On 15/02/2020 07:38, R.Wieser wrote:
> Dennis,
>
>> wxPython is not a "different version of Python". It is a /library/
>> used by Python, just as Tkinter is a library.
>
> My apologies, I'll look into it.
>
>> Probably easier to set up two shortcut icons
>
> :-) Yeah, I thought of that one too.  Clutters the desktop though, which is
> something I could do without.
>
> So, as the person I am I wanted to explore possible other solutions.   Using
> a modifier key is one of them*, and rather elegant if you ask me.
>

Unfortunately as has been pointed out, but not particularly clearly,
when invoking a desktop launcher icon you are not talking to the
application, you are talking to the window manager. And or a few other
apps like caja in MATE

Nothing you do inside the application is useful in this respect.


> *with part of my question being if the OS/shortcut has any support for it -
> which would be the best-and-easiest solution - but which it doesn't seem to
> have.

You have to customise the window manager.
https://github.com/mate-desktop/marco

is a top level place to start for the Marco windowing system used by
MATE desktops



--
Future generations will wonder in bemused amazement that the early
twenty-first century’s developed world went into hysterical panic over a
globally average temperature increase of a few tenths of a degree, and,
on the basis of gross exaggerations of highly uncertain computer
projections combined into implausible chains of inference, proceeded to
contemplate a rollback of the industrial age.

Richard Lindzen

--- SoupGate-Win32 v1.05