VC获取父进程PID

// tt.cpp : 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include <windows.h>

#include <stdio.h>

typedef enum enumSYSTEM_INFORMATION_CLASS

{

SystemBasicInformation,

SystemProcessorInformation,

SystemPerformanceInformation,

SystemTimeOfDayInformation,

}SYSTEM_INFORMATION_CLASS;

typedef struct tagPROCESS_BASIC_INFORMATION

{

DWORD ExitStatus;

DWORD PebBaseAddress;

DWORD AffinityMask;

DWORD BasePriority;

ULONG UniqueProcessId;

ULONG InheritedFromUniqueProcessId;

}PROCESS_BASIC_INFORMATION;

typedef LONG (WINAPI *PNTQUERYINFORMATIONPROCESS)(HANDLE,UINT,PVOID,ULONG,PULONG);

PNTQUERYINFORMATIONPROCESS NtQueryInformationProcess = NULL;

#define PRINT_LINE printf("---------------------------------------------\n")

int GetParentProcessID(DWORD dwId)

{

LONG status;

DWORD dwParentPID = 0;

HANDLE hProcess;

PROCESS_BASIC_INFORMATION pbi;

hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,dwId);

if(!hProcess)

return -1;

status = NtQueryInformationProcess(hProcess,SystemBasicInformation,(PVOID)&pbi,sizeof(PROCESS_BASIC_INFORMATION),NULL);

if(!status)

dwParentPID = pbi.InheritedFromUniqueProcessId;

CloseHandle (hProcess);

return dwParentPID;

}

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

{

NtQueryInformationProcess = (PNTQUERYINFORMATIONPROCESS)GetProcAddress(GetModuleHandle("ntdll"),"NtQueryInformationProcess");

if (!NtQueryInformationProcess)

return -1;

int nID = GetCurrentProcessId();

int nTemp = 0;

PRINT_LINE;

nTemp = GetParentProcessID(nID);

if(nTemp == -1)

{

printf(" 获取失败！\n");

return -1;

}

printf("进程：%lu ---->>>>>父进程PID为：%lu\n",nID,nTemp);

while (true)

{

nID = GetParentProcessID(nTemp);

if(nID == -1)

break;

printf("进程：%lu ---->>>>>父进程PID为：%lu\n",nTemp,nID);

nTemp = nID;

}

PRINT_LINE;

getchar();

return 0;

}