互斥，游戏多开源码，针对目前90%的游戏。

shark231

1.   
   
2. 
   
3.   HMODULE hNtDll = NULL;
   
4.   ZWQUERYSYSTEMINFORMATION pfnZwQuerySystemInformation = NULL;
   
5.   NTQUERYOBJECT pfnNtQueryObject = NULL;
   
6.   PSYSTEM_HANDLE_INFORMATION pSysHandleInfo = NULL;
   
7.   POBJECT_ALL_INFORMATION pAllInfo =NULL;
   
8.   POBJECT_NAME_INFORMATION pNameInfo = NULL;
   
9. 
   
10.   ULONG nNumberHandle =0;
    
11.   NTSTATUS ntStatus = 0;
    
12.   ULONG ulSize,ulCount;
    
13.   char cBuffer[0x80000],cInfoBuffer[0x10000];
    
14. 
    
15.   hNtDll = GetModuleHandle(TEXT("ntdll.dll"));
    
16.   pfnZwQuerySystemInformation = (ZWQUERYSYSTEMINFORMATION)GetProcAddress(hNtDll,"ZwQuerySystemInformation");
    
17.   pfnNtQueryObject = (NTQUERYOBJECT)GetProcAddress(hNtDll,"NtQueryObject");
    
18. 
    
19.   ntStatus = pfnZwQuerySystemInformation(SystemHandleInformation,cBuffer,0x80000,&ulSize);
    
20. 
    
21.    if(NT_SUCCESS(ntStatus))
    
22.    {
    
23.    DWORD n = ulSize/sizeof(SYSTEM_HANDLE_INFORMATION);
    
24.    nNumberHandle = *(PULONG)cBuffer;
    
25.    pSysHandleInfo = (PSYSTEM_HANDLE_INFORMATION)(cBuffer +4);
    
26.    ulCount = 0;
    
27. 
    
28.      for(ULONG i=0;i!=nNumberHandle;++i)
    
29.   {
    
30. 
    
31.          if(pSysHandleInfo.ProcessId != ProcessId) continue;
    
32.          ntStatus = pfnNtQueryObject((HANDLE)pSysHandleInfo.Handle,ObjectAllInformation,cInfoBuffer,0x10000,&ulSize);
    
33.          ntStatus = pfnNtQueryObject((HANDLE)pSysHandleInfo.Handle,ObjectNameInformation,cInfoBuffer,0x10000,&ulSize);
    
34.            if(NT_SUCCESS(ntStatus))
    
35.      {
    
36.            pAllInfo = (POBJECT_ALL_INFORMATION)cInfoBuffer;
    
37.            pNameInfo = (POBJECT_NAME_INFORMATION)cInfoBuffer;
    
38.                  if(_tcsstr(pNameInfo->NameBuffer,TEXT("QQGame_Mutex03/01/2003")) !=NULL)
    
39.      {
    
40.                  return (HWND)pSysHandleInfo.Handle;
    
41.      }
    
42.      }
    
43.   }
    
44.    }  
    
45. return NULL;  
    
46. hMuTex = GetProcessKernelObject(GetCurrentProcessId());
    
47. CloseHandle(hMuTex);
    
48. 
    

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原理,因为许多限制多开的软件都是利用命名内核对象来实现的，如果Create* 创建内核对象 返回 “以存在”那么就退出。
所以，先枚举进程中的所有内核对象，然后关闭他就好了~ 在R3下实现，用此方法可以多开大多数程序包括将来的。