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[jacek]

QT 4.1

Then look for "C++ GUI Programming with Qt4". The Qt3 version of this book is available for download, but I'm not sure if you can download the Qt4 edition too.

This shows the form but immediately gets closed

QWidget::show() is a non-blocking call and because you create frm2 on the stack it gets destroyed as soon as it goes out of scope.

http://doc.trolltech.com/4.1/qdialog.html#return