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Problem with key event [SOLVED]

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Mad Max

Trainee

  • "Mad Max" is male
  • "Mad Max" started this thread

Posts: 75

Location: Russia

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1

Thursday, September 15th 2005, 12:33pm

Problem with key event [SOLVED]

Hi all.
I have the form which contains a copy of class QListView. The list contains short information (for example about employes). For viewing the advanced information I have a dock window. To show this window I should intercept a space key. I.e. select the necessery record and press space bar.

Source code

 
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void frmMain::slotShowPassport()
{
  if (passportForm->isShown()) {
    removeDockWindow(passportForm);
    passportForm->hide();
  } else {
    addDockWindow(passportForm, Qt::DockRight);
    passportForm->show();
  }
}

void frmMain::keyPressEvent(QKeyEvent * e)
{
    switch (e->key()) {
    case Qt::Key_Space:
      slotShowPassport();
      break;
    default:
      break;
    }
}


All super, while the list empty. If I fill the list then frmMain::keyPressEvent method do not recieve QKeyEvent. Then I have made thus:

Source code

 
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void frmMain::init()
{
   ...
   listView->installEventFilter(this);
   ...
}

bool frmMain::eventFilter(QObject * watched, QEvent * e)
{
  if ( watched == listView ) {
    if ( e->type() == QEvent::KeyPress ) {
      QKeyEvent * ev = dynamic_cast<QKeyEvent*>(e);
      switch (ev->key()) {
      case Qt::Key_Space:
	slotShowPassport();
	break;
      default:
	ev->accept();
	break;
      }
      return true;
    } else {
      return false;
    }
  } else {
    return QMainWindow::eventFilter( watched, e );
  }
}


It is worked, the dock window shows and hides perfect, but not work other keys ?( For example navigation under the list does not work. Tell me please, what is wrong?
I am using qt 3.3.5 on Mandrake 10.1

This post has been edited 1 times, last edit by "Mad Max" (Sep 16th 2005, 10:50am)

Mad Max

Trainee

  • "Mad Max" is male
  • "Mad Max" started this thread

Posts: 75

Location: Russia

  • Send private message

2

Friday, September 16th 2005, 10:29am

RE: Problem with key event

Quoted

Originally posted by Mad Max
All super, while the list empty. If I fill the list then frmMain::keyPressEvent method do not recieve QKeyEvent. Then I have made thus:

Source code

 
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void frmMain::init()
{
   ...
   listView->installEventFilter(this);
   ...
}

bool frmMain::eventFilter(QObject * watched, QEvent * e)
{
  if ( watched == listView ) {
    if ( e->type() == QEvent::KeyPress ) {
      QKeyEvent * ev = dynamic_cast<QKeyEvent*>(e);
      switch (ev->key()) {
      case Qt::Key_Space:
	slotShowPassport();
	break;
      default:
	ev->accept();
	break;
      }
      return true;
    } else {
      return false;
    }
  } else {
    return QMainWindow::eventFilter( watched, e );
  }
}


It is worked, the dock window shows and hides perfect, but not work other keys ?( For example navigation under the list does not work. Tell me please, what is wrong?


I have understood where is wrong :D It should be so:

Source code

 
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void frmMain::init()
{
   ...
   listView->installEventFilter(this);
   ...
}

bool frmMain::eventFilter(QObject * watched, QEvent * e)
{
  if ( watched == listView ) {
    if ( e->type() == QEvent::KeyPress ) {
      QKeyEvent * ev = dynamic_cast<QKeyEvent*>(e);
      switch (ev->key()) {
      case Qt::Key_Space:
	slotShowPassport();
        return true; // !!!!!
      default:
	break;
      }
    }
  }
  return QMainWindow::eventFilter( watched, e );
}
I am using qt 3.3.5 on Mandrake 10.1