Hi, st 26. 12. 2018 v 15:16 odesÃlatel Huidae Cho <grass4u at gmail.com> napsal: > I tried static_cast, but it didn't work (not sure why). C-style casting and reinterpret_cast worked though. thanks for fix. Martin -- Martin Landa http://geo.fsv.cvut.cz/gwiki/Landa http://gismentors.cz/mentors/landa