🚀 go-pugleaf

Ok I figured it out.  It was something along those lines.  I was not setting 
the Visible property but I was doing this:

void __fastcall TMyForm::FormActivate(TObject *Sender)
{
    if (some error condition)
    {
        exit(0);
    }
}

I suspect that since "exit" cause the app to close (and thus the visibility 
to change), this triggers that error message.
"Steve" <sdardari_NOSPAM_@rimini.com> wrote in message 
news:4301cb34$1@newsgroups.borland.com...
>
> HI Michael,
>
>> Hello all,
>> I'm using C Builder 6 and I have an app that runs fine in the ide or on 
>> the same machine it was compiled on.  I compile it statically; and 
>> install the ocx that it needs.  When I run the app on another machine I 
>> get the error message "Cannot change Visible in OnShow or OnHide".  Am I 
>> missing something?  What do I need to install to get the app to run.
>
> Probably you try to use Form->Visible inside an Form->OnShow or 
> Form->OnHide event ?
>
> Sometimes I've same problem (error) with one my application, but I've to 
> call the winapi ShowWindow(Application->Handle, SW_HIDE), to show/hide the 
> mainform button-window in the start-bar area, because in that case, my app 
> is iconified on the icontray and MainForm is not showed until a 
> doubleclick on the trayicon.
>
> To solve try to check your code in the OnShow - OnHide Form event ... I 
> think you can start from here.
>
> If you discover something of intresting let know us!
>
> Bye,
> Steve
>
>