Generate Keyboard event

Hi,

I want to create a keyboard event from within a service to long to Windows NT. Therefore I need to simulate Ctrl-Alt-Del.

keydb_event(VK_MENU, 0, 0, 0);
keydb_event(VK_CONTROL, 0, 0, 0);
keydb_event(VK_DELETE, 0, 0, 0);
keydb_event(VK_DELETE, 0, KEYEVENTF_KEYUP, 0);
keydb_event(VK_CONTROL, 0, KEYEVENTF_KEYUP, 0);
keydb_event(VK_MENU, 0, KEYEVENTF_KEYUP, 0);

does not work.

Any ideas?

Regards,

Bernd