This feature is better described in this forum topic: https://sourceforge.net/projects/foldermenu/forums/forum/998437/topic/3665442
What it does is, once a Save As dialog is open, focusing the Total Commander (TC) window and/or changing folders inside the TC window will automatically update the folder inside the Save As dialog. The user can change paths or panels inside the TC window while the Save As dialog is in the background. This is particularly useful when having TC already open in a desired path (a simple click in the TC window will update the Save As dialog) or when using TC to navigate to a certain folder.
I believe this can be integrated in the AsyncHotKeyPoll() function ... of course, without the do/until 0 loop.
Regards,
Follow folder changes in Total Commander
This is similar to (the code was actually from) the "Quick Click Switch" ticket: https://sourceforge.net/tracker/?func=detail&aid=2977119&group_id=275170&atid=1169139