How to prevent starting TaskManager in my Desktop?

I am creating a new Desktop in Windows XP/Vista and 7 using win32 API. This is more like having a secure Desktop and I don't want let any other application to be executed in that Desktop.

Well, in Windows XP if I press strg+shift+Esc or strg+alt+ent, in the Desktop which I created, I don't see the task manger on my Desktop but instead on the Default Desktop.

Well, that's ok, but in Windows Vista, doing the same I get the task man开发者_开发技巧ager in my Desktop where the user can start another application using File->New task (Run...) menu.

Here is my question, what is the best way to prevent task manager to be displayed in the desktop which I created or even prevent starting it?

1) using the registry key, 2) capturing the key strokes? 3) what else???

Thanks in advance! Gohlool

Group Policy is your friend. Here's how to disable it.

I assume you are calling CreateDesktop, if so, you should be able to lock down that desktop with a security descriptor that only allows access to your program

This probably isn't the best solution, but you could always monitor for task manager and close it

foreach (Process clsProcess in Process.GetProcesses()) {
        if (clsProcess.ProcessName.StartsWith("taskmgr"))
        {
            clsProcess.Kill();
            return true;
        }
    }

Code is in C#

rename taskman.exe to somthing else.