IDirectPlay8Peer::SetGroupInfo Method

Sets a block of data associated with a group, including the name of the group.

Calling this method generates a DPN_MSGID_GROUP_INFO message, which is sent to all the peers connected to the application.

Syntax

HRESULT SetGroupInfo(      
    const DPNID dpnid,
    DPN_GROUP_INFO *const pdpnGroupInfo,
    PVOID const pvAsyncContext,
    DPNHANDLE *const phAsyncHandle,
    const DWORD dwFlags
);

Parameters

dpnid

[in] Variable of type DPNID that specifies the identifier of the group whose data block will be modified.

pdpnGroupInfo

[in] Pointer to a DPN_GROUP_INFO structure that describes the group data to set. To change the values of the pwszName or pvData members, you must set the corresponding DPNINFO_NAME or DPNINFO_DATA flags in the dwInfoFlags member.

pvAsyncContext

[in] Pointer to the user-supplied context, which is returned in the pvUserContext member of the DPN_MSGID_ASYNC_OP_COMPLETE system message.

phAsyncHandle

[out] A DPNHANDLE. A value will be returned. However, Microsoft® DirectPlay® does not permit cancellation of this operation, so the value cannot be used.

dwFlags

[in] Flag that controls how this method is processed. The following flag can be set for this method:

DPNSETGROUPINFO_SYNC

Causes the method to process synchronously.

Return Value

Returns S_OK if this method is processed synchronously and is successful. By default, this method is run asynchronously and normally returns DPNSUCCESS_PENDING. It can also return one of the following error values.

DPNERR_INVALIDFLAGS	The flags passed to this method are invalid.
DPNERR_INVALIDGROUP	The group ID is not recognized as a valid group ID for this game session.

Remarks

Transmission of nonstatic information should be handled with the IDirectPlay8Peer::SendTo method because of the high cost of using the IDirectPlay8Peer::SetGroupInfo method.