librviz and vtk conflict

edit

In a Qt Application, I use librviz to display pointcloud data constantly ; vtk to process pointcloud data。 vtk is ok; but librviz cannot interact with user

ros: kinetic qt:qt5 vtk:6.2 ubuntu:16.04

librviz is installed by

sudo apt-get install ros-kinetic-desktop-full

Thanks in advance!

Update with code:

cmWidgetByRviz = new CreateMapWidgetByRviz(this);  //use librviz
cmWidgetByRviz->doInit();
pmWidget = new ProcessMapWidget(this); //use vtk
pmWidget->doInit();
tabWidget->addTab(cmWidgetByRviz, tr("cmByrviz"));
tabWidget->addTab(pmWidget, tr("ProcessMap"));