#ifndef FXLINEEDITFOCUS_H#define FXLINEEDITFOCUS_H#include <QLineEdit>class QLineEditFocus : public QLineEdit // inherit QLineEdit{    Q_OBJECTpublic:    QLineEditFocus(QWidget *parent) : QLineEdit(parent) { };signals:    void infocus();    void outfocus();    void clicked();protected://    void mouseReleaseEvent(QMouseEvent *) { emit clicked(); void    mousePressEvent ( QMouseEvent * event ) //	void mousePressEvent ()(QMouseEvent *) 	{ 		//	QLineEdit::mousePressEvent (event); 		emit clicked(); 		return;	}	void focusInEvent ( QFocusEvent * event )	{ 		QLineEdit::focusInEvent (event); #if 0		if (this->text() == tr("please input impresa...") 			|| this->text() == tr("search friends...")			) 			this->setText("");#endif		emit infocus();	 }	void focusOutEvent ( QFocusEvent * event) 	{		QLineEdit::focusOutEvent (event); 		emit outfocus();	}};#endif