Function sdl2_sys::SDL_hid_read

source ยท 
pub unsafe extern "C" fn SDL_hid_read(
    dev: *mut SDL_hid_device,
    data: *mut c_uchar,
    length: usize,
) -> c_int
Expand description

Read an Input report from a HID device.

Input reports are returned to the host through the INTERRUPT IN endpoint. The first byte will contain the Report number if the device uses numbered reports.

\param dev A device handle returned from SDL_hid_open(). \param data A buffer to put the read data into. \param length The number of bytes to read. For devices with multiple reports, make sure to read an extra byte for the report number. \returns the actual number of bytes read and -1 on error. If no packet was available to be read and the handle is in non-blocking mode, this function returns 0.

\since This function is available since SDL 2.0.18.