QT dialog close and delete

Question

I have a MainWindow and Type class.

A button in the MainWindow sends a signal to a slot with this code:

dialog = new QDialog(this);

Ui_type typeui;
         


        

Answer 1

You can set Qt::WA_DeleteOnClose attribute on your dialog. This will ensure that the dialog gets deleted whenever it is closed.

Then call close() method in the dialog when your button is clicked.

dialog = new QDialog(this);

Ui_type typeui;
typeui.setupUi(dialog);

dialog->setAttribute(Qt::WA_DeleteOnClose);

dialog->show();

Refer to the documentation for details :

QWidget::setAttribute ( Qt::WidgetAttribute attribute, bool on = true )

Qt::WidgetAttribute