欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

python tkinter canvas 显示图片的示例

程序员文章站 2023-12-05 11:31:52
先来看一下该方法的说明 create_image(position, **options) [#] draws an image on the canvas....

先来看一下该方法的说明

create_image(position, **options) [#]
draws an image on the canvas.

position
image position, given as two coordinates.
**options
image options.
activeimage=
anchor=
where to place the image relative to the given position. default is center.
disabledimage=
image=
the image object. this should be a photoimage or bitmapimage, or a compatible object (such as the pil photoimage). the application must keep a reference to the image object.
state=
item state. one of normal, disabled, or hidden.
tags=
a tag to attach to this item, or a tuple containing multiple tags.
returns:
the item id.

关于image有两个重要的点要注意,一个是格式,第二是要保持持续引用

the image object. this should be a

1.this should be a photoimage or bitmapimage, or a compatible object (such as the pil photoimage).

2.the application must keep a reference to the image object.

因此代码应该这样写,并且变量im应该是全局变量

image = image.open("img.jpg") 
im = imagetk.photoimage(image) 

canvas.create_image(300,50,image = im) 

但如果我就是想要在方法里调用怎么办?

那么可以提前声明全局变量

image = none
im = none

之后在方法里使用global来声明变量为全局变量

即:

def method():
  global image
  global im
  image = image.open("img.jpg") 
  im = imagetk.photoimage(image) 
  ...

以上这篇python tkinter canvas 显示图片的示例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。