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Steamworks Documentation
ISteamClient Interface
Interface to create a new steam instance or to connect to an existing steam instance, whether it's in a different process or is local.

In most scenarios this is all handled automatically via SteamAPI_Init.
You'll only ever need to use these APIs if you have a more complex versioning scheme, or if you want to implement a multiplexed gameserver where a single process is handling multiple games at once with independent gameserver Steam IDs.

Member Functions

Member functions for ISteamClient are called through the global accessor function SteamClient().

BReleaseSteamPipe

bool BReleaseSteamPipe( HSteamPipe hSteamPipe );
NameTypeDescription
hSteamPipeHSteamPipeThe pipe to release.

Releases a previously created communications pipe.

NOT THREADSAFE - Ensure that no other threads are accessing Steamworks API when calling!

Returns: bool
true if the pipe was valid and released successfully; otherwise, false.

BShutdownIfAllPipesClosed

bool BShutdownIfAllPipesClosed();
Triggers global shutdown for the DLL if all pipes are closed.

Returns: bool

ConnectToGlobalUser

HSteamUser ConnectToGlobalUser( HSteamPipe hSteamPipe );
NameTypeDescription
hSteamPipeHSteamPipeThe connection pipe to connect with.

Connects to an existing global user, failing if none exists.

Used by the game to coordinate with the SteamUI.

NOT THREADSAFE - Ensure that no other threads are accessing Steamworks API when calling!

Returns: HSteamUser
The HSteamUser handle of the global user. Returns 0 upon failure if the pipe is invalid or there is no global user.

CreateLocalUser

HSteamUser CreateLocalUser( HSteamPipe *phSteamPipe, EAccountType eAccountType );
NameTypeDescription
phSteamPipeHSteamPipe *
eAccountTypeEAccountType

Create a steam user that won't be shared with anyone else. Only used by game servers.

NOT THREADSAFE - Ensure that no other threads are accessing Steamworks API when calling!

Returns: HSteamUser
A new handle to a SteamUser.

CreateSteamPipe

HSteamPipe CreateSteamPipe();
Creates a communication pipe to the Steam client.
NOT THREADSAFE - ensure that no other threads are accessing Steamworks API when calling

Returns: HSteamPipe

GetIPCCallCount

uint32 GetIPCCallCount();
Returns the number of IPC (Inter-Process Communication) calls made since the last time this function was called.

Used for perf debugging so you can understand how many IPC calls your game makes per frame. Each IPC call is at minimum a thread context switch if not a process switch so you want to be diligent and possibly rate control how often you do them.

Returns: uint32

GetISteamAppList

ISteamAppList * GetISteamAppList( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamAppList interface associated with the specified user handle, only available on specially registered apps.

A constant containing the current version of the interface is: "STEAMAPPLIST_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamAppList()

Returns: ISteamAppList *
A pointer to the implementation of SteamAppList associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamApps

ISteamApps * GetISteamApps( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamApps interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMAPPS_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamApps()

Returns: ISteamApps *
A pointer to the implementation of SteamApps associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamController

ISteamController * GetISteamController( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamController interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMCONTROLLER_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamController()

Returns: ISteamController *
A pointer to the implementation of SteamController associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamFriends

ISteamFriends * GetISteamFriends( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamFriends interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMFRIENDS_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamFriends()

Returns: ISteamFriends *
A pointer to the implementation of SteamFriends associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamGameServer

ISteamGameServer * GetISteamGameServer( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamGameServer interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMGAMESERVER_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamGameServer()

Returns: ISteamGameServer *
A pointer to the implementation of SteamGameServer associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamGameServerStats

ISteamGameServerStats * GetISteamGameServerStats( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamGameServerStats interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMGAMESERVERSTATS_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamGameServerStats()

Returns: ISteamGameServerStats *
A pointer to the implementation of SteamGameServerStats associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamGenericInterface

void * GetISteamGenericInterface( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves a generic interface associated with a user handle.

You should never need to use this under normal conditions.

