Struct Params 

#[repr(C)]
pub struct Params {
    pub handler_func: extern "C" fn(data: *const u8, ptr: *mut u8, width: isize, height: usize),
    pub handler_data: *const u8,
}

Parameters of capture

Fields

handler_func: extern "C" fn(data: *const u8, ptr: *mut u8, width: isize, height: usize)

Callback when the capture process succeeded.

The handler is called at most once. The result of the capture is encoded as follows:

• width is positive for a successful capture. The pointer is allocated by the scheduler and contains the image (length is the product of width and height).

• width is negative for errors. The pointer is null and height is zero.

The handler is unregistered before being called, such that the handler may trigger another capture.

handler_data: *const u8

Trait Implementations

impl Clone for Params

fn clone(&self) -> Params

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Params

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for Params