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

Question

I am new to qt programming and would like to know how to open a new window from the main window with mainwindow disappearing? Is there any source code that I can take a look at?

Answer 1

From the slot in MainWindow, call this code:

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

Answer 2

In mainwindow.h

Declare an nw object of class NewWindow below

 NewWindow *nw = new NewWindow(); 

(Suppose we open NewWindow as soon as button 1 is pressed on MainWindow)

Then in the on_pushButton_1_clicked() slot of the MainWindow class:

 void MainWindow::on_pushButton_1_clicked(){ nw->show(); this->hide(); } 

Answer 3

try this instead

 this-> hide();