如何使tkinter标签的背景透明，以便只看到文本？
如何使tkinter标签的背景透明，以便只看到文本？
提问于 2019-03-25 23:28:42
我正在为一个事件创建一个倒计时应用程序，我已经设法让除了标签之外的所有东西都启动并运行起来。我不能使他们的背景是透明的，以便只显示文本。有没有办法让我做到这一点？
import datetime
import tkinter as tk
def round_time(dt, round_to):
seconds = (dt - dt.min).seconds
rounding = (seconds + round_to / 2) // round_to * round_to
return dt + datetime.timedelta(0, rounding - seconds, -dt.microsecond)
def ct(label):
def count():
now = round_time(datetime.datetime.now(), round_to=1)
eh = datetime.datetime(2019, 3, 31, 20, 30)
tte = eh - now
label.config(text=str(tte))
label.after(50, count)
count()
root = tk.Tk()
root.title("Earth Hour Countdown!")
now = round_time(datetime.datetime.now(), round_to=1)
eh = datetime.datetime(2019, 3, 31, 20, 30)
tte = eh - now
frame = tk.Frame(root, bg="#486068")
frame.place(relwidth=1, relheight=1)
canvas = tk.Canvas(root, height=200, width=500)
canvas.place(relwidth=1, relheight=1)
bg_img = tk.PhotoImage(file="C:/Users/bmg/Desktop/eh1.gif")
bg_label = tk.Label(canvas, image=bg_img)
bg_label.place(relwidth=1, relheight=1)
label_msg = tk.Label(root, text="Earth Hour Countdown:", font="MSGothic 50 bold", bg="black", fg="#652828", bd=1)
label_msg.place(relx=0.035, rely=0.1)
label_cd = tk.Label(root, text=str(tte), font="MSGothic 50 bold", bg="black", fg="#652828", bd=1)
label_cd.place(relx=0.590, rely=0.1)
ehtime_label = tk.Label(root, text=("Earth Hour:" + eh.strftime("%d-%m-%Y %H:%M:%S")), font="MSGothic 50 bold", bg="black", fg="#652828", bd=1)
ehtime_label.place(relx=0.13, rely=0.3)
ct(label_cd)
root.mainloop()标签输出示例：https://imgur.com/97DkJBa
回答 1
Stack Overflow用户
回答已采纳
发布于 2019-03-26 00:04:48
我不认为你可以使标签透明。
你可以使用create text on a Canvas，默认情况下，这个文本没有背景：
import datetime
import tkinter as tk
def round_time(dt, round_to):
seconds = (dt - dt.min).seconds
rounding = (seconds + round_to / 2) // round_to * round_to
return dt + datetime.timedelta(0, rounding - seconds, -dt.microsecond)
def ct():
def count():
now = round_time(datetime.datetime.now(), round_to=1)
eh = datetime.datetime(2019, 3, 31, 20, 30)
tte = eh - now
canvas.itemconfig(label_cd, text=str(tte))
root.after(50, count)
count()
root = tk.Tk()
root.title("Earth Hour Countdown!")
now = round_time(datetime.datetime.now(), round_to=1)
eh = datetime.datetime(2019, 3, 31, 20, 30)
tte = eh - now
canvas = tk.Canvas(root, height=360, width=1333)
canvas.pack()
bg_img = tk.PhotoImage(file="C:/Users/bmg/Desktop/eh1.gif")
bg_label = canvas.create_image((0,0), image=bg_img, anchor=tk.N+tk.W)
label_msg = canvas.create_text((410, 120), text="Earth Hour Countdown:", font="MSGothic 50 bold", fill="#652828")
label_cd = canvas.create_text((1030,120), text=str(tte), font="MSGothic 50 bold", fill="#652828")
ehtime_label = canvas.create_text((650,240), text=("Earth Hour:" + eh.strftime("%d-%m-%Y %H:%M:%S")), font="MSGothic 50 bold", fill="#652828")
ct()
root.mainloop()请注意，这还需要对文本的位置以及如何更新文本进行一些更改。我已经试着让事情尽可能接近你的例子。请注意，没有文本的背景可能不会给你带来你想要的可读性：
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/55341246
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