📜  Tk-图片

📅  最后修改于: 2020-10-16 06:35:32             🧑  作者: Mango


图像小部件用于创建和处理图像。创建图像的语法如下-

image create type name options

在上面的语法中,类型是照片或位图,名称是图像标识符。

选件

下表中列出了可用于图像创建的选项-

Sr.No. Syntax & Description
1

-file fileName

The name of the image file name.

2

-height number

Used to set height for widget.

3

-width number

Sets the width for widget.

4

-data string

Image in base 64 encoded string.

图像小部件的一个简单示例如下所示-

#!/usr/bin/wish

image create photo imgobj -file "/Users/rajkumar/Desktop/F Drive/pictur/vb/Forests/
   680049.png" -width 400 -height 400 
pack [label .myLabel]
.myLabel configure -image imgobj 

当我们运行上面的程序时,我们将获得以下输出-

图片范例

下表列出了可用的图像函数-

Sr.No. Syntax & Description
1

image delete imageName

Deletes the image from memory and related widgets visually.

2

image height imageName

Returns the height for image.

3

image width imageName

Returns the width for image.

4

image type imageName

Returns the type for image.

5

image names

Returns the list of images live in memory.

下面显示了一个使用上述图像小部件命令的简单示例-

#!/usr/bin/wish

image create photo imgobj -file "/Users/rajkumar/images/680049.png"
   -width 400 -height 400 
pack [label .myLabel]
.myLabel configure -image imgobj
puts [image height imgobj]
puts [image width imgobj]
puts [image type imgobj]
puts [image names]
image delete imgobj

一旦执行“ image delete imgobj”命令,该图像将通过视觉方式从内存中删除。在控制台中,输出将如下所示:

400
400
photo
imgobj ::tk::icons::information ::tk::icons::error ::tk::icons::
warning ::tk::icons::question