如何捕捉两个关键事件的Tkinter

  • Z时代
  • 2024-01-10
  • 分类：问答

所以我做小泛出的Tkinter做作的比赛，我面临wall.Compiler只抓住了一个关键事件，如果第二用户按下按键，1用户运动LL停止。你们知道如何解决这个问题吗？如何捕捉两个关键事件的Tkinter

这里是代码：

from tkinter import* 
w=600 
h=300 
padis_sigane=10 
padis_sigrdze=75 
padis_sichqare=5 
root=Tk() 
root.geometry("{}x{}".format(w,h)) 
root.resizable(False,False) 
c=Canvas(root,width=w,height=h,bg="green") 
c.create_line(w//2,0,w//2,h,width=10,fill="white") 
c.create_line(padis_sigane,0,padis_sigane,h,width=2,fill="white") 
c.create_line(w-padis_sigane,0,w-padis_sigane,h,width=2,fill="white") 
c.create_oval(w//2-w//30,h//2-w//30,w//2+w//30,h//2+w//30,fill="white",outline="white") 
class chogani: 
    def __init__(self,x,y): 
     self.x=x 
     self.y=y 
     self.pad=c.create_rectangle(self.x,self.y,self.x+padis_sigane,self.y+padis_sigrdze,fill="lightblue",outline="white") 
    def shxuili(self): 
     if c.coords(self.pad)[3]>=h: 
      c.coords(self.pad,self.x,h-padis_sigrdze,self.x+padis_sigane,h) 
     elif c.coords(self.pad)[1]<=0: 
      c.coords(self.pad,self.x,0,self.x+padis_sigane,padis_sigrdze) 
x=0;y=0 #Momavalshi 
pad1=chogani(0,1) 
pad2=chogani(w-padis_sigane,1) 
def K(event): 
    pad1.shxuili() 
    pad2.shxuili() 
    if event.keysym=='w': 
     c.move(pad1.pad,0,-padis_sichqare) 
    elif event.keysym=='s': 
     c.move(pad1.pad,0,padis_sichqare) 
    elif event.keysym=='Up': 
     c.move(pad2.pad,0,-padis_sichqare) 
    elif event.keysym=='Down': 
     c.move(pad2.pad,0,padis_sichqare) 
def R(event): 
    print("shen aushvi ", event.char) 
root.bind("<KeyPress>",K) 
root.bind("<KeyRelease>",R) 
root.focus_set() 
c.pack() 
root.mainloop()

回答：

在其他模块 - 像PyGame - 您使用的变量，比如和up_pressed = True/False被按下或释放键，当你改变。接下来创建mainloop来做这个变量来移动物体。由于tkinter早已mainloop所以你可以用after()执行定期自身的功能，这将检查w_pressed/up_pressed和移动对象。

简单（工作）例如：

它检查w和up和显示True/False为两个键。

import tkinter as tk 
# --- functions --- 
def pressed(event): 
    global w_pressed 
    global up_pressed 
    if event.keysym == 'w': 
     w_pressed = True 
    elif event.keysym == 'Up': 
     up_pressed = True 
def released(event): 
    global w_pressed 
    global up_pressed 
    if event.keysym == 'w': 
     w_pressed = False 
    elif event.keysym == 'Up': 
     up_pressed = False 
def game_loop(): 
    # use keys 
    print(w_pressed, up_pressed) 
    # run again after 500ms 
    root.after(500, game_loop) 
# --- data --- 
w_pressed = False 
up_pressed = False 
# --- main --- 
root = tk.Tk() 
root.bind("<KeyPress>", pressed) 
root.bind("<KeyRelease>", released) 
# start own loop 
game_loop() 
root.mainloop()

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