Question

我正在研究一个使用鼠标的Assembly项目（TASM和DOSBox）。当用户单击屏幕上的特定区域时，将显示特定消息。

我的问题是，只要按下鼠标按钮（每次单击3或4次），计算机就会继续打印消息。

我尝试保存最后按下的按钮，并且如果连续两次按下同一按钮，则无法打印消息，如下面的代码所示，但这似乎不起作用。我也了解，有一种方法可以获取按钮 release 信息，但我似乎也无法使其正常工作。

任何人都知道如何解决此问题或采用其他方法吗？谢谢。

LL m = (1LL << (n + 1)) - 2;

要提的另一件事：设置时

long long

到IDEAL MODEL small STACK 0f500h mouse_last_button dw 1 ;holds the value of last mouse button clicked mouse_button dw 0 ;holds the value of mouse button clicked counter dw ? x_clicked dw ? y_clicked dw ? half_button dw 9 arr_length dw 76 clear_x dw 229 clear_y dw 137 CODESEG ;================PROCEDURES================ proc setGraphic ;sets graphic mode mov ax, 13h int 10h ret endp setGraphic ;----------------- proc initMouse ;initializes mouse mov ax, 0 int 33h ;resets mouse mov ax, 1 int 33h ;shows pointer ret endp initMouse ;----------------- proc initImage ;imports keyboard bitmap mov [BmpLeft],0 mov [BmpTop],99 mov [BmpColSize], 320 mov [BmpRowSize] ,101 mov dx,offset SmallPicName call OpenShowBmp ret endp initImage ;----------------- proc getMouseClick mov ax, [mouse_button] ;stores the value of the last state of the mouse mov [mouse_last_button], ax mov ax,3 int 33h ;gets mouse information shr cx, 1 ;halves the x position value since the interrupt returns double mov [mouse_button],bx ;saves the click's button, x and y position mov [x_clicked],cx mov [y_clicked],dx ret endp getMouseClick ;----------------- proc checkMouseButton ret endp checkMouseButton ;----------------- proc checkXR ;check if click is not more than 9 pixels right to the center (of the button) mov bx, offset x_arr add bx,[counter] mov ax,[bx] add ax,[half_button] ret endp checkXR ;----------------- proc checkXL ;check if click is not more than 9 pixels left to the center mov ax,[bx] sub ax,[half_button] ret endp checkXL ;----------------- proc checkYT ;check if click is not more than 9 pixels above the center mov bx, offset y_arr add bx,[counter] mov ax,[bx] sub ax,[half_button] ret endp checkYT ;----------------- proc checkYB ;check if click is not more than 9 pixels below the center mov ax,[bx] add ax,[half_button] ret endp checkYB ;----------------- proc printLetter ;prints the character at button that was clicked mov bx, offset letter_arr mov ax,[counter] shr ax,1 ;halves counter since letter_arr is byte sized and counter is word sized add bx,ax mov dx, [bx] mov ah, 2 int 21h ret endp printLetter ;----------------- ;================PROCEDURES================ start: mov ax,@data mov ds,ax call setGraphic ;sets graphic mode call initMouse ;initializes mouse call initImage ;displays keyboard's image mov cx, [arr_length] ;iterates over all of the buttons in the keyboard until one matches a click's location mov [counter],cx mouseLoop: call getMouseClick mov ax, [mouse_button] ;waits for the user to click left mouse button cmp ax, 1 jne doLoop cmp ax,[mouse_last_button] ;if button pressed before is the same as the current one, wait for another press je mouseLoop call checkXR ;checks X right cmp [x_clicked],ax ja searchAgain call checkXL ;checks X left cmp [x_clicked],ax jb searchAgain call checkYT ;checks Y top cmp [y_clicked],ax jb searchAgain call checkYB ;checks Y bottom cmp [y_clicked],ax jb writeLetter searchAgain: ;precedes to the next button in the array mov cx,[counter] dec [counter] cmp cx,0 jnz mouseLoop jmp doLoop writeLetter: call printLetter ;prints the letter found call initImage ;restarts the keyboard image mov ax, 1 int 33h ;shows pointer doLoop: ;starts iterating over arrays again mov cx,[arr_length] mov [counter],cx jmp mouseLoop exit: mov ax, 4c00h int 21h END start（实际上应该如此），什么都没有发生。

Answer 1

我找到了解决方案。我删除了：

    cmp ax,[mouse_last_button]
    je mouseLoop

并添加：

waitForRelease: 
    call getMouseClick
    mov ax,[mouse_button]
    cmp ax,0
    jne waitForRelease

紧接writeLetter之后进入循环，等待用户释放鼠标按钮，然后继续。

单击鼠标一次重复多次

1 个答案: