Re: Automatically run procedure after starting SDI Application

"David Ching" <>
Fri, 04 Aug 2006 17:15:24 GMT
"Ajay Kalra" <> wrote in message

I am not sure what you mean by OnShowWindow.

The MFC handler for WM_SHOWWINDOW. I handled this message, and when the
window is shown, I wanted to first cause my window to display, containing my
last cached data, and then start a lengthy task to update the cache. If I
did a PostMessage() to start the lengthy task, then my window did not update
until the task was done (I think the window showed only the background

But if I replaced PostMessage with a SetTimer(id, 0, NULL) and started the
lengthy task in my OnTimer() handler, then my window did indeed display
immediately my last cached data (prior to starting the lengthy task).

We used
PostThreadMessage(to main app) in OnInitInstance and it worked fine.

What do you mean by OnInitInstance()? I can't find mention of that in MSDN.

didnt mention it because PostMessage is superior. I still dont see why
this would not work. You should not get any painting issues. I will
give it a try and see what happens. I have a great dislike for timers
for something like this.

As I said before, I had used PostMessage for years from OnInitDialog() and
OnCreate(), and it worked fine - the window was displayed immediately prior
to the posted message being dispatched. But it flamoxed me when it didn't
work in OnShowWindow(). So I stumbled along and finally found a way to use
the timer to insure my window was painted first.

-- David

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