I have an application that when it is locked I activate a password dialog.  I
trigger it by adding a message filter.
public class AuthenticationMessageFilter : IMessageFilter
  {
      private const int SC_RESTORE = 0xF120;
      private const int SC_MAXIMIZE = 0xF030;
      private const int WM_SYSCOMMAND = 0x112;

     public bool PreFilterMessage(ref Message m)
     {
        bool bKeepLocked = false;
        if (m.Msg == WM_SYSCOMMAND)
        {
           if ((int)m.WParam == SC_MAXIMIZE || (int)m.WParam == SC_RESTORE)
           {
              ...... here do the authentication
              }
           }
        }
     }

and activated through:

AuthenticationMessageFilter filter = new AuthenticationMessageFilter();
Application.AddMessageFilter(filter);

This code works great if you switch using either alt-tab or the task bar,
however when you use task manager switch to ---- I cannot for the life of me
figure out what message to trap.

So my question is how do I trap the switchTo message from task manager.

Thanks,
SwedeFlyer