[−][src]Function battery_ffi::battery_last_error_message
#[no_mangle]pub unsafe extern "C" fn battery_last_error_message(
buffer: *mut c_char,
length: c_int
) -> c_int
Fills passed buffer with an error message.
Buffer length can be get with battery_last_error_length function.
Returns
Returns -1
is passed buffer is NULL
or too small for error message.
Returns 0
if there was no error previously.
In all other cases returns error message length.