Clickable QLabel

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h1. A 'Click'able QLabel

A "clicked" signal may sometimes be required from a label, but there is no "clicked" signal emitted by QLabel. You can work around this easily by making a QPushButton like a label by setting the 'flat' property.

However, if there are other properties of a QLabel object that you need, here is a code snippet for a custom QLabel which can emit a signal : 'clicked'. In other words, a Clickable QLabel!

Header

class ClickableLabel : public QLabel
{

Q_OBJECT

public:
 explicit ClickableLabel( const QString& text ="", QWidget * parent = 0 );
 ~ClickableLabel();

signals:
 void clicked();

protected:
 void mousePressEvent ( QMouseEvent * event ) ;
};

Source

ClickableLabel::ClickableLabel( const QString& text, QWidget * parent ) :
 QLabel(parent)

{
 this->setText(text);
 }

ClickableLabel::~ClickableLabel()
 {
 }

void ClickableLabel::mousePressEvent ( QMouseEvent * event )

{
 emit clicked();
 }

What we do here is simple : Catch the mouse press event on the label. Then emit 'clicked' signal. We could as well make the signal be emitted when mouse gets released. This is let to be a decision of the developer.