from tkinter import *

class Chat:
    def __init__(self,parent):
        self.frm_Chat=Frame(parent)
        self.frm_Chat.pack()

        self.frm_IncomingText=Frame(self.frm_Chat)
        self.frm_IncomingText.pack()

        self.txt_ChatBox=Text(self.frm_IncomingText,height=10,wrap=WORD)
        self.txt_ChatBox.pack(side=LEFT)

        self.scr_ChatBoxScroll=Scrollbar(self.frm_IncomingText,orient=VERTICAL,command=self.txt_ChatBox.yview)
        self.scr_ChatBoxScroll.pack(side=LEFT)

        self.txt_ChatBox["yscrollcommand"]=self.scr_ChatBoxScroll.set

        self.frm_OutgoingText=Frame(self.frm_Chat)
        self.frm_OutgoingText.pack()

        self.ent_InputText=Entry(self.frm_OutgoingText)
        self.ent_InputText.pack(side=LEFT)

        self.btn_SendMessage=Button(self.frm_OutgoingText,text="Send")
        self.btn_SendMessage.pack(side=LEFT)


root=Tk()
chatwindow=Chat(root)
root.mainloop()