> ## Documentation Index > Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt > Use this file to discover all available pages before exploring further. # multiplayer_manager_c > multiplayer_manager_c # multiplayer\_manager\_c ## Functions | Function | Description | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [XblMultiplayerEventArgsFindMatchCompleted](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsfindmatchcompleted) | Retrieves additional information for `XblMultiplayerEventType.FindMatchCompleted` multiplayer events. | | [XblMultiplayerEventArgsMember](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmember) | Retrieves additional information for `XblMultiplayerEventType::HostChanged` and `XblMultiplayerEventType::MemberPropertyChanged` events. | | [XblMultiplayerEventArgsMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmembers) | Retrieves additional information for `XblMultiplayerEventType::MemberJoined` and `XblMultiplayerEventType::MemberLeft` events. | | [XblMultiplayerEventArgsMembersCount](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmemberscount) | Retrieves additional information for `XblMultiplayerEventType::MemberJoined` and `XblMultiplayerEventType::MemberLeft` events. | | [XblMultiplayerEventArgsPerformQoSMeasurements](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsperformqosmeasurements) | Retrieves additional information for `XblMultiplayerEventType::PerformQosMeasurements` events. | | [XblMultiplayerEventArgsPropertiesJson](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargspropertiesjson) | Retrieves additional information for `XblMultiplayerEventType::MemberPropertyChanged` and `XblMultiplayerEventType::SessionPropertyChanged` events. | | [XblMultiplayerEventArgsXuid](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsxuid) | Retrieves additional information for `XblMultiplayerEventType::UserAdded`, `XblMultiplayerEventType::UserRemoved`, and `XblMultiplayerEventType::JoinLobbyCompleted` events. | | [XblMultiplayerManagerAutoFillMembersDuringMatchmaking](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerautofillmembersduringmatchmaking) | Indicates whether the game should auto-fill open slots during gameplay. | | [XblMultiplayerManagerCancelMatch](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagercancelmatch) | Cancels the match request on the server, if one exists. | | [XblMultiplayerManagerDoWork](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerdowork) | Maintains game state updates between the title and Multiplayer Manager (MPM). | | [XblMultiplayerManagerEstimatedMatchWaitTime](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerestimatedmatchwaittime) | Retrieves the estimated wait time, in seconds, to complete a matchmaking request in progress. | | [XblMultiplayerManagerFindMatch](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerfindmatch) | Submits a matchmaking request to the server. | | [XblMultiplayerManagerGameSessionActive](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionactive) | Indicates whether there is an active game session. | | [XblMultiplayerManagerGameSessionConstants](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionconstants) | Retrieves the session constants associated with the game session. | | [XblMultiplayerManagerGameSessionCorrelationId](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessioncorrelationid) | Retrieves the correlation handle for the game session. | | [XblMultiplayerManagerGameSessionHost](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionhost) | Retrieves member information for the host member in the game session. | | [XblMultiplayerManagerGameSessionIsHost](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionishost) | Indicates whether the specified user is the host for the game session. | | [XblMultiplayerManagerGameSessionMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionmembers) | Retrieves member information for the members in the game session. | | [XblMultiplayerManagerGameSessionMembersCount](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionmemberscount) | Retrieves the number of members in the game session. | | [XblMultiplayerManagerGameSessionPropertiesJson](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionpropertiesjson) | Retrieves the custom properties for the game session, as a JSON string. | | [XblMultiplayerManagerGameSessionSessionReference](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionsessionreference) | Retrieves the session reference for the game session. | | [XblMultiplayerManagerGameSessionSetProperties](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionsetproperties) | Sets the value of a custom property for the game session. | | [XblMultiplayerManagerGameSessionSetSynchronizedHost](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionsetsynchronizedhost) | Sets the host for the game session, using `XblMultiplayerSessionWriteMode::SynchronizedUpdate`. | | [XblMultiplayerManagerGameSessionSetSynchronizedProperties](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagergamesessionsetsynchronizedproperties) | Sets the value of a custom property for the game session, using `XblMultiplayerSessionWriteMode::SynchronizedUpdate`. | | [XblMultiplayerManagerInitialize](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerinitialize) | Initializes Multiplayer Manager (MPM). | | [XblMultiplayerManagerJoinability](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerjoinability) | Indicates which users can join your lobby session. | | [XblMultiplayerManagerJoinGame](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerjoingame) | Joins a game session, using the globally unique session name. | | [XblMultiplayerManagerJoinGameFromLobby](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerjoingamefromlobby) | Creates a new game session for the lobby session, or joins an existing game session if one exists for the lobby session. | | [XblMultiplayerManagerJoinLobby](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerjoinlobby) | Joins an XBOX user to a lobby session. | | [XblMultiplayerManagerLeaveGame](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerleavegame) | Leaves the game session, returning the XBOX user and all other local users to the lobby session. | | [XblMultiplayerManagerLobbySessionAddLocalUser](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionaddlocaluser) | Joins an XBOX user to the lobby session. | | [XblMultiplayerManagerLobbySessionConstants](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionconstants) | Retrieves the session constants associated with the lobby session. | | [XblMultiplayerManagerLobbySessionCorrelationId](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessioncorrelationid) | Retrieves the correlation handle for the lobby session. | | [XblMultiplayerManagerLobbySessionDeleteLocalMemberProperties](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessiondeletelocalmemberproperties) | Deletes a custom property from a local member of the lobby