1 #ifndef HELPLABEL_H

     2 #define HELPLABEL_H

     3 

     4 #include <QLabel>

     5 #include <QMenu>

     6 

     7 class HelpLabel : public QLabel

     8 {

     9     Q_OBJECT

    10   public:

    11     HelpLabel(const QString &text) : QLabel(text) 

    12     { setContextMenuPolicy(Qt::CustomContextMenu); 

    13       connect(this,SIGNAL(customContextMenuRequested(const QPoint&)),

    14               this,SLOT(showMenu(const QPoint&)));

    15     }

    16   signals:

    17     void enter();

    18     void reset();

    19   private slots:

    20     void showMenu(const QPoint &p)

    21     {

    22       QMenu menu(this);

    23       QAction *a = menu.addAction(tr("Reset to default"));

    24       if (menu.exec(mapToGlobal(p))==a)

    25       {

    26         reset();

    27       }

    28     }

    29   protected:

    30     void enterEvent( QEvent * event ) { enter(); QLabel::enterEvent(event); }

    31 };

    32 

    33 #endif