Qt4 how to capture focus event on QLineEdit widget or others -

How can I capture a focus event in some widgets (for example, Clinadit) without creating a new widget?

More for help :)

One way to change a slot - focus (QWidget *, QWidget *) Sign in your main window with QApplication in your main function and connect to the Signal Focus Indicator (QWidget *, QWidget *). In Main.cpp

  QApplication a (argc, argv); Maine Window W; QObject :: connect (& amp; one, signal (by changing focus (QWidget *, QWidget *)), & amp; W, slot (Focused (QWidget *, QWidget *));         
 The main window CPO     
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