tkinter中幾類對話框的使用小案例

tkinter中對話框有顏色選擇對話框、文件對話框、輸入數據對話框和消息對話框等。在這個小案例裏使用了顏色對話框，獲得顏色修改Label的背景色，使用了文件對話框打開文本文檔，顯示在Label中，運用數據對話框輸入一個整型數顯示在Label中。
案例代碼如下：

from tkinter import *
from tkinter.colorchooser import *
from tkinter.filedialog import *
from tkinter.simpledialog import *

class Application(Frame):
	def __init__(self,master = None):
		super().__init__(master)
		self.master = master
		self.pack()
		self.createWidget()

	def createWidget(self):

		self.btn1 = Button(self.master,text='choose the color')
		self.btn1.place(relx = 0.4,rely = 0.1,relwidth = 0.18,relheight= 0.1)
		self.btn1.bind("<Button-1>",self.test1)
		self.btn2 = Button(self.master,text='choose the file')
		self.btn2.place(relx = 0.2,rely = 0.1,relwidth = 0.15,relheight= 0.1)
		self.btn2.bind("<Button-1>",self.testOpen)
		self.show = Label(self.master,width = 100,height = 20,bg ="white")
		self.show.place(relx = 0.2,rely = 0.3,relwidth = 0.6,relheight = 0.5)
		self.btn3 = Button(self.master,text='ask for Interger')
		self.btn3.place(relx = 0.6,rely = 0.1,relwidth = 0.2,relheight= 0.1)
		self.btn3.bind("<Button-1>",self.testAskInt)

	def test1(self,event):
		#打開一個顏色選擇對話框
		acol = askcolor(color='blue',title='color choose tools')  
		print(acol)
		self.show["bg"] = acol[1]

	def testOpen(self,event):
		#打開一個文件選擇對話框
		with askopenfile(title = "up file",initialdir="d:",filetypes=[("textFile",".txt")]) as f: 
			self.show["text"] = f.read()
	
	def testAskInt(self,event):
		#打開一個請求輸入整型數據對話框。
		num = askinteger(title = "input age",prompt = "Please input a number for age",initialvalue = 18,minvalue = 1,maxvalue = 130) 
		self.show["text"] = num

if __name__ == "__main__":
	root = Tk()
	root.geometry("630x300+200+300")
	app = Application(master = root)
	root.mainloop()

運行效果截圖如下：