Tkinter中对于canvas的支持

最新推荐文章于 2024-11-13 08:36:17 发布

原创最新推荐文章于 2024-11-13 08:36:17 发布 · 732 阅读

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#application #image #command #button #import #class

本文通过一个具体的Python Tkinter程序示例介绍了如何使用Canvas组件进行绘图操作，包括绘制圆弧、矩形、位图、线条、椭圆等，并展示了如何将控件放置在Canvas中。

Canvas上能放置图片，文本，空间，或者框体，包括如下方法：

create_arc：绘制圆弧

create_bitmap：绘制位图

create_image：绘制图片

create_line：绘制线条

create_oval：绘制椭圆

create_polygon：绘制多边形

create_text：绘制文本

create_window:放置控件

#!/usr/bin/python #Filename: button.py # -*- coding: utf-8 -*- from Tkinter import * class Application(Frame): def say_hi(self): print "hi there, everyone!" def say_bitmap(self): print "bitmap show" def createWidgets(self): self.canvas = Canvas(self) self.canvas["bg"] = "yellow" self.canvas["height"] = "800" self.canvas["width"] = "1000" self.canvas["relief"] = "sunken" self.canvas["borderwidth"] = "10" self.canvas.create_arc(100,100, 400, 400, start = 45) self.canvas.create_rectangle(100, 100, 400, 400) self.canvas.grid(row = 0, column = 0) self.canvas.create_bitmap(100, 500, bitmap = "error") # self.tiger = PhotoImage(file = 'tiger.gif') # self.canvas.create_image ( 700, 250, image = self.tiger) self.canvas.create_line(100, 600, 200,800, 300, 600, 100, 600) self.canvas.create_oval(400, 600, 700, 800) self.QUIT = Button(self) self.QUIT["text"] = "QUIT" self.QUIT["fg"] = "red" self.QUIT["command"] = self.quit #self.QUIT.grid(row=2, column=0) self.canvas.create_window(100, 100, window = self.QUIT) def __init__(self, master=None): Frame.__init__(self, master) self.pack() self.createWidgets() root = Tk() app = Application(master=root) app.mainloop() root.destroy()