AutoHotkey Community

From limited testing so far, I've found when Irfanview is the active window, AH_L-64 bit doesn't register any keystrokes. Hotkeys work fine with previous versions of AH, current 32-bit versions (both Unicode & ANSI). Keystrokes register with AH_L-64 if Irfanview is running but not the active window.

This is on a Win Vista 64-bit system, Irfanview 4.28. Haven't tried yet on Win 7.

Keystrokes apparently go straight to Irfanview, where they activate their normal functions. They don't show up in the AH keylist.

Just to make sure it wasn't an overlooked script error, I tried again with this minimal script:
return
F9::
MsgBox You pressed F9
return

Same result.

Try using the keyboard hook, and make sure that AHK is running as admin when you have UAC enabled.