Keyboard events inside a QQuickPaintedItem/QQuickItem

mattropolis

Hi all,

I was writing an OpenGL widget (which is working fine), and I got mouse events working great - but am having a terrible time getting keyboard events to fire/register. I have overridden keyPressEvent/keyReleaseEvent, but when I click on the widget (widget is placed/loaded in a QML script), the mouse events fire, but no keyboard events seem to fire in the keyPress/ReleaseEvent callbacks.

I noted that I had to use setAcceptedMouseButtons() in order to get mouse events to work, is there any equivalent for keyboard events that I should be setting?
Am I missing something? The docs seem to indicate setting the focus policy, but setFocusPolicy() doesn't work on QtQuick items.

Any help would be greatly appreciated!

glViewer.h
@
class glViewer:public QQuickPaintedItem
{
Q_OBJECT

public:
glViewer();
~glViewer();
void mousePressEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent * event);
void wheelEvent(QWheelEvent *event);
void keyPressEvent(QKeyEvent event);
void keyReleaseEvent(QKeyEvent keyEvent);
...

public slots:
void preRender();
void paint(QPainter *painter);
void selectedBufferAttributeIndexUpdate();

...
}
@

glViewer.cpp
@
glViewer::glViewer()
{
// set the drawing render target to a paint FBO
setRenderTarget(QQuickPaintedItem::FramebufferObject);

// enable mouse events
setAcceptedMouseButtons(Qt::AllButtons);
setAcceptHoverEvents(true);
}

void glViewer::mousePressEvent(QMouseEvent *event) { ...}
void glViewer::mouseReleaseEvent(QMouseEvent *event) {...}
...
void glViewer::keyPressEvent(QKeyEvent event) {...}
void glViewer::keyReleaseEvent(QKeyEvent keyEvent) {...}
@

froncer

I can receive key events, when I set the focus:true property in the QML script and overload the focusInEvent() function, where I set forceAtiveFocus().

@
..
void TreeViewControl::focusInEvent(QFocusEvent * event)
{
forceActiveFocus();
}
..
@

@
MyTreeViewControlArea
{
focus:true
anchors.top: parent.top
anchors.left: parent.left
width: parent.width
height: parent.height
opacity: 0.8
}
@

You can find some information about focus handling in QtQuick here:
http://qt-project.org/doc/qt-5/qtquick-input-focus.html

QtTester

you need to call setFlag(ItemAcceptsInputMethod, true);