RegCloseKey(hKey);

    return (r == ERROR_SUCCESS ? 1 : 0);
}

/*****************************************************************
 * Enable/Disable Ctrl+Alt+Del and Ctrl+Shift+Esc key sequences. *
 * TRUE=Enable, FALSE=Disable                                    *
 * (Win 2K).                                                     *
 *****************************************************************/
int CtrlAltDel_Enable_Disable(BOOL bEnableDisable)
{
 static BOOL bInjected = FALSE;

    if (!bEnableDisable)
    {
  if (!bInjected)
  {
   bInjected = Inject();
   return bInjected;
  }
    }
    else
    {
  if (bInjected)
  {
   bInjected = !Eject();
   return !bInjected;
  }
    }

    return 0;
}

如果需要隐藏任务栏，请检查是否打开自动隐藏任务栏功能。

if(SHAppBarMessage(ABM_GETSTATE, ABData)&ABS_AUTOHIDE) > 0
        SHAppBarMessage(ABM_SETAUTOHIDEBAR, ABData);