(from Yitzhak) ALT-H

(from Yitzhak) ALT-H
This patch disables ALT-H in NetHack mode.  Before patch: ALT-H in NetHack
mode brings down the Help menu in the menu bar.  After patch: ALT-H does
nothing in NetHack mode.  In both cases, in Windows mode, ALT-H brings
down the Help menu in the menu bar.   I can easily write a patch to have
ALT-H in NetHack mode act the same as '?'.

Explanation:
return 0: this window proc has processed this event.
return DefWindowProc(): process using default window proc.

ALT-H is the only key for which DefWindowProc() does something special AND
reaches the else.