tkinter比较常用的组件

import tkinter as tk
def btnHelloClicked():
    cd = float(entryCd.get())
    labelHello.config(text="%.2f°C = %.2f°F" % (cd, cd * 1.8 + 32))
root = tk.Tk()
root.title("Entry Test")
labelHello = tk.Label(root, text="Convert °C to °F...", height=5, width=20, fg="blue")
labelHello.pack()
entryCd = tk.Entry(root, text="0")
entryCd.pack()
btnCal = tk.Button(root, text="Calculate", command=btnHelloClicked)
btnCal.pack()
root.mainloop()

import tkinter as tk
def colorChecked():
    labelHello.config(fg=color.get())
def typeChecked():
    textType = typeBlod.get() + typeItalic.get()
    if textType == 1:
        labelHello.config(font=("Arial", 12, "bold"))
    elif textType == 2:
        labelHello.config(font=("Arial", 12, "italic"))
    elif textType == 3:
        labelHello.config(font=("Arial", 12, "bold italic"))
    else:
        labelHello.config(font=("Arial", 12))
root = tk.Tk()
root.title("Radio & Check Test")
labelHello = tk.Label(root, text="Check the format of text.", height=3, font=("Arial", 12))
labelHello.pack()
color = tk.StringVar()#定义一个字符串变量
tk.Radiobutton(root, text="Red", variable=color, value="red",
               command=colorChecked).pack(side=tk.LEFT)
tk.Radiobutton(root, text="Blue", variable=color, value="blue",
               command=colorChecked).pack(side=tk.LEFT)
tk.Radiobutton(root, text="Green", variable=color, value="green",
               command=colorChecked).pack(side=tk.LEFT)
typeBlod = tk.IntVar()#定义整型变量
typeItalic = tk.IntVar()#定义整型变量
tk.Checkbutton(root, text="Blod", variable=typeBlod, onvalue=1,
               offvalue=0, command=typeChecked).pack(side=tk.LEFT)
                #onvalue代表复选框选中时整型变量的值
tk.Checkbutton(root, text="Italic", variable=typeItalic, onvalue=2,
               offvalue=0, command=typeChecked).pack(side=tk.LEFT)
root.mainloop()

import tkinter as tk
from tkinter import messagebox as msgbox
def btn1_clicked():
    msgbox.showinfo("Info", "从前慢！")
def btn2_clicked():
    msgbox.showwarning("Warning", "不要在月亮上喝酒！")
def btn3_clicked():
    msgbox.showerror("Error", "输入可能有错误！")
def btn4_clicked():
    msgbox.askquestion("Question", "你要吃香蕉还是苹果？")
def btn5_clicked():
    msgbox.askokcancel("OkCancel", "确定穿越到唐朝吗？")
def btn6_clicked():
    msgbox.askyesno("YesNo", "确定去买衣裳？")
def btn7_clicked():
    msgbox.askretrycancel("Retry", "别气馁，再来一次！")
root = tk.Tk()
root.title("消息框测试")
btn1 = tk.Button(root, text="showinfo", command=btn1_clicked)
btn1.pack(fill=tk.X)
btn2 = tk.Button(root, text="showwarning", command=btn2_clicked)
btn2.pack(fill=tk.X)
btn3 = tk.Button(root, text="showerror", command=btn3_clicked)
btn3.pack(fill=tk.X)
btn4 = tk.Button(root, text="askquestion", command=btn4_clicked)
btn4.pack(fill=tk.X)
btn5 = tk.Button(root, text="askokcancel", command=btn5_clicked)
btn5.pack(fill=tk.X)
btn6 = tk.Button(root, text="askyesno", command=btn6_clicked)
btn6.pack(fill=tk.X)
btn7 = tk.Button(root, text="askretrycancel", command=btn7_clicked)
btn7.pack(fill=tk.X)
root.mainloop()

import tkinter as tk
def drawCircle(self, x, y, r, **kwargs):
    return self.create_oval(x - r, y - r, x + r, y + r, **kwargs)
root = tk.Tk()
root.title("画布测试")
cvs = tk.Canvas(root, width=600, height=400)
cvs.pack()
cvs.create_line(50, 50, 50, 300)
cvs.create_line(100, 50, 200, 300, fill="red", dash=(4, 4), arrow=tk.LAST)
cvs.create_rectangle(200, 50, 400, 200, fill="blue")
cvs.create_oval(450, 50, 550, 200, fill="green")
drawCircle(cvs, 450, 300, 50, fill="red")
cvs.create_polygon(200, 250, 350, 250, 350, 350, 220, 300, fill="yellow")
root.mainloop()

import tkinter as tk
# 建立tkinter窗口，设置窗口标题
root = tk.Tk()
root.title("Hello Test")
# 在窗口中创建标签
labelHello = tk.Label(root, text="Hello Tkinter!")
labelHello.pack()
# 运行并显示窗口
root.mainloop()

import tkinter as tk
def btnHelloClicked():
    labelHello.config(text="Hello tkinter!")
root = tk.Tk()
root.title("Button Test")
labelHello = tk.Label(root, text="Press the button...", height=5, width=20, fg="blue")
labelHello.pack()
btn = tk.Button(root, text="Hello", command=btnHelloClicked)
btn.pack()
root.mainloop()