[vtkusers] Key events in QVTKWidget2

[Rakesh Patil]

Hi,


I would like to know how the events are propogated in case of QVTKWidget & QVTKWidget2. Is there any difference in these two? I have an application built with QVTKWidget. I have Graphics window derived from QVTKWidget


#ifndef GRAPHICSWINDOW_H

#define GRAPHICSWINDOW_H


#include <QWidget>


#include "QVTKWidget.h"

#include <vtkRenderer.h>


class GraphicsWindow : public QVTKWidget

{

    Q_OBJECT

    vtkRenderer *currentRenderer;



public:


    GraphicsWindow(QWidget *parent = NULL);

    ~GraphicsWindow();


protected:


    virtual void keyPressEvent(QKeyEvent *event);

    virtual void keyReleaseEvent(QKeyEvent *event);


};

#endif


The definition for this class is as follows:


GraphicsWindow::GraphicsWindow(QWidget *parent)

    :QVTKWidget(parent)

{

#ifdef QT_DEBUG

    vtkObject::GlobalWarningDisplayOn();

#else

    vtkObject::GlobalWarningDisplayOff();

#endif


    currentRenderer = vtkRenderer::New();

    currentRenderer->SetBackground( 0.5, 0.0, 0.0);



//    vtkGenericOpenGLRenderWindow *glrw = vtkGenericOpenGLRenderWindow::SafeDownCast(this->GetRenderWindow());

//    glrw->AddRenderer(currentRenderer);

//    this->SetRenderWindow(glrw);


    this->GetRenderWindow()->AddRenderer(currentRenderer);

    this->GetRenderWindow()->GetInteractor()->SetInteractorStyle(currentInteractorStyle);


    vtkSmartPointer<vtkCubeSource> cubeSource =

            vtkSmartPointer<vtkCubeSource>::New();

    cubeSource->SetCenter(10, 10, 10);

    cubeSource->SetXLength(10);

    cubeSource->SetYLength(10);

    cubeSource->SetZLength(30);

    cubeSource->Update();


    vtkSmartPointer<vtkDataSetMapper> cubeMapper =

            vtkSmartPointer<vtkDataSetMapper>::New();


    cubeMapper->SetInputConnection(cubeSource->GetOutputPort());


    vtkActor *cubeActor = vtkActor::New();

    cubeActor->SetMapper(cubeMapper);

    cubeActor->GetProperty()->SetRepresentationToWireframe();

    cubeActor->GetProperty()->LightingOff();

    cubeActor->GetProperty()->SetColor(1, 1, 1);


    currentRenderer->AddActor(cubeActor);

}



GraphicsWindow::~GraphicsWindow()

{


}


void GraphicsWindow::keyPressEvent(QKeyEvent *event)

{

    std::cout << "Key press" << std::endl;

}


void GraphicsWindow::keyReleaseEvent(QKeyEvent *event)

{

    std::cout << "Key release" << std::endl;

}


When this application is built with QVTKWidget, the keypress and keyrelease events are executing fine. But when the same code built with QVTKWidget2 there key events are not processed. Is there any differences in these two widgets? Is there anything wrong I am doing? Kindly guide me as to how to process key events using QVTKWidget2.


Thanks


Warm Regards

Rakesh Patil
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