🚀 go-pugleaf

"Kris" <ks@ks.com> wrote in message 
news:47c02cfe$1@newsgroups.borland.com...

> Well, I assumed that the best time to create the icon is when my 
> application starts.

Yes, that is fine.  But that does no necessarily mean that you are starting 
your app at the right time.  There are several different places in Windows' 
startup where user apps can be loaded automatically.  When exactly are you 
starting your app?

> This is where I attempt to create my icon during startup:

I would suggest overriding the TForm's virtual CreateWnd() and DestroyWnd() 
methods instead of using the constructor.  Issue NIM_ADD in CreateWnd() and 
in response to "TaskbarCreated" message.  Issue NIM_REMOVE in DestroyWnd(). 
Issue NIM_MODIFY when changing the icon.

> I'm setting it up as soon as possible (during WM_CREATE)

That may be too late, depending on when the TForm's HWND is actually 
created.  I would suggest calling RegisterWindowMessage() as soon as 
possible (in the TForm's constructor, or better in WinMain() directly).  You 
do not need to use WM_CREATE at all.

>       if (Message.Msg==WM_TASKBARCREATED)

Make sure you check for 0 as well, in case RegisterWindowMessage() failed. 
0 means WM_NULL, which the VCL uses for other purposes:

    if( (Message.Msg==WM_TASKBARCREATED) && (WM_TASKBARCREATED != 0) )


Gambit