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 at?

Answer 1

From a slot in your MainWindow call this code :

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

Answer 2

In mainwindow.h

Declare nw object of class NewWindow as below

NewWindow *nw = new NewWindow();

(Lets say we will open NewWindow, once the button1 is clicked on MainWindow)

Then in on_pushButton_1_clicked() slot of class MainWindow:

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

Answer 3

try this instead

this-> hide();