Windows API之DuplicateHandle

　　BOOL WINAPI DuplicateHandle(
  　　__in          HANDLE hSourceProcessHandle,
  　　__in          HANDLE hSourceHandle,
  　　__in          HANDLE hTargetProcessHandle,
  　　__out         LPHANDLE lpTargetHandle,
  　　__in          DWORD dwDesiredAccess,
  　　__in          BOOL bInheritHandle,
 　　 __in          DWORD dwOptions
　　);

// ApiDuplicateHandleSource.cpp
#include 
#include 
#include 
#include 
#include using namespace std;

unsigned __stdcall thread (void * lpPragma);
HANDLE GetProcessHandle(LPCTSTR szName);

int main (void)
{
    HANDLE hThread = NULL;
    hThread = (HANDLE)_beginthreadex(NULL, 0, thread, NULL, 0, NULL);
    cout "My thread handle is "  endl;

    HANDLE hTarget = NULL;
    BOOL bSucc = FALSE;
    //你是不是想说这里的hThread与调用DuplicateHandle相关？
    bSucc = DuplicateHandle (GetCurrentProcess(),                            //当前进程的源进程句柄
                            hThread,                                         //当前进程中存在的线程资源句柄（内核对象）
                            GetProcessHandle(_T("ApiDuplicateHandle.exe")),  //目标进程的句柄
                            &hTarget,                                        //要得到的目的句柄(Out)
                            0,                                               //访问的方式
                            FALSE,                                           //得到的句柄能不能被得到的其的进程的子进程继承
                            DUPLICATE_SAME_ACCESS );                         //访问选项
    if (bSucc)
    {
        cout "句柄复制成功, 其句柄值为："  endl;
    }

    cin.get();
    return 0;
}

unsigned __stdcall thread (void * lpPragma)
{
    while (1)
    {
        Sleep (1000);
        cout "Please terminal me!"  endl;
    }

    return 0;
}

HANDLE GetProcessHandle(LPCTSTR szName)
{
    HANDLE hSanpshot = NULL;
    hSanpshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if ( INVALID_HANDLE_VALUE == hSanpshot )
    {
        return NULL;
    }

    PROCESSENTRY32 pe;
    BOOL bOk = FALSE;
    pe.dwSize = sizeof(pe);

    bOk = Process32First (hSanpshot, &pe);
    if (!bOk)
        return NULL;

    do 
    {
        if ( !_tcscmp (pe.szExeFile, szName) )
        {
            return OpenProcess (PROCESS_ALL_ACCESS, FALSE, pe.th32ProcessID);
        }
        bOk = Process32Next (hSanpshot, &pe);
    }
    while (bOk);

    return NULL;
}

// ApiDuplicateHandle.cpp
#include 
#include 
#include 
#include using namespace std;

int main (void)
{
    HANDLE hRecv = NULL;

    cout "请输入复制过来的句柄 : "  endl;
    cin >> hRecv;

    TerminateThread(hRecv, 0);

    cin.get();
    return 0;
}