Adding widgets using successor

[Guest]

I am trying to add widgets using class, which is successor of another class. Code:
@class1:class1(QMainWindow *parent):QMainWindow(parent){
QWidget *window = new QWidget();
//Adding widgets
}@
@class2:class2(class1 *parent):class1(parent) {
//Adding other widgets to the same QWidget
}@
@int main(int argc, char *argv[])
{
QApplication a(argc, argv);
class1 w;
if(w.getCmbName()=="foo") //reading current value of combobox. It was created in class1
class2 l;
w.show();
return a.exec();
}@
I have no errors but widgets from class2 are not appear. What am I doing wrong?