->repaint().

]]>https://forum.qt.io/post/439336https://forum.qt.io/post/439336Tue, 30 Jan 2018 15:05:37 GMT<![CDATA[Reply to modal dialog called from QAction does not close until action terminates on Tue, 30 Jan 2018 15:03:18 GMT]]>can you please show your code?

]]>https://forum.qt.io/post/439334https://forum.qt.io/post/439334Tue, 30 Jan 2018 15:03:18 GMT<![CDATA[Reply to modal dialog called from QAction does not close until action terminates on Tue, 30 Jan 2018 14:55:45 GMT]]>

QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);

has no effect, the problem persists.

Anyway, I was wrong about QAction. The problem also persists if I directly call mainwin->f.

]]>https://forum.qt.io/post/439332https://forum.qt.io/post/439332Tue, 30 Jan 2018 14:55:45 GMT<![CDATA[Reply to modal dialog called from QAction does not close until action terminates on Tue, 30 Jan 2018 14:38:05 GMT]]>Add QApplication::processEvents(QEventLoop::ExcludeUserInputEvents); after D.close()

]]>https://forum.qt.io/post/439331https://forum.qt.io/post/439331Tue, 30 Jan 2018 14:38:05 GMT