Disable Close button (X) of a QDialog

[marcel]

I didn't manage to do it by using the Qt window flags, but it is possible using winapi:

#ifdef Q_WS_WIN
   CMenu* menu = this->GetSystemMenu(FALSE);
   menu->ModifyMenu(SC_CLOSE, MF_BYCOMMAND | MF_GRAYED );
#endif

#ifdef Q_WS_WIN
   CMenu* menu = this->GetSystemMenu(FALSE);
   menu->ModifyMenu(SC_CLOSE, MF_BYCOMMAND | MF_GRAYED );
#endif

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