Hi

I am trying to use modal (Qt::WindowModal) QDialog inside QMdiArea and it doesn't work.
Here is example code:
Qt Code: 
  1. #include <QApplication>
  2. #include <QtGui>
  3.  
  4. int main(int argc, char *argv[])
  5. {
  6. 	QApplication app(argc, argv);
  7. 	QMainWindow mainWin;
  8.  
  9. 	QMdiArea* area = new QMdiArea();
  10. 	mainWin.setCentralWidget(area);
  11.  
  12. 	//window 1
  13. 	QWidget* w = new QWidget();
  14. 	w->setWindowTitle("w");
  15.  
  16. 	QVBoxLayout* layout = new QVBoxLayout();
  17. 	layout->addWidget(new QLineEdit());
  18. 	layout->addWidget(new QTextEdit());
  19. 	layout->addWidget(new QPushButton("B1"));
  20. 	w->setLayout(layout);
  21.  
  22. 	area->addSubWindow(w);
  23.  
  24. 	//window 2
  25. 	QWidget* w2 = new QWidget();
  26. 	w2->setWindowTitle("w2");
  27.  
  28. 	QVBoxLayout* layout2 = new QVBoxLayout();
  29. 	layout2->addWidget(new QLineEdit());
  30. 	layout2->addWidget(new QTextEdit());
  31. 	layout2->addWidget(new QPushButton("B2"));
  32. 	w2->setLayout(layout2);
  33.  
  34. 	QMdiSubWindow* sw2 = area->addSubWindow(w2);
  35.  
  36. 	mainWin.show();
  37.  
  38. 	//dialog
  39. 	QDialog d(sw2);// block window 2
  40. 	d.setWindowTitle("d");
  41. 	d.setWindowModality(Qt::WindowModal);
  42.  
  43. 	QVBoxLayout* layout3 = new QVBoxLayout();
  44. 	layout3->addWidget(new QLineEdit());
  45. 	layout3->addWidget(new QLineEdit());
  46. 	layout3->addWidget(new QPushButton("B3"));
  47. 	d.setLayout(layout3);
  48.  
  49. 	area->addSubWindow(&d);
  50. 	d.exec();
  51.  
  52. 	return app.exec();
  53. }
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Dialog should block window 2, but it deasn't block anything. It looks like ordinary window.

What is the correct way to do this?

Thank you.