CMEMB.CPP

//**************************************************************************** 
//  Module:     NMSHARE.EXE      
//  File:       CMEMB.CPP 
//  Content:     
//               
// 
//  Copyright (c) Microsoft Corporation 1997 
// 
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF  
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO  
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A  
// PARTICULAR PURPOSE. 
//**************************************************************************** 
 
#include "precomp.h" 
 
COBLIST * g_pListUser = (COBLIST *) NULL; 
 
 
//**************************************************************************** 
// 
// PUSER PUserFromINmMember(INmMember * pMember) 
// 
//**************************************************************************** 
 
PUSER PUserFromINmMember(INmMember * pMember) 
{ 
if (NULL != g_pListUser) 
{ 
POSITION pos = g_pListUser->GetHeadPosition(); 
while (NULL != pos) 
{ 
PUSER pUser = (PUSER) g_pListUser->GetNext(pos); 
if (pMember == pUser->pMember) 
{ 
ASSERT(pMember == pUser->pMember); 
return pUser; 
} 
} 
} 
 
return NULL; 
} 
 
 
//**************************************************************************** 
// 
// int ItemFromPUser(PUSER pUser) 
// 
//**************************************************************************** 
 
int ItemFromPUser(PUSER pUser) 
{ 
if (NULL == ghwndUser) 
return -1; 
 
LV_FINDINFO findInfo; 
ClearStruct(&findInfo); 
findInfo.flags = LVFI_PARAM; 
    findInfo.lParam = (LPARAM) pUser;  
    return ListView_FindItem(ghwndUser, -1, &findInfo); 
} 
 
 
//**************************************************************************** 
// 
// PUSER AllocUser(INmMember * pMember) 
// 
//**************************************************************************** 
 
PUSER AllocUser(INmMember * pMember) 
{ 
HRESULT hr; 
BSTR bstr; 
 
PUSER pUser = new USER; 
if (NULL == pUser) 
{ 
return NULL; 
} 
ClearStruct(pUser); 
 
pUser->pMember = pMember; 
pMember->AddRef(); 
 
hr = pMember->GetName(&bstr); 
if (SUCCEEDED(hr)) 
{ 
pUser->pszName = PszFromBstr(bstr); 
SysFreeString(bstr); 
} 
 
return pUser; 
} 
 
 
//**************************************************************************** 
// 
// VOID FreeUser(PUSER pUser) 
// 
//**************************************************************************** 
 
VOID FreeUser(PUSER pUser) 
{ 
ASSERT(NULL != pUser); 
 
FreePlpv(&pUser->pszName); 
 
if (NULL != pUser->pMember) 
{ 
pUser->pMember->Release(); 
} 
} 
 
VOID FreeAllUsers(void) 
{ 
if (NULL != g_pListUser) 
{ 
while (!g_pListUser->IsEmpty()) 
{ 
RemoveMember(((PUSER) g_pListUser->GetHead())->pMember); 
} 
} 
} 
 
 
//**************************************************************************** 
// 
// VOID AddMember(INmMember * pMember) 
// 
//**************************************************************************** 
 
VOID AddMember(INmMember * pMember) 
{ 
PUSER pUser = AllocUser(pMember); 
if (NULL == pUser) 
{ 
return; 
} 
 
AddNode(pUser, &g_pListUser); 
 
LV_ITEM  lvItem; 
ClearStruct(&lvItem); 
lvItem.iItem = g_pListUser->GetItemCount(); 
lvItem.mask = LVIF_PARAM | LVIF_TEXT; 
lvItem.pszText = pUser->pszName; 
lvItem.cchTextMax = lstrlen(pUser->pszName); 
lvItem.lParam = (LPARAM) pUser; 
ListView_InsertItem(ghwndUser, &lvItem); 
 
{ 
TCHAR szMsg[MAX_PATH]; 
wsprintf(szMsg, TEXT("%s joined"), pUser->pszName); 
DisplayMsg(szMsg); 
} 
} 
 
 
//**************************************************************************** 
// 
// VOID RemoveMember(INmMember * pMember) 
// 
//**************************************************************************** 
 
VOID RemoveMember(INmMember * pMember) 
{ 
if (NULL == g_pListUser) 
return; 
 
POSITION pos = g_pListUser->GetHeadPosition(); 
while (NULL != pos) 
{ 
POSITION posSav = pos; 
PUSER pUser = (PUSER) g_pListUser->GetNext(pos); 
if (pMember == pUser->pMember) 
{ 
TCHAR szMsg[MAX_PATH]; 
wsprintf(szMsg, TEXT("%s left"), pUser->pszName); 
DisplayMsg(szMsg); 
 
ListView_DeleteItem(ghwndUser, ItemFromPUser(pUser)); 
FreeUser(pUser); 
g_pListUser->RemoveAt(posSav); 
return; 
} 
} 
}