[−][src]Function opencv::highgui::set_mouse_callback

pub fn set_mouse_callback(winname: &str, on_mouse: MouseCallback) -> Result<()>

@example samples/cpp/create_mask.cpp This program demonstrates using mouse events and how to make and use a mask image (black and white) .

Sets mouse handler for the specified window

Parameters

  • winname: Name of the window.
  • onMouse: Callback function for mouse events. See OpenCV samples on how to specify and use the callback.
  • userdata: The optional parameter passed to the callback.

C++ default parameters

  • userdata: 0