Re: Live Display in a Modal Dialog

From:
"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>
Newsgroups:
microsoft.public.vc.mfc
Date:
Fri, 16 Mar 2007 10:42:13 -0400
Message-ID:
<#gLlCm9ZHHA.4888@TK2MSFTNGP06.phx.gbl>
Ron H. wrote:

I have an application that uses a worker thread to handle some external
hardware. One of the things it does is collect a couple of data values. At a
point in the program, I need to have the user make a manual adjustment to
the external hardware and ai would like to pop up a modal dialog telling the
user the target value of a variable as well as the current value and allow
the user to make the adjustment until the two values match.

How do I display the current value in real time on the modal dialog? I
understand how to display a variable on the dialog but how do I make that
display a live display of the current value being saved by the worker thread
in the main program at say a 1 second update rate?


PostMessage from the worker thread to a window in the main thread.
Here's an example:

http://vcfaq.mvps.org/mfc/12.htm

Notice that this has wParam and lParam parameters than you can pass in
the message. If your data won't fit them, pass a pointer that you 'new'
in the worker thread and 'delete' in the main thread message handler.

--
Scott McPhillips [VC++ MVP]

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