VTK 7.1rc2 works now in my project. It was a problem with wrong linked libraries. Used IDE: C++Builder Berlin Update 1, bcc64 -- View this message in context: http://vtk.1045678.n5.nabble.com/Change-of-OpenGL-Backend-tp5741188p5741213.html Sent from the VTK - Users mailing list archive at Nabble.com.