Function gvr_controller_button_to_string

pub unsafe extern "C" fn gvr_controller_button_to_string(
    button: i32,
) -> *const c_char

Convenience to convert an connection state to string. The returned pointer is static and valid throughout the lifetime of the application.

@param button The gvr_controller_button to convert to string. @return A pointer to a string that describes the value.