subclass the QLabel

[ready]

I want to get the coordinate from Qlabel when I double click on...
how do I sub class the Qlabel in ui application
my code looks:
mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}
 
MainWindow::~MainWindow()
{
    delete ui;
}

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}

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mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
 
namespace Ui {
    class MainWindow;
}
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
 
private:
    Ui::MainWindow *ui;
};

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
    class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
    

private:
    Ui::MainWindow *ui;
};

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[szisziszilvi]

is your question probably about promition if you google it? If I understand well, you want to give extra features to QLabel, than in the first step "promote to" is your friend, you may find more information in the documentation.

[ready]

is your question probably about promition if you google it?

Is your answer to this thread is promotion??

[BalaQT]

hi , u can override the mousPressEvent

void QLabel::mousePressEvent(QMouseEvent *evt)
{
    qDebug()<<"X"<<evt->x()<<"Y"<<evt->y();
}

void QLabel::mousePressEvent(QMouseEvent *evt)
{
    qDebug()<<"X"<<evt->x()<<"Y"<<evt->y();
}

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hope it helps
Bala

[ready]

thanks bala...
but i am getting confused where should i declare the class to override the mousepressevent..
is it in mainwindows.h??

[BalaQT]

put it in mainwindow.cpp

hope it helps
Bala

[MarekR22]

hi , u can override the mousPressEvent

void QLabel::mousePressEvent(QMouseEvent *evt)
{
    qDebug()<<"X"<<evt->x()<<"Y"<<evt->y();
}

void QLabel::mousePressEvent(QMouseEvent *evt)
{
    qDebug()<<"X"<<evt->x()<<"Y"<<evt->y();
}

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hope it helps
Bala

Do you really think this will compile and link? No comment!


@topic:
The simples way to solve this problem is to install event filter see: QObject::installEventFilter for details.

Another think you are doing common mistake in asking questions!
You giving us ready solution of your problem and asking how to make it work.
First you should explain what you want to achieve then explain how you tried to solve it this problem. I wouldn't be surprised if some would give you a better solution of primary problem.

[BalaQT]

Do you really think this will compile and link? No comment!

yes it is compiling. whats wrong?
have you try in your end?

bala

[MarekR22]

does it work?

[ready]

thanks marek
the event filter class u mentioned above...
do I need to declare this class in mainwindow.cpp(of ui class)

[MarekR22]

I still think that your approach is totally wrong! QLabel is design just to visualize text not for user interaction. What you are try to do in first place?