keyPressEvent problem

[amulya]

hi,

i m trying to capture the key press event. Now, this works for all other keys except the Tab key. What could be the problem?? Here is the code

Image_check::Image_check(QWidget *parent, Qt::WFlags flags)
    : QWidget(parent, flags)
{
  ui.setupUi(this);
  ui.pushButton->setFocus();
  /*  ui.pushButton->setFocusPolicy(Qt::StrongFocus );
  ui.pushButton_2->setFocusPolicy(Qt::StrongFocus );*/
 
}
void Image_check::keyPressEvent(QKeyEvent *e)
{
	if(e->key() == Qt::Key_Tab)
	{
		if(sender() == ui.pushButton)
		{
			QMessageBox::information(this, "Application name",
		"first"
		"The factory default will be used instead.");
		}
		else
		{
			QMessageBox::information(this, "Application name",
		"second"
		"The factory default will be used instead.");
		}
		QWidget::keyPressEvent(e);
	}
	else
		QWidget::keyPressEvent(e);
}

Image_check::Image_check(QWidget *parent, Qt::WFlags flags)
    : QWidget(parent, flags)
{
  ui.setupUi(this);
  ui.pushButton->setFocus();
  /*  ui.pushButton->setFocusPolicy(Qt::StrongFocus );
  ui.pushButton_2->setFocusPolicy(Qt::StrongFocus );*/
  
}
void Image_check::keyPressEvent(QKeyEvent *e)
{
	if(e->key() == Qt::Key_Tab)
	{
		if(sender() == ui.pushButton)
		{
			QMessageBox::information(this, "Application name",
		"first"
		"The factory default will be used instead.");
		}
		else
		{
			QMessageBox::information(this, "Application name",
		"second"
		"The factory default will be used instead.");
		}
		QWidget::keyPressEvent(e);
	}
	else
		QWidget::keyPressEvent(e);
}

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I need to capture the Tab key..and that only is not working
Please tell ur suggestions on this..Thanx

Amulya

[wysota]

You can't catch the tab key in keyPressEvent. Override event() instead.

bool MyClass:event( QEvent *evt ) {
      if ( evt->type() == QEvent::KeyPress ) {
          QKeyEvent *ke = (QKeyEvent *)evt;
          if ( ke->key() == Key_Tab ) {
              // special tab handling here
              ke->accept();
              return TRUE;
          }
      }
      return QWidget::event( evt );
}

bool MyClass:event( QEvent *evt ) {
      if ( evt->type() == QEvent::KeyPress ) {
          QKeyEvent *ke = (QKeyEvent *)evt;
          if ( ke->key() == Key_Tab ) {
              // special tab handling here
              ke->accept();
              return TRUE;
          }
      }
      return QWidget::event( evt );
}

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[anafor2004]

" QKeyEvent *ke = (QKeyEvent *)evt; "

I couldn't do this conversion. IDE always appers this message "unused variable 'ke' ".I think there is some thing wrong here.

deneme.cpp:27: warning: unused variable 'ke'
deneme.cpp:28: error: `ke' undeclared (first use this function)

[aamer4yu]

There must be some typing mistake,,, can u post the code part which is giving error ??

[anafor2004]

okay i solve this problem.