双击时不运行单击事件——加延时判断

思路很简单，就是加一个延时，判断在特定时间内是否有第二个鼠标事件

//tqt.h
#ifndef TQT_H_
#define TQT_H_

#include <QtGui>
#include <QtCore>

class ClickedLabel : public QLabel
{
    Q_OBJECT
private:
    int press;
    //QTimer *timer;
protected:
    void mousePressEvent(QMouseEvent *event);
public:
    ClickedLabel(QLabel *parent = 0);
    ~ClickedLabel();
    private slots:
        void SingleClicked();
};


#endif


#include "tqt.h"

ClickedLabel::ClickedLabel(QLabel *parent /* = 0 */)
: QLabel(parent)
{
    press = 0;
    setText("Please Click ME~~~");
    resize(200, 200);
}

ClickedLabel::~ClickedLabel()
{

}

void ClickedLabel::mousePressEvent(QMouseEvent *event)
{
    press++;
    if(1 == press)
        QTimer::singleShot(300, this, SLOT(SingleClicked()));
}

void ClickedLabel::SingleClicked()
{
    if(1 == press)
        QMessageBox::information(this, tr("OK"), tr("Signal Clicked"));
    else
        QMessageBox::information(this, tr("OK"), tr("Double Clicked"));
    press = 0;
}


//main.cpp
#include "tqt.h"

int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    ClickedLabel *label = new ClickedLabel;
    label->show();
    return app.exec();
}

http://blog.csdn.net/small_qch/article/details/6742011