[Qt-interest] QMainWindow and QDialog.

[Alessandro Portale]

Hi,

it seems that setLayout() has another effect in QMainWindow. Test: create an empty *centralWidget which takes your *mainLayout, and call QMainWindow::setCentralWidget() with it.
  http://doc.qtsoftware.com/latest/qmainwindow.html#setCentralWidget

- Alessandro

Shabd Swarup V wrote:
> Hi,
> 
> I have a class called Window which inherits from QMainWindow. Following 
> is its constructor:
> 
> Window::Window(QWidget *parent)
> : QMainWindow(parent)
> {
> ...
> mainLayout->addLayout(buttonsLayout, 2, 2, 1, 1);
> setLayout(mainLayout);
> 
> setWindowTitle(tr("Gambler"));
> resize(800, 700);
> }
> 
> This displays a completely blank window. Although, if I make Window 
> inherit from QDialog instead of QMainWindow, the widgets are displayed 
> perfectly fine.
> 
> Please suggest how I can make this work while keeping the base class as 
> QMainWindow.
> ...