Int 21/AH=E8h

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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

See Also: AH=E1h"DoubleDOS" - AH=E2h"DoubleDOS" - AH=E3h"DoubleDOS"

See Also: 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

Category: DOS-Based Task Switchers/Multitaskers - Int 21h - D

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