bug#3468: drag and drop text

[Cecilio Pardo <cpardo@imayhem.com>]

On 29/09/2024 9:19, Eli Zaretskii wrote:

>> +  if (files->fWide)
> 
> What determines whether we get "wide" file names or ANSI file names?
> We want to get "wide" file names where possible, but I don't see where
> we request that?

We can't request it, I suppose it depends on the OS version or the 
program sending the drop.

> If this runs in a non-main thread, then we cannot do this: calling
> functions that manipulate Lisp data in non-main threads is a no-no.
> Can we instead delegate the actual processing to where
> WM_EMACS_DROPSTRING is processed?  If not, why not?

It runs indeed on the "shell thread". I'll move all the processing to 
the message handler.

Thanks a lot for your review, and sorry for all the style mistakes.