A Couple of Wimp Issues

[Justin F]

> 2) Under the comment "Various Windows", there's
> 
>   Wimp_NoIcon = Wimp_W: -1;
> 
> which has me puzzled. It would make more sense (to me) if it were
> 
>   Wimp_NoIcon = Wimp_I: -1;
> 
> and in the next section of the file, as it would then provide an alternative
> meaningful name for Wimp_IconWindow in different contexts. I've often used
> Wimp_IconWindow in code when I really meant "No Icon".
> 
> Am I correct in thinking that this is a typo, or have I failed to spot what
> Wimp_NoIcon's purpose is as Wimp_W?

Wimp_SetCaretPosition takes r0 = -1 for the window handle to 'turn off and 
disown the caret', ie it is being sent to 'no icon'. This is distinct from 
setting the caret to the background window, or setting it to the top 
window, which are the other two uses of the Wimp_W with the value set to 
-1. Similarly Wimp_GetCaretPosition returns it in the block.

You might also want to review the messages for the clipboard or 
drag-and-drop protocol, as I suspect that they also have a similar 
meaning.

Probably adding a comment to this effect nearby might help :-)

-- 
Charles Justin Ferguson
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