Forward Declaration Error on overriding

[faiszalkhan]

I have made a class Canvas which inherits class QGraphicsScene.

class Canvas : public QGraphicsScene
{
.....
}

I have overriden the function mousePressEvent with the following.

/* This overridden is used to emit the signal to draw the state */
void Canvas::mousePressEvent(QGraphicsSceneMouseEvent *gevent)
{
//This is not working
// gevent->pos();
qDebug("The value of the input event is \n");
// qDebug()<<gevent;
qDebug("Mouse has been pressed");
emit(makestate(gevent)); //emit the signal here
}

My basic requirement is to get the pos() of the mouse clicked. The problem is that in the below function I cannot access gevent. The reported errors are as follows:
error: member access into incomplete type 'QGraphicsSceneMouseEvent'
note: forward declaration of 'QGraphicsSceneMouseEvent'
class QGraphicsSceneMouseEvent;

Please help!

[SGaist]

Hi and welcome to devnet,

You are missing #include <QGraphicsSceneMouseEvent> in the file where you implement the method.

[faiszalkhan]

Thanks for your help!