Type Alias MouseCallback 

pub type MouseCallback = Option<Box<dyn FnMut(i32, i32, i32, i32) + Send + Sync + 'static>>;

Callback function for mouse events. see cv::setMouseCallback

Parameters

• event: one of the cv::MouseEventTypes constants.
• x: The x-coordinate of the mouse event.
• y: The y-coordinate of the mouse event.
• flags: one of the cv::MouseEventFlags constants.
• userdata: The optional parameter.

Aliased Type

pub enum MouseCallback {
    None,
    Some(Box<dyn FnMut(i32, i32, i32, i32) + Send + Sync>),
}

Variants

None

No value.

Some(Box<dyn FnMut(i32, i32, i32, i32) + Send + Sync>)

Some value of type T.