QKeyEvent

[peace_comp]

Hi..
I would Like to use the keybord to generate events on my application ..but I still don't know how to use the QKeyEvent..
The idea is To zoom (translate ... ) on a View ( QGraphicsView) everytime we press on the Key (Up,Down,Right,Left) ..So I tried to create a methode for that Using QkeyEvent :

void myview::keyPressEvent(QKeyEvent *e){
     switch(e->key()){
      case Qt::Key_Left : 
          graphicsView->scale(1.2,1.2);
          break;
      case Qt::Key_Down :
       graphicsView->scale(1/1.2,1/1.2);
          break;
          }
          }

void myview::keyPressEvent(QKeyEvent *e){
     switch(e->key()){
      case Qt::Key_Left : 
          graphicsView->scale(1.2,1.2);
          break;
      case Qt::Key_Down :
       graphicsView->scale(1/1.2,1/1.2);
          break;
          }
          }

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but it dosnt work ( nothing happens when I press left or right Key) ??
Should I connect that methode to a specific SIGNAL ? if it the case wht signal should I use ?!!
Please if someOne have a idea ..
thanks

[maverick_pol]

Hi,

I am using the GraphicsView framework in my apps.
When the user clicks "I" some widget in the QGraphisView should be shown/hidden.
I have implemented my QMainWindow::keyPressEvent(QKeyEvent* key)
and in that method I emit signal connected with QGraphicsView parent slots.
It works for me, but still it should work with yourwidget::keyPressEvent(...)
Some sample code:

...
MyWindow::keyPressEvent(QKeyEvent* event)
{
     QString		keyText = event->text().toUpper();
 if(keyText=="I")
{
	emit		vShowViewWidget();
}
...
}

...
MyWindow::keyPressEvent(QKeyEvent* event)
{
     QString		keyText = event->text().toUpper();
 if(keyText=="I")
{
	emit		vShowViewWidget();
}
...
}

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I will try to write some example code to check keyPressEvent for the view.

Kacper

[peace_comp]

hi..
thanks..
The problem I had was within the declaration ..
i tried ur code using the event->text() .. and it worked .. i guess The problem was on the Qt::Key_Up ..
i must now find another way to use the key up..
thanks !!!