1 // test__getinformation.cpp : 定义控制台应用程序的入口点。
  2 //
  3 
  4 #include "stdafx.h"
  5 #include <windows.h>
  6 #include <TlHelp32.h>
  7 
  8 #ifndef CONST
  9 #define CONST const
 10 #endif
 11 
 12 #ifndef IN
 13 #define IN
 14 #endif
 15 
 16 #ifndef OUT
 17 #define OUT
 18 #endif
 19 
 20 #ifndef INOUT
 21 #define INOUT
 22 #endif
 23 
 24 #ifndef OPTIONAL
 25 #define OPTIONAL
 26 #endif
 27 
 28 
 29 namespace TEST__GETINFORMATION
 30 {
 31 
 32     //获取当前进程id
 33     DWORD GetCurrentProcessId()
 34     {
 35         return ::GetCurrentProcessId();
 36     }
 37 
 38     //获取当前进行名称
 39     BOOL GetCurrentProcessName(INOUT LPTSTR szCurrentProcessName, IN DWORD cchCurrentProcessNameSize)
 40     {
 41         if (0 != ::GetModuleFileName(NULL, szCurrentProcessName, cchCurrentProcessNameSize))
 42         {
 43             return TRUE;
 44         }
 45         return FALSE;
 46     }
 47 
 48     //根据进程名称获取进程id（根据进程id可以用OpenProcess函数获取进程句柄，有了句柄就可以做任何事情了）
 49     BOOL GetProcessIdByName(IN LPTSTR szProcessName, IN DWORD cchProcessNameSize, OUT LPDWORD lpdwProcessId)
 50     {
 51         HANDLE hSnapshot = NULL;
 52         PROCESSENTRY32 stProcessInfor;
 53 
 54         hSnapshot = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
 55         if (INVALID_HANDLE_VALUE == hSnapshot) return FALSE;
 56         stProcessInfor.dwSize = sizeof(PROCESSENTRY32);
 57         if (FALSE == ::Process32First(hSnapshot, &stProcessInfor)) return FALSE;
 58         if (0 == ::lstrcmp(szProcessName, stProcessInfor.szExeFile))
 59         {
 60             *lpdwProcessId = stProcessInfor.th32ProcessID;
 61             return TRUE;
 62         }
 63         while (TRUE == ::Process32Next(hSnapshot, &stProcessInfor))
 64         {
 65             if (0 == ::lstrcmp(szProcessName, stProcessInfor.szExeFile))
 66             {
 67                 *lpdwProcessId = stProcessInfor.th32ProcessID;
 68                 return TRUE;
 69             }
 70         }
 71         return FALSE;
 72     }
 73 
 74     //根据进程id获取进程句柄
 75     HANDLE GetProcessHandleById(IN DWORD dwProcessId, IN DWORD dwDesiredAccess)
 76     {
 77         return ::OpenProcess(dwDesiredAccess, TRUE, dwProcessId);
 78     }
 79 
 80 }
 81 int _tmain(int argc, _TCHAR* argv[])
 82 {
 83     //获取当前进程id
 84     DWORD dwCurrentProcessId = TEST__GETINFORMATION::GetCurrentProcessId();
 85 
 86     //获取当前进行名称
 87     LPTSTR szCurrentProcessName = (LPTSTR)::HeapAlloc(::GetProcessHeap(), HEAP_ZERO_MEMORY, MAX_PATH*sizeof(TCHAR));
 88     if (NULL == szCurrentProcessName) return 0;
 89     BOOL bSuccess = TEST__GETINFORMATION::GetCurrentProcessName(szCurrentProcessName, MAX_PATH);
 90     ::HeapFree(::GetProcessHeap(), 0, szCurrentProcessName);
 91     szCurrentProcessName = NULL;
 92 
 93     //根据进程名称获取进程id（根据进程id可以用OpenProcess函数获取进程句柄，有了句柄就可以做任何事情了）
 94     LPTSTR szGoComProcessName = (LPTSTR)::HeapAlloc(::GetProcessHeap(), HEAP_ZERO_MEMORY, MAX_PATH*sizeof(TCHAR));
 95     LPTSTR szGoComFileName = TEXT("GoCom.exe");
 96     DWORD dwGoGcomProcessId = 0;
 97     ::wsprintf(szGoComProcessName, TEXT("%s"), szGoComFileName);
 98     bSuccess = TEST__GETINFORMATION::GetProcessIdByName(szGoComProcessName, MAX_PATH, &dwGoGcomProcessId);
 99     ::HeapFree(::GetProcessHeap(), 0, szGoComProcessName);
100     szGoComProcessName = NULL;
101 
102     //根据进程id获取进程句柄
103     HANDLE hProcessHandle = TEST__GETINFORMATION::GetProcessHandleById(dwGoGcomProcessId, PROCESS_ALL_ACCESS);
104     if (FALSE == hProcessHandle) return 0;
105     ::CloseHandle(hProcessHandle);
106 
107     return 0;
108 }