🚀 go-pugleaf

In article <4441b70a$1@newsgroups.borland.com>, TonyD wrote:
> If this is the wrong forum, please kindly direct me to the proper one.

If you are talking about a .NET Application the group is OK.
> 
> How can I bring a MDIChild window to the top?  I have a tool bar which when 
> a relative button is clicked it creates the form and then uses the Show 
> event.  I would like to bring the form the the top if the button is clicked 
> again.  When I use the BringToFront method I get an abstract error.
> 
> Project MyApp raised exception class EAbstractError with message 'Abstract 
> Error'.
> Process stopped.  Use Step or Run to continue.
> 
> [Code]
> var
>   frmNHList: TfrmNHList;
> begin
>   { create a new MDI child window if not already }
>   if not IsMDIChildOpen(MainForm, 'frmNHList') then
>     begin
>       frmNHList := TfrmNHList.Create(Application);
>       frmNHList.Show;
>     end;
>     frmNHList.BringToFront;  // if already created and showing, bring to 
> front

Your code contains an error. When the IsMDIChildOpen method returns true
the found MDI child will not be assigned to the frmNHLIst local variable, so 
your call to bringtofront executes on an uninitialized form reference.


--
Peter Below (TeamB)  
Don't be a vampire (http://slash7.com/pages/vampires), 
use the newsgroup archives :
http://www.tamaracka.com/search.htm
http://groups.google.com
http://www.prolix.be