[RTTY] AutoHotKey question

[Bill Turner]

I know a lot of folks in this group use AutoHotKey for macros. I
wonder if anyone could help with a small problem. 

I have my mouse wheel programmed to send Alt-F4 when I press down on
it using this command to close the active window:  

mbutton::
send !{F4}
return

and this works great in Windows XP but with Win7 and 8 it works on
some windows but not on others. I'm sure this is some kind of security
"feature" of Win7 and 8. I tried lowering the security level all the
way down, but no joy. 

Is there any way to make it work on all windows?

Thanks in advance,

73, Bill W6WRT