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- Path: sparky!uunet!lax.pe-nelson.com!lax!twbrown
- From: twbrown@PE-Nelson.COM (Tom W. Brown)
- Newsgroups: comp.os.ms-windows.programmer.misc
- Subject: Re: Forced Update (WM_PAINT) of Window
- Message-ID: <729@lax.lax.pe-nelson.com>
- Date: 6 Jan 93 22:49:15 GMT
- References: <C0Fx4F.6Cs@ccu.umanitoba.ca>
- Sender: news@lax.pe-nelson.com
- Organization: PE-Nelson
- Lines: 37
-
- In article <C0Fx4F.6Cs@ccu.umanitoba.ca>, umwaletz@ccu.umanitoba.ca (James L. Waletzky) writes:
- |> I'm using Borland C++ 3.1 to create my app and here's the problem:
- |>
- |> I have this main window which contains about 20 children, with each
- |> child being a box containing a particular color. Up pops a dialog
- |> asking the user to respond to some questions and once this dialog
- |> disappears, I would like to update all of the children with their
- |> new colors (ie. force a WM_PAINT message).
- |>
- |> I thought all I had to do was Invalidate the parent window and call
- |> UpdateWindow, but this doesn't seem to work. I then tried Invalidating
- |> all of the children and calling UpdateWindow, but this didn't work
- |> either. Any ideas?
-
- Well, in general either approach should have worked. You may have to
- give us more detail. Here are some things to check:
-
- 1. If the parent window has WS_CLIPCHILDREN style then invalidating and
- repainting the parent will not affect the children.
-
- 2. Are you specifying TRUE or FALSE in the InvalidateRect() call for the
- bErase parameter -- try TRUE which will cause the entire window to be
- cleared with the background brush.
-
- 3. Check your logic for getting new colors from the dialog box into your
- application -- perhaps the repaint is happening but you haven't moved
- the new colors into the appropriate variables and the child windows
- are still using the old colors?
-
- Good luck!
-
-
- ----------------------------------------------------------------------------
- Tom Brown | "She turned me into a newt...
- PE Nelson Systems | ... I got better"
- twbrown@pe-nelson.com | Monty Python and the Holy Grail
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