from tkinter import *
from tkinter import messagebox

class Application(Frame):

    def __init__(self,master=None):
        # Frame是父类，得主动的调用父类 的构造器
        super().__init__(master)   # super() 代表的是父类的定义，而不是父类的对象
        self.master = master
        self.pack()
        self.createWidget()

    def createWidget(self):
        self.w1 = Text(root,width = 40,height = 12 ,bg = "gray")
        self.w1.pack()
        # 在Text标签里面插入东西
        self.w1.insert(1.0,"0123456789\n abcdddd")
        self.w1.insert(2.3,"dddddddd\n")

        Button(self,text ="重复插入文本",command = self.insertText).pack(side = "left")
        Button(self, text="返回文本", command=self.returnText).pack(side="left")
        Button(self, text="添加图片", command=self.addImage).pack(side="left")
        Button(self, text="添加组件", command=self.addWidget).pack(side="left")
        # Button(self, text="通过tag精确的控制文本", command=self.testTag).pack(side="left")

    def insertText(self):
        # INSERT 表示在光标处插入
        self.w1.insert(INSERT,"rrrr")
        # END 表示在最后插入
        self.w1.insert(END,'[kkk]')
    def returnText(self):
        print("所有的文本："+self.w1.get(1.0,END))
    def addImage(self):
        self.photo = PhotoImage(file = "imgs/1.gif")
        self.w1.image_create(END,image=self.photo)

    def addWidget(self):
        b1 = Button(self.w1 ,text = "ffff")
        self.w1.window_create(INSERT,window = b1)





root = Tk()
root.geometry("400x200+200+300")
root.title("测试")
app = Application(master = root)

root.mainloop()