如何使用 2 个键在 Canvas 上移动物体?在有人告诉我我没有做一些研究之前,我已经做了。我之所以还在问这个问题,是因为我不知道他们在说什么。人们正在谈论我不知道的迷你状态和命令。
from tkinter import *
def move(x,y):
canvas.move(box,x,y)
def moveKeys(event):
key=event.keysym
if key =='Up':
move(0,-10)
elif key =='Down':
move(0,10)
elif key=='Left':
move(-10,0)
elif key=='Right':
move(10,0)
window =Tk()
window.title('Test')
canvas=Canvas(window, height=500, width=500)
canvas.pack()
box=canvas.create_rectangle(50,50,60,60, fill='blue')
canvas.bind_all('<Key>',moveKeys)
有什么方法可以让我同时移动 2 个键吗?我希望使用这种格式来完成,而不是使用迷你状态。
最佳答案
如果你说的“迷你状态”方法指的是这个答案( Python bind - allow multiple keys to be pressed simultaneously ),其实也不难理解。
请参阅下面的代码的修改和注释版本,它遵循这一理念:
from tkinter import tk
window = tk.Tk()
window.title('Test')
canvas = tk.Canvas(window, height=500, width=500)
canvas.pack()
box = canvas.create_rectangle(50, 50, 60, 60, fill='blue')
def move(x, y):
canvas.move(box, x, y)
# This dictionary stores the current pressed status of the (← ↑ → ↓) keys
# (pressed: True, released: False) and will be modified by Pressing or Releasing each key
pressedStatus = {"Up": False, "Down": False, "Left": False, "Right": False}
def pressed(event):
# When the key "event.keysym" is pressed, set its pressed status to True
pressedStatus[event.keysym] = True
def released(event):
# When the key "event.keysym" is released, set its pressed status to False
pressedStatus[event.keysym] = False
def set_bindings():
# Bind the (← ↑ → ↓) keys's Press and Release events
for char in ["Up", "Down", "Left", "Right"]:
window.bind("<KeyPress-%s>" % char, pressed)
window.bind("<KeyRelease-%s>" % char, released)
def animate():
# For each of the (← ↑ → ↓) keys currently being pressed (if pressedStatus[key] = True)
# move in the corresponding direction
if pressedStatus["Up"] == True: move(0, -10)
if pressedStatus["Down"] == True: move(0, 10)
if pressedStatus["Left"] == True: move(-10, 0)
if pressedStatus["Right"] == True: move(10, 0)
canvas.update()
# This method calls itself again and again after a delay (80 ms in this case)
window.after(80, animate)
# Bind the (← ↑ → ↓) keys's Press and Release events
set_bindings()
# Start the animation loop
animate()
# Launch the window
window.mainloop()
关于python - 同时按 2 个键可对角移动 tkinter?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44074425/