mouseevent.cpp

QT4下面的鼠标事件

#include "mouseevent.h"

MouseEvent::MouseEvent( )
    : QMainWindow()
{  
    setWindowTitle(tr("Get Mouse Event"));
    
    labelStatus = new QLabel();
    labelStatus->setText(tr("Mouse Position:"));   
    labelStatus -> setFixedWidth (100);

    labelMousePos = new QLabel();
    labelMousePos->setText(tr(""));   
    labelMousePos -> setFixedWidth (100);
    
    statusBar()->addPermanentWidget(labelStatus);
    statusBar()->addPermanentWidget(labelMousePos);

    this->setMouseTracking ( true); 
}

MouseEvent::~MouseEvent()
{

}

void MouseEvent::mouseMoveEvent ( QMouseEvent * e )
{
    labelMousePos ->setText("("+QString::number(e->x())+","+QString::number(e->y())+")");
}

void MouseEvent::mousePressEvent ( QMouseEvent * e )
{
    QString str="("+QString::number(e->x())+","+QString::number(e->y())+")";
    if(e->button()==Qt::LeftButton)
    {
    	statusBar()->showMessage (tr("Mouse Left Button Pressed:")+str);
    }
    else if(e->button()==Qt::RightButton)
    {
    	statusBar()->showMessage (tr("Mouse Right Button Pressed:")+str);
    }    
    else if(e->button()==Qt::MidButton)
    {
    	statusBar()->showMessage (tr("Mouse Middle Button Pressed:")+str);
    }    

}

void MouseEvent::mouseDoubleClickEvent( QMouseEvent * e )
{
    QString str="("+QString::number(e->x())+","+QString::number(e->y())+")";
    if(e->button()==Qt::LeftButton)
    {
    	statusBar()->showMessage (tr("Mouse Left Button Double Clicked:")+str);
    }
    else if(e->button()==Qt::RightButton)
    {
    	statusBar()->showMessage (tr("Mouse Right Button Double Clicked:")+str);
    }    
    else if(e->button()==Qt::MidButton)
    {
    	statusBar()->showMessage (tr("Mouse Middle Button Double Clicked:")+str);
    }    	
}

void MouseEvent::mouseReleaseEvent ( QMouseEvent * e )
{
    QString str="("+QString::number(e->x())+","+QString::number(e->y())+")";
    statusBar()->showMessage (tr("Mouser Released:")+str,3000);
}