??? You do you mean they are not supported, but yet they work.
They insert and they save in the RTF file perfectly fine
What do you mean they are not supporter?
RichMemo is based on the
system rich-text control. (unlike KMemo, which was written from scratch)
Each
system rich-text control has its particular features. (i.e. Linux control doesn't have "undo" out of the box. So doesn't mac, but adding one on mac is easier)
Now, if you try the same code as you've right now, on Windows XP, 7 or Vista, it might NOT produce the result you're getting now on Windows 10. (images might be missing, formatting might be different. etc)
Because system-rich-edit control on prior versions of Windows is acting
differently, than the one on Windows 10.
If you don't want to fix it, fine, just say so.
Maybe read-only issue will be fixed, with Windows 11 or the next Windows 10 update. Who knows.
Oh, you can try to work-around that by suppressing all key events.
(add OnKeyDown handler, and assign KeyCode to 0). In that case you'll get somewhat read-only control.
Never minds, I guess I will have to find another control.
If you find it. Let us know.
There's a great demand for rich-text editing control overall.
But there's no perfect one. Yet creating a perfect one requires A LOT of resources.