[DUG] SetWindowPos HWND_TOPMOST

[Jeremy Coulter]

or....write your own dialogs :-)

jeremy

On Tue, Aug 24, 2010 at 10:32 AM, John Bird <johnkbird at paradise.net.nz>wrote:

>  Not just Delphi - its an ancient Windows problem AFAIK.   Even in Windows
> 7 I have seen a control panel applets puts a modal dialog behind the window
> - often the best solution is Windows+D  (show desktop) and go thru all
> windows with alt+Tab and usually the hidden modal dialog is found.
> Usually.
>
> John
>
>
>
> HI have seen this even happen in D2007 ! so I am not sure if it has been
> sorted in later Delphi versions. I have seen other Windows apps. Not written
> in Delphi Exhibit the same thing, so is it a Delphi thing, or a Windows
> thing?? P.s this happens on XP, Vista and Win7 that I have noticed.
>
>
>
> Jeremy
>
>
>
> *From:* delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz]
> *On Behalf Of *Ross Levis
> *Sent:* Friday, 20 August 2010 22:04
> *To:* 'NZ Borland Developers Group - Delphi List'
> *Subject:* [DUG] SetWindowPos HWND_TOPMOST
>
>
>
> I have a window in my app which needs to be set to stay on top of all
> others.  In D7, if a modal dialog is activated from this window such as a
> TOpenFile, it appears underneath the window.  I believe later versions of
> Delphi resolve this problem.
>
>
>
> I got around the issue by using SetWindowPos with HWND_NOTOPMOST just
> before the dialog is activated, and set it back again afterwards.
>
>
>
> This works well generally, but a few users have complained of the entire
> app hanging either before the dialog appears or after it closes.  I’ve
> noticed this maybe twice over the last few years using XP.
>
>
>
> Is this an XP bug or Delphi getting confused?
>
>
>
> Perhaps I should try a Application.ProcessMessages after the SetWindowsPos.
>
>
>
> Ross.
>
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