我正在使用TASM，DosBox和Notepad ++进行装配项目。 我在屏幕上画了一个点，我需要知道用户是否点击它（右键）。 我试图检查用户是否点击了鼠标右键，然后点击坐标是否与点坐标相同 由于某种原因，它不起作用。 这是我的过程：
System.Web.HttpApplication我称之为：
proc SetCursor
;initialize the mouse
mov ax, 0h
int 33h
;show mouse
mov ax, 1h
int 33h
; get mouse place and status
mov ax, 3h
int 33h
ret
endp SetCursor
程序只是在标签之间跳转，坐标是否相同无关紧要。
答案 0 :(得分：1)
您的代码存在一些问题：
proc SetCursor不应该初始化鼠标并同时获取位置。je Check_X_Cords需要另一次跳跃，以防它不相等。 je Check_Y_Cords call DotOne可能会摧毁BX。有很多代码缺失，所以我必须添加它才能测试它：
以下是代码，它运行并正确检测右键单击像素（左键单击被忽略，但您可以更改它），评论将帮助您理解它：
.model small
.stack 100h
.data
XCords1 dw 160 ;COORDS OF PIXEL AT
YCords1 dw 100 ;SCREEN CENTER.
score dw 0
x dw ? ;MOUSE CLICK X.
y dw ? ;MOUSE CLICK Y.
msj db 'score!$'
hyphen db '-$'
clear db ' $' ;CLEAR LINE.
numstr db '$$$$$' ;STRING FOR 4 DIGITS.
.code
mov ax, @data
mov ds, ax
;DotGame:
;enter graphics mode
mov ax, 13h
int 10h
call SetCursor ; mouse input
call DotOne
DotGame:
mov bx, 1 ;CHECK RIGHT BUTTON (USE 0 TO CHECK LEFT BUTTON).
call GetMouseState
and bx, 00000010b ;CHECK SECOND BIT (BIT 1).
jz DotGame ;NO RIGHT CLICK. REPEAT.
mov x, cx ;PRESERVE X AND Y BECAUSE
mov y, dx ;CX DX WILL BE DESTROYED.
call display_coords
;cmp bx, 01 ; check if left mouse was clicked
;je Check_X_Cords
;check if the player clicked the dot cords
Check_X_Cords:
mov cx, x
cmp cx, XCords1
je Check_Y_Cords
jmp DotGame ;WRONG COLUMN. REPEAT.
Check_Y_Cords:
mov dx, y
cmp dx, YCords1
je ScoreLabel
jmp DotGame ;WRONG ROW. REPEAT.
ScoreLabel:
inc [score]
;DISPLAY "SCORE!".
mov ah, 9
mov dx, offset msj
int 21h
jmp DotGame ;REPEAT.
mov ax, 4c00h
int 21h
;---------------------------------------
proc SetCursor
;initialize the mouse
mov ax, 0h
int 33h
;show mouse
mov ax, 1h
int 33h
; get mouse place and status
;mov ax, 3h
;int 33h
ret
endp SetCursor
;---------------------------------------
;DRAW ONE PIXEL AT XCORDS1,YCORDS1.
proc DotOne
mov ah, 0ch ;SERVICE TO DRAW PIXEL.
mov al, 14 ;YELLOW.
mov bh, 0 ;VIDEO PAGE.
mov cx, XCords1
mov dx, YCords1
int 10h ;BIOS SCREEN SERVICES.
ret
endp DotOne
;---------------------------------------
;GET MOUSE CURSOR STATE.
;RETURN : BX : BIT 0 = 0 : LEFT BUTTON PRESSED.
; = 1 : LEFT BUTTON RELEASED.
; : BIT 1 = 0 : RIGHT BUTTON PRESSED.
; = 1 : RIGHT BUTTON RELEASED.
; CX = SCREEN COLUMN.
; DX = SCREEN ROW.
proc GetMouseState
mov ax, 3 ;SERVICE TO GET MOUSE STATE.
int 33h
ret
endp GetMouseState
;------------------------------------------
;CONVERT A NUMBER IN STRING.
;ALGORITHM : EXTRACT DIGITS ONE BY ONE, STORE
;THEM IN STACK, THEN EXTRACT THEM IN REVERSE
;ORDER TO CONSTRUCT STRING (STR).
;PARAMETERS : AX = NUMBER TO CONVERT.
; SI = POINTING WHERE TO STORE STRING.
;DESTROYED : AX, BX, CX, DX, SI.
number2string proc
call dollars ;FILL STRING WITH $.
mov bx, 10 ;DIGITS ARE EXTRACTED DIVIDING BY 10.
mov cx, 0 ;COUNTER FOR EXTRACTED DIGITS.
cycle1:
mov dx, 0 ;NECESSARY TO DIVIDE BY BX.
div bx ;DX:AX / 10 = AX:QUOTIENT DX:REMAINDER.
push dx ;PRESERVE DIGIT EXTRACTED FOR LATER.
inc cx ;INCREASE COUNTER FOR EVERY DIGIT EXTRACTED.
cmp ax, 0 ;IF NUMBER IS
jne cycle1 ;NOT ZERO, LOOP.
;NOW RETRIEVE PUSHED DIGITS.
cycle2:
pop dx
add dl, 48 ;CONVERT DIGIT TO CHARACTER.
mov [ si ], dl
inc si
loop cycle2
ret
number2string endp
;------------------------------------------
;FILLS VARIABLE "NUMSTR" WITH '$'.
;USED BEFORE CONVERT NUMBERS TO STRING, BECAUSE
;THE STRING WILL BE DISPLAYED.
;PARAMETER : SI = POINTING TO STRING TO FILL.
;DESTROYED : BL, CX, DI.
proc dollars
mov cx, 5
mov di, offset numstr
dollars_loop:
mov bl, '$'
mov [ di ], bl
inc di
loop dollars_loop
ret
endp
;------------------------------------------
proc display_coords
;SEND CURSOR TO START OF UPPER LEFT.
mov ah, 2 ;SERVICE TO SET CURSOR POSITION.
mov bh, 0 ;VIDE PAGE.
mov dl, 0 ;X.
mov dh, 0 ;Y.
int 10h
;CLEAR LINE.
mov ah, 9
mov dx, offset clear
int 21h
;SEND CURSOR TO START OF UPPER LEFT.
mov ah, 2 ;SERVICE TO SET CURSOR POSITION.
mov bh, 0 ;VIDE PAGE.
mov dl, 0 ;X.
mov dh, 0 ;Y.
int 10h
;CONVERT X TO STRING.
mov ax, x ;AX = PARAMETER FOR NUMBER2STRING.
mov si, offset numstr
call number2string
;DISPLAY X.
mov ah, 9
mov dx, offset numstr
int 21h
;"-".
mov ah, 9
mov dx, offset hyphen
int 21h
;CONVERT Y TO STRING.
mov ax, y ;AX = PARAMETER FOR NUMBER2STRING.
mov si, offset numstr
call number2string
;DISPLAY Y.
mov ah, 9
mov dx, offset numstr
int 21h
ret
endp display_coords