session. | | [XblMultiplayerManagerLobbySessionHost](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionhost) | Retrieves member information for the host member in the lobby session. | | [XblMultiplayerManagerLobbySessionInviteFriends](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessioninvitefriends) | Displays the standard XBOX UI, allowing the user to select friends or recent players and invite them to the game. | | [XblMultiplayerManagerLobbySessionInviteUsers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessioninviteusers) | Invites the specified users to the game without displaying additional UI. | | [XblMultiplayerManagerLobbySessionIsHost](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionishost) | Indicates whether the specified user is the host for the lobby session. | | [XblMultiplayerManagerLobbySessionLocalMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionlocalmembers) | Retrieves member information for the local members in the lobby session. | | [XblMultiplayerManagerLobbySessionLocalMembersCount](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionlocalmemberscount) | Retrieves the number of local members in the lobby session. | | [XblMultiplayerManagerLobbySessionMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionmembers) | Retrieves member information for the members in the lobby session. | | [XblMultiplayerManagerLobbySessionMembersCount](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionmemberscount) | Retrieves the number of members in the lobby session. | | [XblMultiplayerManagerLobbySessionPropertiesJson](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionpropertiesjson) | Retrieves the custom properties for the lobby session, as a JSON string. | | [XblMultiplayerManagerLobbySessionRemoveLocalUser](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionremovelocaluser) | Removes the local user from both the lobby session and game session. | | [XblMultiplayerManagerLobbySessionSessionReference](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionsessionreference) | Retrieves the session reference for the lobby session. | | [XblMultiplayerManagerLobbySessionSetLocalMemberConnectionAddress](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionsetlocalmemberconnectionaddress) | Sets the connection address for the local member. | | [XblMultiplayerManagerLobbySessionSetLocalMemberProperties](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionsetlocalmemberproperties) | Set a custom property for a local member to the specified JSON string. | | [XblMultiplayerManagerLobbySessionSetProperties](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionsetproperties) | Sets the value of a custom property for the lobby session. | | [XblMultiplayerManagerLobbySessionSetSynchronizedHost](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionsetsynchronizedhost) | Sets the host for the lobby session, using `XblMultiplayerSessionWriteMode::SynchronizedUpdate`. | | [XblMultiplayerManagerLobbySessionSetSynchronizedProperties](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerlobbysessionsetsynchronizedproperties) | Sets the value of a custom property for the lobby session, using `XblMultiplayerSessionWriteMode::SynchronizedUpdate`. | | [XblMultiplayerManagerMatchStatus](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagermatchstatus) | Provides the current status of matchmaking. | | [XblMultiplayerManagerMemberAreMembersOnSameDevice](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagermemberaremembersonsamedevice) | Determines whether two members are on the same device. | | [XblMultiplayerManagerSetAutoFillMembersDuringMatchmaking](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagersetautofillmembersduringmatchmaking) | Sets if matchmaking should auto fill open slots during gameplay. This can be changed anytime. | | [XblMultiplayerManagerSetJoinability](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagersetjoinability) | Restricts who can join the game. | | [XblMultiplayerManagerSetQosMeasurements](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagersetqosmeasurements) | Sets json representing QoS measurements between the current user and a list of remote clients. This is only used when the title is manually managing QoS. | ## Structures | Structure | Description | | ------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [XblMultiplayerConnectionAddressDeviceTokenPair](/reference/live/xsapi-c/multiplayer_manager_c/structs/xblmultiplayerconnectionaddressdevicetokenpair) | A connection address/device token pair to run QoS measurements on. | | [XblMultiplayerEvent](/reference/live/xsapi-c/multiplayer_manager_c/structs/xblmultiplayerevent) | A multiplayer event that is returned from [XblMultiplayerManagerDoWork](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerdowork). | | [XblMultiplayerManagerMember](/reference/live/xsapi-c/multiplayer_manager_c/structs/xblmultiplayermanagermember) | Represents a reference to a member in a multiplayer game. | | [XblMultiplayerPerformQoSMeasurementsArgs](/reference/live/xsapi-c/multiplayer_manager_c/structs/xblmultiplayerperformqosmeasurementsargs) | Event arguments returned for `XblMultiplayerEventType::PerformQosMeasurements` events. | ## Handles | Handle | Description | | -------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------- | | [XblMultiplayerEventArgsHandle](/reference/live/xsapi-c/multiplayer_manager_c/handles/xblmultiplayereventargshandle) | A handle to multiplayer event arguments that can be used to retrieve additional information for a multiplayer event, depending on the type of event. | ## Enumerations | Enumeration | Description | | ---------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [XblMultiplayerEventType](/reference/live/xsapi-c/multiplayer_manager_c/enums/xblmultiplayereventtype) | Defines values used to indicate event types for a multiplayer lobby or game. The XblMultiplayerEventArgsHandle can be used to get additional information about the event depending on the event type. | | [XblMultiplayerJoinability](/reference/live/xsapi-c/multiplayer_manager_c/enums/xblmultiplayerjoinability) | Defines values used to indicate who can join your lobby. | | [XblMultiplayerMatchStatus](/reference/live/xsapi-c/multiplayer_manager_c/enums/xblmultiplayermatchstatus) | Defines values used to indicate status for the matchmaking stages. | | [XblMultiplayerSessionType](/reference/live/xsapi-c/multiplayer_manager_c/enums/xblmultiplayersessiontype) | Defines values used to indicate types for multiplayer sessions. | ## Related topics - [XblMultiplayerManagerInitialize](/ko/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerinitialize.md) - [XblMultiplayerManagerMember](/ko/reference/live/xsapi-c/multiplayer_manager_c/structs/xblmultiplayermanagermember.md) - [XblMultiplayerManagerJoinability](/ko/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerjoinability.md) - [XblMultiplayerManagerJoinLobby](/ja-jp/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerjoinlobby.md) - [XblMultiplayerManagerLeaveGame](/ja-jp/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagerleavegame.md)