怎么判断按没按组合键

[fipl]

如CRTL+A等等

[int10]

看看中断16吧。。

[Areslee]

40H:13H中有控制键的状态,接管INT 9H可以得到按下的键的扫描码

[wyd95968]

软中断16H的2号子功能读键盘各转换键的当前状态
入口参数：AH=2
出口参数：AL=各转换键的当前状态。AL中每一位代表一个转换键，且相应位为1时表示按了相应键。AL的8个二进制位定义如下：
bit7:INS
bit6:Caps Lock
bit5:Num Lock
bit4:Scroll Lock
bit3:Alt
bit2:Ctrl
bit1:左Shift
bit0:右Shift

[fipl]

软中断16H的2号子功能只能转换特殊的键呀
要是配合起普通贱怎么用呀？

[wyd95968]

一样可检测。不信你瞧：
code segment
assume cs:code,ds:code
show macro ; used input output function
local sh1,sh2 ; AX DL CON disp BIN and ' '
push ax ; CX
push cx ; DX
push dx
mov ah,2
mov cx,4
shr dl,cl
cmp dl,0ah
jb sh1
add dl,07h
sh1: add dl,30h
int 21h
pop dx
push dx
and dl,0fh
cmp dl,0ah
jb sh2
add dl,07h
sh2: add dl,30h
mov ah,2
int 21h
mov ah,2
mov dl,20H
int 21h
pop dx
pop cx
pop ax
endm
crlf macro
push dx
mov dl,0ah
disp
mov dl,0dh
disp
pop dx
endm
tip macro a
local tip0,tip1
jmp tip1
tip0: db a,'$'
tip1: push ds
push cs
pop ds
push dx
push ax
mov ah,9
lea dx,tip0
int 21h
pop ax
pop dx
pop ds
endm
start: mov ax,cs
mov ds,ax
reprec:mov ah,0
int 16h
push ax
crlf
mov ah,2
int 16h
test al,80h
jz nextbi1
tip 'INS '
nextbi1:test al,40h
jz nextbi2
tip 'Caps Lock '
nextbi2:test al,20h
jz nextbi3
tip 'Num Lock '
nextbi3:test al,10h
jz nextbi4
tip 'Scroll Lock '
nextbi4:test al,8
jz nextbi5
tip 'Alt '
nextbi5:test al,4
jz nextbi6
tip 'Ctrl '
nextbi6:test al,2
jz nextbi7
tip 'L shift '
nextbi7:test al,1
jz nextbi8
tip 'R shift '
nextbi8:cmp al,0
je nextbi9
mov dl,al
show
crlf
nextbi9:pop ax
mov dl,ah
show
mov dl,al
show
cmp al,1bh
je exits
jmp reprec
exits:mov ah,4ch
int 21h
code ends
end start

[giantzz]

mov ah,12h
int 16h