possible Nube question about system messages - please help

[mikelostcause]

Is there anyway to hold the base.WndProc(re f m) until after the Logout()
function finishes loading a webpage??

I'm working on shutting down an app that runs in the system tray, I have no
problems shutting down, but I have problems saving data first.

if the base.WndProc(re f m) is placed at the top, it closes, but the system
does not continue to shutdown and it does not save the data via the Logout()
funtion.
If the base.WndProc(re f m) is placed at the bottom, it closes correctly, but
doesn't seem to perform the Logout function, I don't believe that it is
waiting for the webpage to load.

protected override void WndProc(ref Message m)
{
//base.WndProc(re f m); ----------placed at the top position
switch(m.Msg)
{
case WM_SYSCOMMAND:

switch(m.WParam .ToInt32()){

case SC_SCREENSAVE:
Logout();
break;

case SC_MONITORPOWER :
Logout();
break;

default:
break;
}
break;

case WM_QUERYENDSESS ION:
this.flagBoolea n1 = true; //do i really want to shut down?
Logout();
break;

case WM_WTSSESSION_C HANGE:
this.flagBoolea n1 = true; //do i really want to shut down?
Logout();
break;

}
base.WndProc(re f m); // placed at the bottom position
}

the Logout() function consists of a call to a website.

my understanding of messages is not very good, and i haven't been able to
find a good way to learn about them.