CV_MODE_OPENGL   1608 modules/highgui/src/window_QT.cpp     mode_display = arg2 & CV_WINDOW_OPENGL ? CV_MODE_OPENGL : CV_MODE_NORMAL;
CV_MODE_OPENGL   1609 modules/highgui/src/window_QT.cpp     if (mode_display == CV_MODE_OPENGL)
CV_MODE_OPENGL   1874 modules/highgui/src/window_QT.cpp     return mode_display == CV_MODE_OPENGL;