Type Alias TrackbarCallback

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

Callback function for Trackbar see cv::createTrackbar

Parameters

• pos: current position of the specified trackbar.
• userdata: The optional parameter.

Aliased Type

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

Variants

None

No value.

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

Some value of type T.