Returns: void *
A pointer to an implementation of an interface associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamHTMLSurface

ISteamHTMLSurface * GetISteamHTMLSurface( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamHTMLSurface interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMHTMLSURFACE_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamHTMLSurface()

Returns: ISteamHTMLSurface *
A pointer to the implementation of SteamHTMLSurface associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamHTTP

ISteamHTTP * GetISteamHTTP( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamHTTP interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMHTTP_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamHTTP()

Returns: ISteamHTTP *
A pointer to the implementation of SteamHTTP associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamInventory

ISteamInventory * GetISteamInventory( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamInventory interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMINVENTORY_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamInventory()

Returns: ISteamInventory *
A pointer to the implementation of SteamInventory associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamMatchmaking

ISteamMatchmaking * GetISteamMatchmaking( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamMatchmaking interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMMATCHMAKING_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamMatchmaking()

Returns: ISteamMatchmaking *
A pointer to the implementation of SteamMatchmaking associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamMatchmakingServers

ISteamMatchmakingServers * GetISteamMatchmakingServers( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamMatchmakingServers interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMMATCHMAKINGSERVERS_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamMatchmakingServers()

Returns: ISteamMatchmakingServers *
A pointer to the implementation of SteamMatchmakingServers associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamMusic

ISteamMusic * GetISteamMusic( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamMusic interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMMUSIC_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamMusic()

Returns: ISteamMusic *
A pointer to the implementation of SteamMusic associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamMusicRemote

ISteamMusicRemote * GetISteamMusicRemote( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamMusicRemote interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMMUSICREMOTE_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamMusicRemote()

Returns: ISteamMusicRemote *
A pointer to the implementation of SteamMusicRemote associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamNetworking

ISteamNetworking * GetISteamNetworking( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamNetworking interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMNETWORKING_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamNetworking()

Returns: ISteamNetworking *
A pointer to the implementation of SteamNetworking associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamRemoteStorage

ISteamRemoteStorage * GetISteamRemoteStorage( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamRemoteStorage interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMREMOTESTORAGE_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamRemoteStorage()

Returns: ISteamRemoteStorage *
A pointer to the implementation of SteamRemoteStorage associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamScreenshots

ISteamScreenshots * GetISteamScreenshots( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamScreenshots interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMSCREENSHOTS_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamScreenshots()

Returns: ISteamScreenshots *
A pointer to the implementation of SteamScreenshots associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamUGC

ISteamUGC * GetISteamUGC( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamUGC interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMUGC_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamUGC()

Returns: ISteamUGC *
A pointer to the implementation of SteamUGC associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamUnifiedMessages

ISteamUnifiedMessages * GetISteamUnifiedMessages( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamUnifiedMessages interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMUNIFIEDMESSAGES_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamUnifiedMessages()

Returns: ISteamUnifiedMessages *
A pointer to the implementation of SteamUnifiedMessages associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamUser

ISteamUser * GetISteamUser( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamUser interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMUSER_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamUser()

Returns: ISteamUser *
A pointer to the implementation of SteamUser associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamUserStats

ISteamUserStats * GetISteamUserStats( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamUserStats interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMUSERSTATS_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamUserStats()

Returns: ISteamUserStats *
A pointer to the implementation of SteamUserStats associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamUtils

ISteamUtils * GetISteamUtils( HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamUtils interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMUTILS_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamUtils()

Returns: ISteamUtils *
A pointer to the implementation of SteamUtils associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

GetISteamVideo

ISteamVideo * GetISteamVideo( HSteamUser hSteamUser, HSteamPipe hSteamPipe, const char *pchVersion );
NameTypeDescription
hSteamUserHSteamUserThe user handle to get the interface from.
hSteamPipeHSteamPipeThe pipe to access the interface over.
pchVersionconst char *The version string that identifies the version of the interface that you receive.

Retrieves the ISteamVideo interface associated with the specified user handle.

A constant containing the current version of the interface is: "STEAMVIDEO_INTERFACE_VERSION"

You should never need to use this under normal conditions, it's usually functionally equivalent to calling the global accessor: SteamVideo()

Returns: ISteamVideo *
A pointer to the implementation of SteamVideo associated with the given HSteamUser.

Returns NULL if the any of the arguments are not valid.

ReleaseUser

void ReleaseUser( HSteamPipe hSteamPipe, HSteamUser hUser );
NameTypeDescription
hSteamPipeHSteamPipeThe connection pipe to remove the user over.
hUserHSteamUserThe user to remove.

Removes an allocated user.

