QVTKWidget

[floyd.pepper]

Hi there,

I am writing some minimal code get QVTKWidget working in QTCreator. I am using qmake to compile. The code (see below) compiles correctly but when I try to debug F5, I get a crash as soon as it tries to initialize qvtkwidget.

The paths and libraries seem to be correct. I can compile and run a VTK application when I use vtkRenderWindow.

Any help would be appreciated.

#include <QVTKWidget.h>
 
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkTextSource.h>
#include <vtkVectorText.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
 
int main(int argc, char *argv[])
{
    QApplication app(argc,argv);
    QMainWindow *mainWindow = new QMainWindow;
    mainWindow->setFixedSize(640,360);
 
   QVTKWidget *widget;
 
    widget = new QVTKWidget;  // <<-- This is where we crash :(
    widget->show();
    mainWindow->setCentralWidget(widget);
 
    vtkTextSource *text = vtkTextSource::New();
    text->SetText("Hello World!");
    text->BackingOff();
    vtkVectorText *vectorText = vtkVectorText::New();
    vectorText->SetText("QVTKWidget");
    vtkPolyDataMapper *textMapper = vtkPolyDataMapper::New();
    textMapper->SetInput(text->GetOutput());
    vtkPolyDataMapper *vectorTextMapper = vtkPolyDataMapper::New();
    vectorTextMapper->SetInput(vectorText->GetOutput());
    vtkActor *textActor = vtkActor::New();
    textActor->SetMapper(textMapper);
    vtkActor *vectorTextActor = vtkActor::New();
    vectorTextActor->SetMapper(vectorTextMapper);
    vtkRenderer *renderer = vtkRenderer::New();
    renderer->SetBackground(0.4,0.6,0.8);
    renderer->AddActor(textActor);
    renderer->AddActor(vectorTextActor);
    vtkRenderWindow *renderWindow = vtkRenderWindow::New();
    renderWindow->AddRenderer(renderer);
    renderWindow->SetStereoTypeToDresden();
 
    widget->SetRenderWindow(renderWindow);
    mainWindow->show();
    app.aboutQt();
    return app.exec();
 
}

#include <QVTKWidget.h>

#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkTextSource.h>
#include <vtkVectorText.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>

int main(int argc, char *argv[])
{
    QApplication app(argc,argv);
    QMainWindow *mainWindow = new QMainWindow;
    mainWindow->setFixedSize(640,360);

   QVTKWidget *widget;

    widget = new QVTKWidget;  // <<-- This is where we crash :(
    widget->show();
    mainWindow->setCentralWidget(widget);

    vtkTextSource *text = vtkTextSource::New();
    text->SetText("Hello World!");
    text->BackingOff();
    vtkVectorText *vectorText = vtkVectorText::New();
    vectorText->SetText("QVTKWidget");
    vtkPolyDataMapper *textMapper = vtkPolyDataMapper::New();
    textMapper->SetInput(text->GetOutput());
    vtkPolyDataMapper *vectorTextMapper = vtkPolyDataMapper::New();
    vectorTextMapper->SetInput(vectorText->GetOutput());
    vtkActor *textActor = vtkActor::New();
    textActor->SetMapper(textMapper);
    vtkActor *vectorTextActor = vtkActor::New();
    vectorTextActor->SetMapper(vectorTextMapper);
    vtkRenderer *renderer = vtkRenderer::New();
    renderer->SetBackground(0.4,0.6,0.8);
    renderer->AddActor(textActor);
    renderer->AddActor(vectorTextActor);
    vtkRenderWindow *renderWindow = vtkRenderWindow::New();
    renderWindow->AddRenderer(renderer);
    renderWindow->SetStereoTypeToDresden();

    widget->SetRenderWindow(renderWindow);
    mainWindow->show();
    app.aboutQt();
    return app.exec();

}

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Any help would be gratefully accepted.

All the best,
Floyd

[cristian.a]

Hello Pepper,

It might be late, but I think the problem might come from
the fact that you are using the wrong dll.

