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Qt-interest Archive, January 2007
QGraphics - Context Menu

Message 1 in thread

Hi,

I would like implement context menu in QGraphics. I tried reimplement
contextMenuEvent in a class that Inherit from QGraphicsView and then
call exec method, but doesn't work.

class X : public QGraphicsView
{
    X (QWidget *parent = 0);

private:
    QAction *test;

    void contextMenuEvent (QGraphicsSceneContextMenuEvent *);

};

X::X (QWidget *parent)
    : QGraphicsView (parent)
{
    test = new QAction ("&Test", parent);
}

void X::contextMenuEvent (QGraphicsSceneContextMenuEvent *e)
{
    QMenu *menu = new QMenu;
    menu->addAction(action_test);
    menu->exec(e->scenePos());
}

Can anyone help me?

Thanks,
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Message 2 in thread

On Tue, Jan 23, Kung Te Yang wrote:

> Hi,
> 
> I would like implement context menu in QGraphics. I tried reimplement
> contextMenuEvent in a class that Inherit from QGraphicsView and then
> call exec method, but doesn't work.
> 
> class X : public QGraphicsView
> {
>    X (QWidget *parent = 0);
> 
> private:
>    QAction *test;
> 
>    void contextMenuEvent (QGraphicsSceneContextMenuEvent *);
> 
> };
> 
> X::X (QWidget *parent)
>    : QGraphicsView (parent)
> {
>    test = new QAction ("&Test", parent);
> }
> 
> void X::contextMenuEvent (QGraphicsSceneContextMenuEvent *e)

Here I have in my app:


> void X::contextMenuEvent (QContextMenuEvent *e)

> {
>    QMenu *menu = new QMenu;
>    menu->addAction(action_test);
>    menu->exec(e->scenePos());

context menus are predefined and

    contextMenu->popup(e->globalPos() );


Hope that helps,

        Uwe 

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 [ signature omitted ]