signature          62 modules/highgui/src/window_carbon.cpp     int signature;
signature          83 modules/highgui/src/window_carbon.cpp     int signature;
signature         503 modules/highgui/src/window_gtk.cpp     int signature;
signature         520 modules/highgui/src/window_gtk.cpp     int signature;
signature         132 modules/highgui/src/window_w32.cpp     int signature;
signature         151 modules/highgui/src/window_w32.cpp     int signature;