Re: Text window not displaying inside loop

From:

"Tom Serface" <tom.nospam@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 29 Jun 2007 15:18:47 -0700

Message-ID:

<6940C02C-27C1-4E59-87DA-2D8437FC34BA@microsoft.com>

oops hit wrong key... sorry:

//
// Release main thread for background processing
//
void GiveTime()
{
// Idle until the screen redraws itself, et. al.
MSG msg;
while (::PeekMessage( &msg, NULL, 0, 0, PM_NOREMOVE ) ) {
  if (!AfxGetThread()->PumpMessage( )) {
   ::PostQuitMessage(0);
   break;
  }
}
// let MFC do its idle processing
LONG lIdle = 0;
while (AfxGetApp()->OnIdle(lIdle++ ))
  ;
}

So in your example you could do something like:

CString Output;
while (CountDown--) {
     Output.Empty();

          // extract figures and format into Output

     m_DriveList.SetWindowText (Output); // display figures
    GiveTime(); // Allow UI to update
}

Tom

"Lilith" <lilith@dcccd.edu> wrote in message
news:q6va831t2ksp0o3ehdl643cggurail6cgn@4ax.com...

I have a utilty I'm in the process of writing for montoring the amount
of remaining space on a number of network drives. I'm adding
functionality to loop every X-seconds then checking the figures again.
Eventually these figures will be written to a file but for now I'm
trying to display them fresh on each loop to a text box.

CString Output;
while (CountDown--) {
Output.Empty();
.
. // extract figures and format into Output
.

m_DriveList.SetWindowText (Output); // display figures
Sleep (1000); // wait a second
}

In the current configuration this should accumulate the figures and
put them in Output. I can vouch that this is being done. My problem
is that the text window won't display until the while loop is
finished. Due to an earlier glitch, when I hadn't emptied Output at
the top of the loop, I could tell that the text was being placed in
the text box because I watched the vertical scroll bar react. But it
never displayed.

Is there something I need to do to force the display? Or is this
expected behavior?

--
TIA,
Lilith