Touchscreen Pan Gesture on a Qt-QML application

[lassoan (Andras Lasso)]

@Synfony

First of all, I tried to build the TouchGestureViewer example (from https://gitlab.kitware.com/vtk/vtk/tree/master/Examples/GUI/Qt/TouchGestureViewer) using VTK8.2.0 and Qt5.12.6 on Windows10(64 bit) surface.

Do you mean that you took TouchGestureViewer example from one VTK version and tried to use it in a different VTK version? You probably need to backport all related changes into your VTK version.

@Synfony

I have a QML application that renders VTK enabled 3D graphics. How should I be able integrate touch gestures on VTK window that is inside a QML item?

We use VTK in a ctkVTKAbstractView and we know it works well there. I would recommend to check first that it works for you in classic Qt application/widget and then try if it works in QML as well.