qt中label双击_qt关于QLabel控件的实现双击调用文件对话框

这里是手动添加以QLabel为基类c++类,重载mouseDoubleClickEvent()nlabel.h

#ifndef NLABEL_H

#define NLABEL_H

#include

class nLabel : public QLabel

{

public:

explicit nLabel(QWidget *parent = 0);

~nLabel();

public:

void mouseDoubleClickEvent(QMouseEvent *);

};

#endif // NLABEL_Hnlabel.cpp

#include "nlabel.h"

#include

nLabel::nLabel(QWidget *parent):

QLabel(parent)

{

}

nLabel::~nLabel()

{

}

void nLabel::mouseDoubleClickEvent(QMouseEvent *)

{

QStringList fileNameList;

QString fileName0;

QFileDialog* fd &#