Qt: How to catch QDateEdit click event?

Question

I'm trying to catch mouse click on QDateEdit widget by handling QEvent::MouseButtonRelease event, but can't find a way to do it. I tried to override QWidget::event method of the parent widget, but it seems that events go through children to parent, and QDateEdit internally handles those events without propagating to a parent. Is there any correct solution or workaround?

Answer 1

QDateEdit extends a QWidget class. So you can just inherit QDateEdit and override virtual void mouseReleaseEvent(QMouseEvent *event) function and do what you want there.

Update:

Function mouseReleaseEvent is really not invoke.

Try to install an event filter to the line edit in QDateEdit. Example:

MyDateEdit.h

#include <QDateEdit>

class MyDateEdit : public QDateEdit
{
  Q_OBJECT
public:
  MyDateEdit(QWidget *parent = 0);
  bool eventFilter(QObject* object, QEvent* event) override;
};

MyDateEdit.cpp

#include "MyDateEdit.h"    
#include <QDebug>
#include <QEvent>
#include <QLineEdit>

MyDateEdit::MyDateEdit(QWidget *parent) : QDateEdit (parent)
{
  installEventFilter(this);
  lineEdit()->installEventFilter(this);
}

bool MyDateEdit::eventFilter(QObject* object, QEvent* event)
{
  if (object == this || object == lineEdit())
  {
    if (event->type() == QEvent::MouseButtonRelease)
    {
      qDebug() << "Mouse release event";
    }
  }    
  return QDateEdit::eventFilter(object, event);
}