problem with slot

[as001622]

Hello!
I've created my own button. But when I try to connect it with SLOT(quit()) this slot dosn't work. Could anybody find a problem?

#ifndef MYBUTTON_H
#define MYBUTTON_H
 
#include <QtGui> 
 
class MYButton : public QAbstractButton
{
   Q_OBJECT
 
public:
   MYButton(QWidget * parent = 0);
   ~MYButton();
 
    void setDefaulImageFileName(QString &filename);
    void setActionImageFileName(QString &filename);
 
protected:
   void paintEvent(QPaintEvent * pe);
   QSize sizeHint();
 
   void enterEvent(QEvent * e);
   void leaveEvent(QEvent * e);
   void mousePressEvent(QMouseEvent * e);
   void mouseReleaseEvent(QMouseEvent * e);
 
private:
    QString defaultImageFileName;
    QString actionImageFileName;
    QImage *defaultImage;
    QImage *actionImage;
    bool m_enter;
    bool m_leave;
    bool m_mousePressEvent;
    bool m_mouseReleaseEvent;
};
 
#endif

#ifndef MYBUTTON_H
#define MYBUTTON_H

#include <QtGui> 

class MYButton : public QAbstractButton
{
   Q_OBJECT

public:
   MYButton(QWidget * parent = 0);
   ~MYButton();

    void setDefaulImageFileName(QString &filename);
    void setActionImageFileName(QString &filename);

protected:
   void paintEvent(QPaintEvent * pe);
   QSize sizeHint();

   void enterEvent(QEvent * e);
   void leaveEvent(QEvent * e);
   void mousePressEvent(QMouseEvent * e);
   void mouseReleaseEvent(QMouseEvent * e);

private:
    QString defaultImageFileName;
    QString actionImageFileName;
    QImage *defaultImage;
    QImage *actionImage;
    bool m_enter;
    bool m_leave;
    bool m_mousePressEvent;
    bool m_mouseReleaseEvent;
};

#endif

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#include <QtGui>
 #include "MYbutton.h"    
 static const int buttonWidth=233;
 static const int buttonHeight=55;
 static const QSize buttonSize(buttonWidth, buttonHeight);
 
 
 
 MYButton::MYButton(QWidget *parent) : QAbstractButton(parent)
 {
     QSize frameSize(buttonWidth+3, buttonHeight+6);
     setPalette(QPalette(QColor(0, 0, 0)));
     setAutoFillBackground(true);
     setMaximumSize(frameSize);
     setMinimumSize(frameSize);
     m_leave=true;
     m_enter=false;
     m_mousePressEvent=false;
     m_mouseReleaseEvent=false;
 }
 
 MYButton::~MYButton()
 {
 }
 
 void MYButton::paintEvent(QPaintEvent *pe)
 {    
     Q_UNUSED(pe);
     QImage *defaultImage = new QImage;
     QImage *actionImage = new QImage;
     defaultImage->load(defaultImageFileName);
     actionImage->load(actionImageFileName);
     QImage *image = new QImage;
     if (!m_enter)
     {
         image=defaultImage;
     }
     else
     {
         image=actionImage;
     };
 
 
     QPainter painter(this);
     QPointF point;
     if(!m_mousePressEvent)
     {
         point.setX(1);
         point.setY(1);
     }
     else
     {
         point.setX(3);
         point.setY(3);
     }
 
     painter.drawImage(point, *image);
 
 }
 
 QSize MYButton::sizeHint()
 {
     return buttonSize;
 }
 
 void MYButton::enterEvent(QEvent *e)
 {
     m_enter=true;
     this->repaint();
 }
 
 void MYButton::leaveEvent(QEvent *e)
 {
     m_enter=false;
     m_mousePressEvent=false;
     this->repaint();
 }
 
 void MYButton::mousePressEvent(QMouseEvent *e)
 {
     m_mousePressEvent=true;    
     this->repaint();
 }
 
 void MYButton::mouseReleaseEvent(QMouseEvent *e)
 {
     m_mousePressEvent=false;
     this->repaint();
 }
 
 void MYButton::setActionImageFileName(QString &filename)
 {
     actionImageFileName=filename;
 }
 
 void MYButton::setDefaulImageFileName(QString &filename)
 {
     defaultImageFileName=filename;
 }

