QMouseevent

Code:

---

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
 
 
 
}
 
MainWindow::~MainWindow()
{
    delete ui;
}
class Mouse : public QObject
{
    Q_OBJECT
 
 
protected:
    bool eventFilter(QObject *obj, QEvent *event);
};
Mouse *mouse = new Mouse();
bool Mouse::eventFilter(QObject *obj, QEvent *event)
{
    if (event->type() == QEvent::MouseButtonPress) {
 
        return true;
    } else {
        // standard event processing
        return QObject::eventFilter(obj, event);
    }
}
QLabel*label=new QLabel();
label->installEventFilter(mouse);

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I wanted to install event filter in Qlabel of my ui application ....I have posted the code above but I am having problem with it...I might be declaring the class in wrong section please help me how to install eventfilter in qlabel for mouseevent handling

Code related to eventFilter looks ok, what are you doing with label after this ? Maybe you just display wrong label in ui. Another thing is that I'm not really sure how your code looks like, is this all one header ? If yes then I'd suggest separate the implementation to .cpp files.
Just tested this code:

Code:

---

// app.h
#include <QObject>
 
class Mouse : public QObject
{
    Q_OBJECT
protected:
    bool eventFilter(QObject *obj, QEvent *event);
};

---

Code:

---

// app.cpp
#include "app.h"
#include <QtGui>
 
bool Mouse::eventFilter(QObject *obj, QEvent *event)
{
    if (event->type() == QEvent::MouseButtonPress) {
		qDebug() << "mouse press";
        return true;
    } else {
        // standard event processing
        return QObject::eventFilter(obj, event);
    }
}
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QWidget * w = new QWidget();
    QVBoxLayout * l = new QVBoxLayout(w);
    w->setLayout(l);
    QLabel * lbl = new QLabel(w);
    lbl->installEventFilter(new Mouse());
    l->addWidget(lbl);
    w->show();
 
    return a.exec();
}

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When clicking on the label I can see "mouse press" text in console window.