檢測按住的兩個鼠標按鈕

Question

我是 python 的新手，我發現了一個在按住並釋放鼠標按鈕時檢測鼠標按鈕的代碼，但我希望在按住兩個按鈕時“x”變為 True，我該怎么做

     # This function will be called when any key of mouse is pressed
def on_click(*args):
  # see what argument is passed.
  print(args)
  if args[-1]:
    # Do something when the mouse key is pressed.
    print('The "{}" mouse key has held down'.format(args[-2].name))

elif not args[-1]:
    # Do something when the mouse key is released.
    print('The "{}" mouse key is released'.format(args[-2].name))

# Open Listener for mouse key presses
with Listener(on_click=on_click) as listener:
 # Listen to the mouse key presses
 listener.join()

Answer 1

要檢測兩個按鈕是否同時按下，需要三個變量（在程序開始時初始化這些，在 on_click 函數之外）：

global leftPressed, rightPressed, bothPressed
leftPressed = False
rightPressed = False
bothPressed = False

*注意這里的變量是全局的，因為多個版本的 on_click 將訪問和修改變量

然后，在第一個 if 語句中（按下鼠標按鈕時）：

if args[-2].name == "left":
    leftPressed = True
elif args[-2].name == "right":
    rightPressed = True
            
if leftPressed and rightPressed:
    # if both left and right are pressed
    bothPressed = True

在第二個 if 語句中（釋放鼠標按鈕時）

if args[-2].name == "left":
    leftPressed = False
elif args[-2].name == "right":
    rightPressed = False

# as one key has been released, both are no longer pressed
bothPressed = False
print(bothPressed)

最后，要從 function on_click 中訪問全局變量，請將此行放在 function 的開頭：

global leftPressed, rightPressed, bothPressed

在此處查看完整版本的代碼：

https://pastebin.com/nv9ddqMM