help needed in QMouseEvent

[Lykurg]

Because I have too much time, or better to much work to get around, here is an example:

#ifndef MYBUTTON_H
#define MYBUTTON_H
 
#include <QtGui>
 
class myButton : public QPushButton
{
  Q_OBJECT
  public:
    myButton(QWidget *parent = 0);
    void setMinimumHoldTime(int msec)
    {
      m_minimumHoldTime = msec;
    }
    int minimumHoldTime() const
    {
      return m_minimumHoldTime;
    }
  protected:
    void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);
  signals:
    void holdForMSec(int);
  private:
    QTime m_time;
    int m_minimumHoldTime;
};
 
#endif // MYBUTTON_H

#ifndef MYBUTTON_H
#define MYBUTTON_H

#include <QtGui>

class myButton : public QPushButton
{
  Q_OBJECT
  public:
    myButton(QWidget *parent = 0);
    void setMinimumHoldTime(int msec)
    {
      m_minimumHoldTime = msec;
    }
    int minimumHoldTime() const
    {
      return m_minimumHoldTime;
    }
  protected:
    void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);
  signals:
    void holdForMSec(int);
  private:
    QTime m_time;
    int m_minimumHoldTime;
};

#endif // MYBUTTON_H

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#include "mybutton.h"
 
myButton::myButton(QWidget *parent) 
  : QPushButton(parent), m_time(), m_minimumHoldTime(4000)
{}
 
void myButton::mousePressEvent(QMouseEvent *event)
{
  m_time = QTime::currentTime();
  QPushButton::mousePressEvent(event);
}
 
void myButton::mouseReleaseEvent(QMouseEvent *event)
{
  int msec = m_time.elapsed();
  // Do time check in the button class
  if (m_minimumHoldTime < msec && rect().contains(event->pos()))
    emit holdForMSec(msec);
  // or let the reciver decide what to do
  //  if (rect().contains(event->pos()))
  //    emit holdForMSec(msec);
  QPushButton::mouseReleaseEvent(event);
}

#include "mybutton.h"

myButton::myButton(QWidget *parent) 
  : QPushButton(parent), m_time(), m_minimumHoldTime(4000)
{}

void myButton::mousePressEvent(QMouseEvent *event)
{
  m_time = QTime::currentTime();
  QPushButton::mousePressEvent(event);
}

void myButton::mouseReleaseEvent(QMouseEvent *event)
{
  int msec = m_time.elapsed();
  // Do time check in the button class
  if (m_minimumHoldTime < msec && rect().contains(event->pos()))
    emit holdForMSec(msec);
  // or let the reciver decide what to do
  //  if (rect().contains(event->pos()))
  //    emit holdForMSec(msec);
  QPushButton::mouseReleaseEvent(event);
}

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@talk2amulya: If you call QTimer::start(int) you start a new "event loop" (I don't know how QTimer is exactly implemented), to measure when the time is up and at which end a signal is emitted. And this continuous! Whereas QTime simple returns a time Object. Nothing more...