#include <QtGui>
 #include "MYbutton.h"    
 static const int buttonWidth=233;
 static const int buttonHeight=55;
 static const QSize buttonSize(buttonWidth, buttonHeight);

 

 MYButton::MYButton(QWidget *parent) : QAbstractButton(parent)
 {
     QSize frameSize(buttonWidth+3, buttonHeight+6);
     setPalette(QPalette(QColor(0, 0, 0)));
     setAutoFillBackground(true);
     setMaximumSize(frameSize);
     setMinimumSize(frameSize);
     m_leave=true;
     m_enter=false;
     m_mousePressEvent=false;
     m_mouseReleaseEvent=false;
 }

 MYButton::~MYButton()
 {
 }

 void MYButton::paintEvent(QPaintEvent *pe)
 {    
     Q_UNUSED(pe);
     QImage *defaultImage = new QImage;
     QImage *actionImage = new QImage;
     defaultImage->load(defaultImageFileName);
     actionImage->load(actionImageFileName);
     QImage *image = new QImage;
     if (!m_enter)
     {
         image=defaultImage;
     }
     else
     {
         image=actionImage;
     };
    

     QPainter painter(this);
     QPointF point;
     if(!m_mousePressEvent)
     {
         point.setX(1);
         point.setY(1);
     }
     else
     {
         point.setX(3);
         point.setY(3);
     }
     
     painter.drawImage(point, *image);

 }

 QSize MYButton::sizeHint()
 {
     return buttonSize;
 }

 void MYButton::enterEvent(QEvent *e)
 {
     m_enter=true;
     this->repaint();
 }

 void MYButton::leaveEvent(QEvent *e)
 {
     m_enter=false;
     m_mousePressEvent=false;
     this->repaint();
 }

 void MYButton::mousePressEvent(QMouseEvent *e)
 {
     m_mousePressEvent=true;    
     this->repaint();
 }

 void MYButton::mouseReleaseEvent(QMouseEvent *e)
 {
     m_mousePressEvent=false;
     this->repaint();
 }

 void MYButton::setActionImageFileName(QString &filename)
 {
     actionImageFileName=filename;
 }

 void MYButton::setDefaulImageFileName(QString &filename)
 {
     defaultImageFileName=filename;
 }

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#include <QtGui/QApplication>
#include <QtGui/QVBoxLayout>
#include "MYbutton.h"
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MYButton *button1=new MYButton;
    button1->setDefaulImageFileName(QString("images/default_button.png"));
    button1->setActionImageFileName(QString("images/action_button.png"));
    QObject::connect(button1,SIGNAL(clicked()),&a, SLOT(quit()));
    button1->show();
    return a.exec();
}

#include <QtGui/QApplication>
#include <QtGui/QVBoxLayout>
#include "MYbutton.h"
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MYButton *button1=new MYButton;
    button1->setDefaulImageFileName(QString("images/default_button.png"));
    button1->setActionImageFileName(QString("images/action_button.png"));
    QObject::connect(button1,SIGNAL(clicked()),&a, SLOT(quit()));
    button1->show();
    return a.exec();
}

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[wysota]

You have to call the base class implementation of mouse events.

[as001622]

Thanks, but could you explain me where I have to do this, please?

[jpn]

void SubClass::function()
{
    BaseClass::function();
    ...
}

void SubClass::function()
{
    BaseClass::function();
    ...
}

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[santhoshv84]

Hi,

I think you must set setMouseTracking(true).
Try this.

Thanks and regards.
V. Santhosh