Re: ChildWindowFromPoint vagaries

ChildWindowFromPoint wants the value of the
POINT, not its address. That means putting the x and y
values right onto the stack.

This seems to work:

3 import: ChildWindowFromPoint ok
hwnd . 1948 ok
hwnd 1 1 ChildWindowFromPoint . 1940 ok
1940 GetParent . 1948 ok
hwnd 100 100 ChildWindowFromPoint . 1944 ok
1944 GetParent . 1948 ok
hwnd 200 200 ChildWindowFromPoint . 1944 ok
hwnd -1 -1 ChildWindowFromPoint . 0 ok

--
Bret
----- Original Message -----
From: "Robert Dickow" <dickow_at_uidaho.edu>
To: "SF Talk" <sftalk_at_forth.com>
Sent: Sunday, January 14, 2001 6:21 AM
Subject: [sftalk] ChildWindowFromPoint vagaries
> Has anybody played with the dll function ChildWindowFromPoint ?
> I call it this way, but it doesn't work:
>
> 2 import: ChildWindowFromPoint
> POINT builds MYPOINTSTRUCT  1 MYPOINTSTRUCT x ! 1 MYPOINTSTRUCT y !
> hMyWindow  MYPOINTSTRUCT addr  ChildWindowFromPoint  ( Crash! )
>
> I only get an INTEGER DIVIDE BY ZERO error. Now, there might be some
> confusion on my part or everybody's part, because the Windows docs claim
it
> needs two parameters but--after wandering around the web, I find a few
> references showing C code in which only the POINT structure address is
> passed. It doesn't matter though, because it doesn't work called with one
> parameter or two. SwForth simply won't execute when I try to.
>
> If anybody wants to know, I'm trying to subclass a couple of dropdown
> ComboBoxes in the toolbar of my application's window. So, if anybody can
see
> my error here, I'll send you a big Hug and a Kiss!
>
> Thanks, Bob
>
> **************************************************
> ** Bob Dickow, dickow_at_uidaho.edu **
> **  USDA Zone 5  -- Vive le cor ----     ***
> **************************************************
>
>
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