Qt problem, open a new window on mainwindow

wilson168

I am a newbie to Qt 4.7.Does anyone know how to open a new window on Qt::mainwindow (if the window is not shown)?

Here is my partial program, but it is wrong.

.....

connect(openWindowBar, SIGNAK(triggered()), this, SLOT(openNewWindow()));

....

void mainwindow:penNewWindow
{
Window *window=new Window();
window->show();
window->activateWindow();
}

Where, class "Window" is defined on other file "window.cpp".