XGrabKey as global hotkey maker

[Alexander]

Hi,

I am trying to use XGrabKey to create global hotkeys. It works with the "AnyModifier" modifier, but it fails to include arbitrary modifiers (as when use "AnyModifier", without selection by pointed modifiers). Is there an example of such use of XGrabKey or is it not possible to use it to create global hotkeys at all and is it recommended for this purpose in vain?
This is a fairly common question in the world:

https://unix.stackexchange.com/questions/717337/xlib-how-to-ignore-all-but-one-modifiers-with-xgrabkey
https://stackoverflow.com/questions/4037230/global-hotkey-with-x11-xlib
...

Thank You,
Alexander.