![]() Dialogs can be application modal (the default) or window modal. Dialogs that are used to request a file name from the user or that are used to set application preferences are usually modal. Modal DialogsĪ modal dialog is a dialog that blocks input to other visible windows in the same application. To ensure that child windows of the dialog stay on top of the dialog, make the child windows modal as well. This also applies for child windows of the dialog itself. To ensure that the dialog is always on top, make the dialog modal. Note: The parent relationship of the dialog does not imply that the dialog will always be stacked on top of the parent window. This function allows you to explicitly set the window flags of the reparented widget using the overloaded function will clear the window flags specifying the window-system properties for the widget (in particular it will reset the Qt::Dialog flag). Use the overload of the QWidget::setParent() function to change the ownership of a QDialog widget. ![]() It will also share the parent's taskbar entry. A dialog is always a top-level widget, but if it has a parent, its default location is centered on top of the parent's top-level widget (if it is not top-level itself). Note that QDialog (and any other widget that has type Qt::Dialog) uses the parent widget slightly differently from other classes in Qt. QDialogs can also have a QSizeGrip in their lower-right corner, using setSizeGripEnabled(). QDialogs can provide a return value, and they can have default buttons. A dialog window is a top-level window mostly used for short-term tasks and brief communications with the user.
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