QPushButton on Shift+Click?

[vishal.chauhan]

Hi All,

I want to implement a QPushButton in such a way that it do something when user click it
for which I can use clicked() signal but I also want that when user click while shift button is pressed then it will do something else.

How can I do it?

Thanks
Vishal Chauhan

[spirit]

you can subclass QPushButton and reimplement keyPressEvent or you can install event fillter for your button and process QKeyEvent.

[vishal.chauhan]

Thanks for reply.

Can you give some sample code for doing it.

[spirit]

sorry, not QKeyEvent, but QMouseEvent
1. subclassing

void MyPushButton::mousePressEvent(QMouseEvent *e)
{
      if (e->modifiers() == Qt::ShiftModifier) {
           //do what you need
           return;
      }
      QPushButton::mousePressEvent(e);
}

void MyPushButton::mousePressEvent(QMouseEvent *e)
{
      if (e->modifiers() == Qt::ShiftModifier) {
           //do what you need
           return;
      }
      QPushButton::mousePressEvent(e);
}

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2. installFilter

...
pushButton->installEventFilter(this);
...
 
bool MyWidget::eventFilter(QObject *obj, QEvent *event)
{
    if (obj == pushButton && event->type() == QEvent::MouseButtonPress) {
         QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
         if (event->modifiers() == Qt::ShiftModifier) {
             //do what you need
             return true;
         }
    }
    return QWidget::eventFilter(obj, event);
}

...
pushButton->installEventFilter(this);
...

bool MyWidget::eventFilter(QObject *obj, QEvent *event)
{
    if (obj == pushButton && event->type() == QEvent::MouseButtonPress) {
         QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
         if (event->modifiers() == Qt::ShiftModifier) {
             //do what you need
             return true;
         }
    }
    return QWidget::eventFilter(obj, event);
}

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