example daviscvgui.cpp doesn't compile

Created by: ru1sb

I'm trying to build daviscvgui.cpp with Qt under ubuntu but I am getting the error: " ‘const struct libcaer::events::FrameEvent’ has no member named ‘getOpenCVMat’ cv::Mat cvFrame = f.getOpenCVMat(false);" I installed libcaer without adding openCv