How to postpone a signal until present form is closed ?

[FelixB]

I don't get the connection between both dialogs... if you want to close the first after user pressed on a button: connect thi button with "close"-slot. When you want to open a second dialog - open it after exec() has returned.

Dialog dlg;
dlg.exec();
Dialog dlg2;
dlg2.exec();

Dialog dlg;
dlg.exec();
Dialog dlg2;
dlg2.exec();

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