BOOL WINAPI  EnumProcesses (

                             _Out_writes_bytes_(cb) DWORD * lpidProcess,

                             _In_ DWORD cb,

                             _Out_ LPDWORD lpcbNeeded

                            );

HANDLE OpenProcess(

                    DWORD dwDesiredAccess,  // access flag

                    BOOL bInheritHandle,    // handle inheritance option

                    DWORD dwProcessId       // process identifier

                   );

BOOL WINAPI QueryFullProcessImageNameA(

    _In_ HANDLE hProcess,

    _In_ DWORD dwFlags,

    _Out_writes_to_(*lpdwSize, *lpdwSize) LPSTR lpExeName,

    _Inout_ PDWORD lpdwSize

    );

函数使用起来都比较方便，参数不说了，需要注意使用EnumProcess要包涵#include <Psapi.h>，以及对应的导入库lib

具体代码示例如下：

#include "stdafx.h"

#include <Windows.h>

#include <string>

#include <Psapi.h>

#pragma comment (lib, "Psapi.lib")

using namespace std;

int _tmain(int argc, _TCHAR* argv[])

{

	DWORD dwProcessID[0x500] = { 0 };  //开始的预先分配较大的缓冲区，用来存放进程ID

	DWORD dwNeeded = 0;

	BOOL bEnumRes = EnumProcesses(dwProcessID, sizeof(dwProcessID), &dwNeeded);

	UINT uCount = dwNeeded / sizeof(DWORD);//获得枚举到进程的数量

	for (UINT i = 0; i < uCount; i++)

	{ 

               //只对进程进程枚举，所以申请QUERY权限，具体还得根据应用申请权限

		HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, dwProcessID[i]);

		if (NULL !=hProcess)

		{

			CHAR szProcessName[0x50] = { 0 };

			DWORD dwNameLen = 0x50;

			BOOL bRet = QueryFullProcessImageNameA(hProcess, 0, szProcessName, &dwNameLen);

			if (bRet)

			{

				printf("ID:%4d\tprocessName(%s)\n", dwProcessID[i], szProcessName);

			}

		}

	}

	getchar();

	return 0;

}