PCL visualization in Qt using QVTK

I am rather new in Qt programming, and I am trying to visualize a point cloud from PCL inside a Qt Widget. I have tried to use this approach: https://stackoverflow.com/a/11939703/2339680, or (similar): http://www.pcl-users.org/QT-PCLVisualizer-mostly-working-td3285187.html. I get the compile error: "invalid static_cast from type ‘vtkObjectBase* const’ to type ‘vtkRenderWindow*’" when trying to set the render window in my QVTKWidget. For reference, I have included code from the second source below, which reproduces the error. ``` #include <pcl/sample_consensus/sac_model_plane.h> #include <pcl/visualization/cloud_viewer.h> #include <pcl/common/common.h> #include <QVTKWidget.h> int main(int argc, char** argv) { QApplication app(argc, argv); QVTKWidget widget; widget.resize(512, 256); // { pcl::PointCloud<pcl::PointXYZ>::Ptr cloud_xyz (new pcl::PointCloud<pcl::PointXYZ>); { for (float y = -0.5f; y <= 0.5f; y += 0.01f) { for (float z = -0.5f; z <= 0.5f; z += 0.01f) { pcl::PointXYZ point; point.x = 2.0f - y; point.y = y; point.z = z; cloud_xyz->points.push_back (point); } } cloud_xyz->width = cloud_xyz->points.size (); cloud_xyz->height = 1; } // this creates and displays a window named "test_viz" // upon calling PCLVisualizerInteractor interactor_->Initialize (); // how to disable that? pcl::visualization::PCLVisualizer pviz ("test_viz"); pviz.addPointCloud<pcl::PointXYZ>(cloud_xyz); pviz.setBackgroundColor(0, 0, 0.1); vtkSmartPointer<vtkRenderWindow> renderWindow = pviz.getRenderWindow(); widget.SetRenderWindow(renderWindow); } widget.show(); app.exec(); return EXIT_SUCCESS; } ``` The error is occures at the line ``` widget.SetRenderWindow(renderWindow); ``` I am using Qt 4.8.0 and PCL 1.7.0. Does anyone know if it is possible to get around this?