Function CVDisplayLinkSetOutputHandler

pub unsafe extern "C-unwind" fn CVDisplayLinkSetOutputHandler(
    display_link: &CVDisplayLink,
    handler: CVDisplayLinkOutputHandler,
) -> CVReturn

👎Deprecated: use NSView.displayLink(target:selector:), NSWindow.displayLink(target:selector:), or NSScreen.displayLink(target:selector:)

Available on crate features CVBase and CVReturn and block2 and CVDisplayLink only.

Set the renderer output callback block

The DisplayLink will invoke this block whenever it wants you to output a frame. You can only have a block or a callback function; not both.

Parameter displayLink: target CVDisplayLinkRef

Parameter handler: CVDisplayLinkOutputHandler block

Returns: CVReturn. kCVReturnSuccess if successful.