> It must be the responsibility of the OS to prevent console users
> interacting with applications when the desktop is locked. No user
> process should ever be able to bypass the lock mechanism.
If we take a look to WinAPI help for, i.e. MessageBox, we see, that it
has a flag (WindowsNT only), called MB_SERVICE_NOTIFICATION:
(..) The caller is a service notifying the user of an event. The
function displays a message box on the current active desktop, even if
there is no user logged on to the computer (..)
So we can write a small test program:
---[ test.c ]---
#include <windows>
void main()
{
Sleep(3000); // Pause, to give you time to lock
// the computer
MessageBox(
NULL, // HWND, should be NULL
"Who cares if we are locked?", // Messagebox text
"Test", // Messagebox caption
MB_OK | MB_SERVICE_NOTIFICATION // Flags
);
}
and this gives a chance for almost any appl to communicate with user
on WinNT, even if the computer is locked.
Just my 0.02 Ls -
elfs,
Latvia
This archive was generated by hypermail 2b30 : Tue Mar 05 2002 - 20:12:10 PST