Windows Share feature

Use the SendMessage method and pass in FriendReqInfo to implement the share feature.For callback information, refer to Unity callback / Unreal callback.

Steam

Use the invitation string to invite friends to join the game.After a friend accepts the invitation, pchConnectString will be added to the launch command line.

Implementation Steps:

1. Call QueryFriends to obtain friends' Steam OpenID
2. Call SendMessage, and set:
   • User: friend's OpenID
   • Description: invitation string pchConnectString

Unity

var friendInfo = new INTLFriendReqInfo();
friendInfo.Type = INTLFriendReqType.Friend_REQ_INVITE;
friendInfo.User = "123214"; // friend's OpenID
friendInfo.Description = "abc"; // invitation string
INTLAPI.SendMessage(friendInfo, INTLChannel.Steam);

Unreal Engine

FINTLFriendReqInfo friendReqInfo;
friendReqInfo.Type = EINTLFriendReqType::kReqInvite;
friendReqInfo.User = "123214"; // friend's OpenID
friendReqInfo.Description = "abc"; // invitation string
UINTLSDKAPI::SendMessage(friendReqInfo, EINTLLoginChannel::kChannelSteam);

Error Code

Error Codes	Description
1031	Steam DLL loading failed
1032	The game needs to be launched from the Steam platform
1033	Steam initialization failed (check the location of steam_appid.txt or whether Steam is running)