遍历进程的所有子进程

#include<stdio.h>
#include<TlHelp32.h>
#include <vector>
#pragma comment(lib,"Advapi32.lib")

typedef struct _SUBPROCESS_INFO
{
	DWORD Level;
	DWORD ProcessId;
	std::wstring ProcessName;
}SUBPROCESS_INFO, *PSUBPROCESS_INFO;


bool GetAllSubProcessId(DWORD Level,DWORD ProcessId,std::vector<PSUBPROCESS_INFO> * SubProcessList)
{
	PROCESSENTRY32W PE;
	memset(&PE, 0, sizeof(PROCESSENTRY32W));
	PE.dwSize = sizeof(PROCESSENTRY32W);

	auto hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
	if (hSnapshot == INVALID_HANDLE_VALUE)
	{
		return 0;
	}

	if (!Process32FirstW(hSnapshot, &PE))
	{
		CloseHandle(hSnapshot);
		return 0;
	}

	bool IsContinue = true;
	do
	{
		do
		{
			if (IsContinue ==false)
			{
				break;
			}
			if (PE.th32ProcessID <= 4)
			{
				break;
			}
			if (PE.th32ParentProcessID == ProcessId)
			{
				bool IsInList = false;
				for (auto i = SubProcessList->begin(); i != SubProcessList->end(); i++)
				{
					if ((*i)->ProcessId == PE.th32ProcessID)
					{
						IsContinue = false;
						IsInList = true;
						break;
					}
				}

				if (IsInList == false)
				{
					PSUBPROCESS_INFO SubprocessInfo = new SUBPROCESS_INFO;
					SubprocessInfo->ProcessId = PE.th32ProcessID;
					SubprocessInfo->Level = Level + 1;
					SubprocessInfo->ProcessName = PE.szExeFile;
					SubProcessList->push_back(SubprocessInfo);
				}
			}
		} while (false);
	} while (Process32NextW(hSnapshot, &PE));
	CloseHandle(hSnapshot);
	return true;
}

int main()
{
	std::vector<PSUBPROCESS_INFO> SubProcessList;

	PSUBPROCESS_INFO SubprocessInfo = new SUBPROCESS_INFO;
	SubprocessInfo->ProcessId = 7092;
	SubprocessInfo->Level = 0;
	SubprocessInfo->ProcessName = L"explorer.exe";
	SubProcessList.push_back(SubprocessInfo);

	//遍历三层子进程
	for (size_t i = 0; i < 3; i++)
	{
		std::vector<PSUBPROCESS_INFO> TmpList = SubProcessList;
		auto it = TmpList.begin();
		while (it !=  TmpList.end())
		{
			GetAllSubProcessId(i,(*it)->ProcessId, &SubProcessList);
			it++;
		}
	}

	auto it = SubProcessList.begin();
	while (it != SubProcessList.end())
	{
		printf("进程ID:%d Level:%d 进程名:%S n",(*it)->ProcessId, (*it)->Level, (*it)->ProcessName);
		it++;
	}
	getchar();
	return 0;
}

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