FVWM: Sloppy Focus option

[Dan Espen]

Hello Dan,
First of all have a good year.
See, Openbox has a configuration option that allows sloppy focus to
ignore the pointer when it's still. Then when you unmiximize a window
it doesn't lose the focus if the pointer "passively" cross its
boundaries.
I couldn't get this in FVWM with any combination of FocusStyle (remember
I'm talking about Sloppy Focus). I could barely workaround the issue by
adding WarpToWindow to my own maximize function, but it doesn't solve
the problem for ewmh fullscreen (i.e. firefox, mplayer, etc.).
Any idea of what can I do?
Time ago you pointed me where to modify fvwm C code and I could
customize some default option myself. That's the kind of help I most
value - though I understand that what I'm asking you this time can be
too complex.

Hi,

Question should go to ***@fvwm.org.
I've copied them.

Not sure of the answer myself.