Type Alias OpenGlDrawCallback 

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

Callback function defined to be called every frame. See cv::setOpenGlDrawCallback

Parameters

• userdata: The optional parameter.

Aliased Type

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

Variants

None

No value.

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

Some value of type T.