Method Window

example/qt/qt3/hello/main.cpp:14–23

{
public:
    Window()
    {
        setCaption("QCanvas test");
        QVBox* vb = new QVBox(this);
        setCentralWidget(vb);   
    
        Canvas* c = new Canvas(vb); 
        QPushButton* b = new QPushButton("Change color", vb);
        connect(b, SIGNAL(clicked()), c, SLOT(change_color())); 
    }        
};

int main(int argc, char **argv)