INT 21 - DoubleDOS - SET/RESET KEYBOARD CONTROL FLAGS AH = E8h AL = program for which to set flags (00h this program, 01h other) DX = keyboard control flags (see #02088) Return: DX = previous flags Notes: disabling Ctrl-PrtSc will allow the program to intercept the keystroke; disabling any of the other keystrokes disables them completely identical to AH=F8h SeeAlso: AH=E1h"DoubleDOS",AH=E2h"DoubleDOS",AH=E3h"DoubleDOS" SeeAlso: AH=F8h"DoubleDOS" Bitfields for DoubleDOS keyboard control flags: Bit(s) Description (Table 02088) 0 menu 1 exchange 2 entire keyboard enable/disable 3 Ctrl-C 4 Ctrl-PrtSc 5 Alt/Erase 6 Ctrl-Break 7 Ctrl-NumLock 8 shift-PrtSc 9-13 undefined 14 cancel key (clear keyboard buffer) 15 suspend key Note: setting a enables the corresponding key or operatin, clearing a disables it