Basic knowledge of Linux: use Tk to write simple GUI programs

Article title: basic knowledge of Linux: use Tk to write a simple GUI program. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Tk is an extension of the GUI in The TCL programming language. it is simple and powerful. For example, you can use pico to edit text files of Tk code.

$ Pico try_tk

Then, type the following code.

#! /Usr/bin/wish

Button. my_button-text "Hello World"-command exit

Pack. my_button

The first line tells shell how to run the text file. The second line is a simple Tk code. Create a button named "my_button" and save it to the root node of the class inheritance relationship. The text "Hello World" is displayed on the button, and the exit command is executed when you press it. The second line is used to adjust the window size so that it can contain buttons.

Save the file and modify the file attributes to executable.

$ Chmod a + x try_tk

Now, you can execute the program in X Terminal.

$./Try_tk