My Application has a QTabWidget as the central widget. I want to implement dock/undock functionality for its tabs. Each tab has a button and a local variable to save its state (dock or undock).

Qt Code: 
  1. ....
  2. bool isDocked = true;
  3. ....
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inside button click event

Qt Code: 
  1. if (isDocked)
  2. {
  3.     ....
  4.     removePage(tab);
  5.     tab->reparent(0, QPoint(0,0), true);
  6.     isDocked = false;
  7. }
  8. else
  9. {
  10.     ....
  11.     addTab(tab, name);
  12.     isDocked = true;
  13. }
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This works fine. My problem is the close event. If the tab is Undocked, it appears as a top level widget(with min/max/close buttons). If the user clicked the close button tab should be docked. I have reimplemented tab's closeEvent to get this functionality. closeEvent implementation is same as the button clicked implementation. but it works first time only. after that if i press the close button it does nothing. What can be the problem ? I am using Qt 3. thanks.