icvmouseHandler  2827 modules/highgui/src/window_QT.cpp void DefaultViewPort::icvmouseHandler(QMouseEvent *evnt, type_mouse_event category, int &cv_event, int &flags)
icvmouseHandler  3214 modules/highgui/src/window_QT.cpp void OpenGlViewPort::icvmouseHandler(QMouseEvent* evnt, type_mouse_event category, int& cv_event, int& flags)