using mouse events of a QTextEdit made with the designer

[ravas]

My goal is to use mouseReleaseEvent() to copy the selection of a QTextEdit that was created in designer <widget class="QTextEdit" name="textEdit">.

With the following code, a secondary QTextEdit is created. My desired feature does work... however, I didn't want to create a second QTextEdit, I wanted to deal with the existing one. How can I accomplish that?

notepad.h

#ifndef NOTEPAD_H
#define NOTEPAD_H

#include <QMainWindow>
#include <QTextEdit>

namespace Ui {
class Notepad;
class textEdit;
}

class Notepad : public QMainWindow
{
    Q_OBJECT

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

private slots:
    void on_quitButton_clicked();

private:
    Ui::Notepad *ui;
};


class textEdit : public QTextEdit
{
    Q_OBJECT

public:
    textEdit(QWidget *parent);

private slots:

    void mouseReleaseEvent(QMouseEvent *event);

};

#endif // NOTEPAD_H

notepad.cpp

#include "notepad.h"
#include "ui_notepad.h"


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

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


void Notepad::on_quitButton_clicked()
{
    qApp->quit();

}

textEdit::textEdit(QWidget *parent) :
    QTextEdit(parent){}

void textEdit::mouseReleaseEvent(QMouseEvent *event)
{
    copy();
}

main.cpp

#include "notepad.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Notepad w;
    w.show();
    textEdit txt(&w);
    txt.show();

    return a.exec();
}

[SGaist]

Hi,

You can can use an event filter. More details there

Hope it helps

[ravas]

@SGaist I don't understand. What am I connecting the filter to? Notepad? It seems like I would need to check what widget the event is from. This leaves me with the same problem... I just need to know how to define the class that already exists in the .ui file.

[ravas]

The solution is to right click on the textEdit and then choose Promote.
I named the promoted class as qText and created the following files.

qtext.h

#define QTEXT_H

#include <QTextEdit>

class qText : public QTextEdit
{
    Q_OBJECT

public:

    explicit qText(QWidget *parent);

private slots:

    void mouseReleaseEvent(QMouseEvent *event);

};

#endif // QTEXT_H

qtext.cpp

#include "qtext.h"

qText::qText(QWidget *parent) :
    QTextEdit(parent) {}

void qText::mouseReleaseEvent(QMouseEvent *event)
{
    copy();
    QTextEdit::mouseReleaseEvent(event);
}