How to open a new window from the main window in Qt?

Question

I\'m new to qt programming and would like to know how to open a new window from the main window with the mainwindow disappearing? Is there any source code I can have a look

Answer 1

From a slot in your MainWindow call this code :

QWidget *wdg = new QWidget;
wdg->show();
hide();//this will disappear main window