If you are building in release mode you should use a dll
built in release mode.

Cristian

Hi there,

I am writing some minimal code get QVTKWidget working in QTCreator. I am using qmake to compile. The code (see below) compiles correctly but when I try to debug F5, I get a crash as soon as it tries to initialize qvtkwidget.

The paths and libraries seem to be correct. I can compile and run a VTK application when I use vtkRenderWindow.

Any help would be appreciated.

#include <QVTKWidget.h>
 
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkTextSource.h>
#include <vtkVectorText.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
 
int main(int argc, char *argv[])
{
    QApplication app(argc,argv);
    QMainWindow *mainWindow = new QMainWindow;
    mainWindow->setFixedSize(640,360);
 
   QVTKWidget *widget;
 
    widget = new QVTKWidget;  // <<-- This is where we crash :(
    widget->show();
    mainWindow->setCentralWidget(widget);
 
    vtkTextSource *text = vtkTextSource::New();
    text->SetText("Hello World!");
    text->BackingOff();
    vtkVectorText *vectorText = vtkVectorText::New();
    vectorText->SetText("QVTKWidget");
    vtkPolyDataMapper *textMapper = vtkPolyDataMapper::New();
    textMapper->SetInput(text->GetOutput());
    vtkPolyDataMapper *vectorTextMapper = vtkPolyDataMapper::New();
    vectorTextMapper->SetInput(vectorText->GetOutput());
    vtkActor *textActor = vtkActor::New();
    textActor->SetMapper(textMapper);
    vtkActor *vectorTextActor = vtkActor::New();
    vectorTextActor->SetMapper(vectorTextMapper);
    vtkRenderer *renderer = vtkRenderer::New();
    renderer->SetBackground(0.4,0.6,0.8);
    renderer->AddActor(textActor);
    renderer->AddActor(vectorTextActor);
    vtkRenderWindow *renderWindow = vtkRenderWindow::New();
    renderWindow->AddRenderer(renderer);
    renderWindow->SetStereoTypeToDresden();
 
    widget->SetRenderWindow(renderWindow);
    mainWindow->show();
    app.aboutQt();
    return app.exec();
 
}

#include <QVTKWidget.h>

#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkTextSource.h>
#include <vtkVectorText.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>

int main(int argc, char *argv[])
{
    QApplication app(argc,argv);
    QMainWindow *mainWindow = new QMainWindow;
    mainWindow->setFixedSize(640,360);

   QVTKWidget *widget;

    widget = new QVTKWidget;  // <<-- This is where we crash :(
    widget->show();
    mainWindow->setCentralWidget(widget);

    vtkTextSource *text = vtkTextSource::New();
    text->SetText("Hello World!");
    text->BackingOff();
    vtkVectorText *vectorText = vtkVectorText::New();
    vectorText->SetText("QVTKWidget");
    vtkPolyDataMapper *textMapper = vtkPolyDataMapper::New();
    textMapper->SetInput(text->GetOutput());
    vtkPolyDataMapper *vectorTextMapper = vtkPolyDataMapper::New();
    vectorTextMapper->SetInput(vectorText->GetOutput());
    vtkActor *textActor = vtkActor::New();
    textActor->SetMapper(textMapper);
    vtkActor *vectorTextActor = vtkActor::New();
    vectorTextActor->SetMapper(vectorTextMapper);
    vtkRenderer *renderer = vtkRenderer::New();
    renderer->SetBackground(0.4,0.6,0.8);
    renderer->AddActor(textActor);
    renderer->AddActor(vectorTextActor);
    vtkRenderWindow *renderWindow = vtkRenderWindow::New();
    renderWindow->AddRenderer(renderer);
    renderWindow->SetStereoTypeToDresden();

    widget->SetRenderWindow(renderWindow);
    mainWindow->show();
    app.aboutQt();
    return app.exec();

}

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Any help would be gratefully accepted.

All the best,
Floyd