NOT THREADSAFE - Ensure that no other threads are accessing Steamworks API when calling!

SetLocalIPBinding

void SetLocalIPBinding( uint32 unIP, uint16 usPort );
NameTypeDescription
unIPuint32The local IP to bind to.
usPortuint16The port to bind to.

Set the local IP and Port to bind to.

This must be set before calling CreateLocalUser!

SetWarningMessageHook

void SetWarningMessageHook( SteamAPIWarningMessageHook_t pFunction );
NameTypeDescription
pFunctionSteamAPIWarningMessageHook_tFunction pointer to the callback function.

Sets a warning message hook to receive SteamAPI warnings and info messages in a callback function.

The function prototype must match the definition in SteamAPIWarningMessageHook_t. This includes the extern "C" linkage and __cdecl calling convention.

'int nSeverity' is the severity; 0 for msg, 1 for warning. If you are running in through a debugger only warnings will be sent. If you add -debug_steamapi to the command-line then informational messages will also be sent.
'const char * pchDebugText' is the text of the message.
Callbacks will occur directly after the API function is called that generated the warning or message

Passing NULL will unhook.

Example:
extern "C" void __cdecl SteamAPIDebugTextHook( int nSeverity, const char *pchDebugText ) { ::OutputDebugString( pchDebugText ); if ( nSeverity >= 1 ) { // place to set a breakpoint for catching API errors int x = 3; x = x; } } void EnableWarningMessageHook() { SteamUtils()->SetWarningMessageHook( &SteamAPIDebugTextHook ); }

Typedefs

These are typedefs which are defined for use with ISteamClient.

NameBase typeDescription
HSteamPipeint32Handle to a communication pipe to the Steam client.
HSteamUserint32Handle to single instance of a steam user.

Constants

These are constants which are defined for use with ISteamClient.

NameTypeValueDescription
k_iClientAudioCallbacksint2400
k_iClientBluetoothManagerCallbacksint4800
k_iClientControllerCallbacksint2700
k_iClientDepotBuilderCallbacksint1400
k_iClientDeviceAuthCallbacksint3000
k_iClientFriendsCallbacksint800
k_iClientGameNotificationCallbacksint4300
k_iClientHTTPCallbacksint2100
k_iClientInventoryCallbacksint4700
k_iClientMusicCallbacksint3200
k_iClientNetworkDeviceManagerCallbacksint3100
k_iClientParentalSettingsCallbacksint2900
k_IClientProductBuilderCallbacksint3600
k_iClientRemoteClientManagerCallbacksint3300
k_iClientRemoteControlManagerCallbacksint3800
k_iClientRemoteStorageCallbacksint1300
k_iClientScreenshotsCallbacksint2200
k_iClientShortcutsCallbacksint3700
k_iClientUGCCallbacksint3400
k_iClientUnifiedMessagesCallbacksint2500
k_iClientUserCallbacksint900
k_iClientUtilsCallbacksint1600
k_iClientVideoCallbacksint4600
k_iClientVRCallbacksint4200
k_iSteam2AsyncCallbacksint1900
k_iSteamAppListCallbacksint3900
k_iSteamAppsCallbacksint1000
k_iSteamBillingCallbacksint400
k_iSteamContentServerCallbacksint600
k_iSteamControllerCallbacksint2800
k_iSteamFriendsCallbacksint300
k_iSteamGameCoordinatorCallbacksint1700
k_iSteamGameNotificationCallbacksint4400
k_iSteamGameServerCallbacksint200
k_iSteamGameServerItemsCallbacksint1500
k_iSteamGameServerStatsCallbacksint1800
k_iSteamGameStatsCallbacksint2000
k_iSteamHTMLSurfaceCallbacksint4500
k_iSteamMatchmakingCallbacksint500
k_iSteamMusicCallbacksint4000
k_iSteamMusicRemoteCallbacksint4100
k_iSteamNetworkingCallbacksint1200
k_iSteamScreenshotsCallbacksint2300
k_iSteamStreamClientCallbacksint3500
k_iSteamStreamLauncherCallbacksint2600
k_iSteamUserCallbacksint100Base values for callback identifiers, each callback must have a unique ID.
k_iSteamUserStatsCallbacksint1100
k_iSteamUtilsCallbacksint700
STEAMCLIENT_INTERFACE_VERSIONconst char *"SteamClient017"