C++通过进程名查找指定进程pid

//查找进程
DWORD FindProcessByName(const wchar_t* _name)
{
	DWORD pid = 0;
	//查找进程
	STARTUPINFO st;
	PROCESS_INFORMATION pi;
	PROCESSENTRY32 ps;
	HANDLE hSnapshot;
	memset(&st, 0, sizeof(STARTUPINFO));
	st.cb = sizeof(STARTUPINFO);
	memset(&ps, 0, sizeof(PROCESSENTRY32));
	ps.dwSize = sizeof(PROCESSENTRY32);
	memset(&pi, 0, sizeof(PROCESS_INFORMATION));
	// 遍历进程 
	hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
	if (hSnapshot == INVALID_HANDLE_VALUE)
		return false;
	if (!Process32First(hSnapshot, &ps))
		return false;
	do {
		if (lstrcmp(ps.szExeFile, _name) == 0)
		{

			pid = ps.th32ProcessID;
			break;
			//printf("找到进程: %s\n", tszProcess);
		}
	} while (Process32Next(hSnapshot, &ps));
	CloseHandle(hSnapshot);
	return pid;
}

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