Qt apps are not required to have any Close button as part of the dialog UI, even the standard builtin ones like Print Preview (http://doc.qt.io/qt-5/qprintpreviewdialog.html).
We need a way to close such a window (dialog), without resorting to fixing hundreds of apps themselves.
Qt apps are not required to have any Close button as part of the dialog UI, even the standard builtin ones like Print Preview (http:// doc.qt. io/qt-5/ qprintpreviewdi alog.html).
We need a way to close such a window (dialog), without resorting to fixing hundreds of apps themselves.