Function steamworks_sys::SteamAPI_ISteamFriends_GetFriendMessage

pub unsafe extern "C" fn SteamAPI_ISteamFriends_GetFriendMessage(
    self_: *mut ISteamFriends, 
    steamIDFriend: uint64_steamid, 
    iMessageID: c_int, 
    pvData: *mut c_void, 
    cubData: c_int, 
    peChatEntryType: *mut EChatEntryType
) -> c_int