enable/disable widget using mousePressEvent/mouseReleaseEvent

Question

I have a set of widgets to control a parameter in five similar places (or channels).

Now I can enable/disable each of these widgets using a pushbuttons, as follows.

connect(ui->pushButton_currOnOne, &QPushButton::clicked, ui->widget_currentOne, &CurrentButtonOne::setEnabled);
connect(ui->pushButton_currOnTwo, &QPushButton::clicked, ui->widget_currentTwo, &CurrentButtonOne::setEnabled);
connect(ui->pushButton_currOnThree, &QPushButton::clicked, ui->widget_currentThree, &CurrentButtonOne::setEnabled);
connect(ui->pushButton_currOnFour, &QPushButton::clicked, ui->widget_currentFour, &CurrentButtonOne::setEnabled);
connect(ui->pushButton_currOnFive, &QPushButton::clicked, ui->widget_currentFive, &CurrentButtonOne::setEnabled);

Can I use mousePressEvent/mouseReleaseEvent instead of using &QPushButton::clicked in the above scenario? It will be very helpful if you could show me an example.

Thanks in advance

Difference between signals (`QPushButton::clicked`) and events (`mousePressEvent`): https://stackoverflow.com/questions/3794649/qt-events-and-signal-slots — m7913d, Aug 14 '20 at 09:17

score 1 · Accepted Answer · edited Aug 14 '20 at 09:16

Some code to get you started.

mybutton.h:

#include <QObject>
#include <QPushButton>
#include <QMouseEvent>

class MyButton : public QPushButton
{
public:
    explicit MyButton(QWidget *parent = nullptr);
    
protected:
    void mousePressEvent(QMouseEvent *e) override;
    void mouseReleaseEvent(QMouseEvent *e) override;
    
private:
    bool isPressed = false;
    
signals:
    void myButtonPressed();
};

mybutton.cpp:

#include "mybutton.h"

MyButton::MyButton(QWidget *parent) : QPushButton(parent)
{
    
}

void MyButton::mousePressEvent(QMouseEvent *e)
{
    isPressed = true;
    emit myButtonPressed();
    QPushButton::mousePressEvent(e);
}

void MyButton::mouseReleaseEvent(QMouseEvent *e)
{
    isPressed = false;
    QPushButton::mouseReleaseEvent(e);
}

I'm not sure, what exactly you are trying to achieve, but this idea should meet your needs.

You create a class, which inherits from QPushButton (or QAbstractButton) and override its mousePressEvent and mouseReleaseEvent. If you want some other widgets to react on this events, you emit signal and connect other widgets to that signal.

Thanks a lot for your answer! Now I got the basic idea of using QEvents. Just to add, my requirement to enable/disable the `QWidget` using mousePress/Rlease events (toggle Qwidget with mouse events). In this case what do you recommend? — tetra, Aug 14 '20 at 10:21

enable/disable widget using mousePressEvent/mouseReleaseEvent

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