The class which the object belongs to needs to implement the IGroupManagerListener interface and the IGroupGetListListener interface.
m_pGroupManager = new XHGroupManager(this);
XHGroupManager::addGroupGetListListener(this);

/**
 * Get group list
 * @param pUserManager User information
 */
static void getGroupList(CUserManager* pUserManager)
{
	XHGroupManager::getGroupList();
}
"applyGetGroupListFin" callback function will be called after calling this method

/**
 * Get the user list of the specified group 
 * @param pUserManager Uer information
 * @param strGroupId groip ID
 */
static void getUserList(CUserManager* pUserManager, string strGroupId)
{
	XHGroupManager::getUserList(strGroupId);
}
"applyGetUserListFin" callback function will be called after calling this method

/**
 * Get the group list
 * @param pUserManager User information
 */
void getGroupList(CUserManager* pUserManager)
{
	list<CGroupInfo> groupInfoList;
	CInterfaceUrls::demoQueryImGroupList(m_pUserManager->m_ServiceParam.m_strUserId,groupInfoList);
	applyGetGroupListFin(groupInfoList);
}
/**
 * Get the user list of the specified group 
 * @param pUserManager User information
 * @param strGroupId group ID
 */
void getUserList(CUserManager* pUserManager, string strGroupId)
{
	CGroupMemoryInfo userList;
	CInterfaceUrls::demoQueryImGroupInfo(m_pUserManager->m_ServiceParam.m_strUserId, strGroupId, userList);
	applyGetUserListFin(userList);
}

/*
 * Add the callback function pointer after getting the group list
 * @param pChatroomGetListListener Callback function pointer
 */
static void addGroupGetListListener(IGroupGetListListener* pGroupGetListListener);
/*
 * Get the group list
 * @param pUserManager User information
 */
static void getGroupList();
/*
 * Get the list of group members
 * @param pUserManager User information
 * @param strGroupId group ID
 */
static void getUserList(string strGroupId);

/**
 * Create a group
 * @param groupName
 */
string createGroup(string groupName);

/**
 * Delete the group
 * @param groupID
 */
bool deleteGroup(string groupID);

/**
 * Add group members
 * @param groupID
 * @param memberIDs
 */
void addGroupMembers(string groupID, list<string> memberIDs);

/**
 * Delete group members
 * @param groupID
 * @param memberIDs
 */
void deleteGroupMembers(string groupID, list<string> memberIDs);

/**
 * Set the push switch
 * @param groupID
 * @param enable
 * @param callback
 */
void setPushEnable(string groupID, bool enable);

/**
 *Send a message
 * @param groupID
 * @param atUserIDs
 * @param Message
 * @return the message which will be sent to
 */
CIMMessage* sendMessage(string groupID, list<string> atUserIDs, string Message);

/**
 *Send an online message
 * @param groupID
 * @param atUserIDs
 * @param Message
 * @return the message which will be sent to
 */
CIMMessage* sendOnlineMessage(string groupID, list<string> atUserIDs, string Message);