Let's talk about how to use the walk library in golang

Go programming language is a language that has grown rapidly in recent years and is increasingly used in application development. In the Go language, many library functions are provided to facilitate developers, including the walk library.

Walk library provides a cross-platform graphical user interface (GUI) library that can be used to develop desktop-based applications. The library is available for Windows and Linux operating systems and is easy to use. Let’s start with how to use this library.

The first step is to install the walk library

Since the walk library is a third-party library of the Go language, you need to install it first. The installation method is as follows:

go get github.com/lxn/walk

The above command will automatically download the walk library from GitHub and install it. After the installation is complete, add the walk library to your code ：

import "github.com/lxn/walk"

The second step is to create your first form

Create a new hello.go file and write the following code:

package main

import (
    "fmt"
    "github.com/lxn/walk"
    . "github.com/lxn/walk/declarative"
)

func main() {
    var mainWindow *walk.MainWindow

    err := MainWindow{
        Title:   "Hello World",
        MinSize: Size{Width: 300, Height: 200},
        Layout:  VBox{},
        Children: []Widget{
            Label{
                Text: "Hello, world!",
            },
            PushButton{
                Text: "Click Me!",
                OnClicked: func() {
                    fmt.Println("Button Clicked!")
                },
            },
        },
    }.Create(&mainWindow)

    if err != nil {
        fmt.Println(err)
        return
    }

    mainWindow.Run()
}

Run the program:

go run hello.go

If all goes well, you should see a window with a label and a button.

The third step, write a more complex application

Next, we will write a slightly more complex application: a button and A window with a text box. When the user clicks the button, a message will be displayed in the text box.

package main

import (
    "github.com/lxn/walk"
    . "github.com/lxn/walk/declarative"
)

func main() {
    var inTE *walk.TextEdit
    var outTE *walk.TextEdit

    MainWindow{
        Title:   "Hello Golang",
        MinSize: Size{Width: 300, Height: 200},
        Layout:  VBox{},
        Children: []Widget{
            TextEdit{
              AssignTo: &inTE,
              ReadOnly: false,
            },
            TextEdit{
              AssignTo: &outTE,
              ReadOnly: true,
              Text:     "Click the 'Say Hi' button to see a greeting.",
            },
            PushButton{
              Text: "Say Hi",
              OnClicked: func(){
                userMessage := inTE.Text()
                greeting := "Hello, " + userMessage + "!"
                outTE.SetText(greeting)
              },
            },
        },
    }.Run()
}

The operation process of this application is as follows:

1. The user enters his or her name in the text box
2. The user clicks the "Say Hi" button
3. The program generates a greeting based on the name entered by the user and displays it in another text box

The above are just some simple examples,Walk The library also provides many other components and tools to flexibly meet different needs. If you want to know more about the Walk library, please refer to the official documentation.

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