How to set shortcut keys in Golang program

Golang is a programming language suitable for various scenarios, and its popularity continues to grow. In some scenarios, such as command line interface programs, shortcut keys can greatly improve the user experience. Let's learn how to set shortcut keys in Golang programs.

First, we need to import the github.com/eiannone/keyboard package. This package provides a convenient way to detect and handle keyboard events. For example, we can use the following code to detect whether the user pressed the Esc key:

if event.Key == keyboard.KeyEsc {
    fmt.Println("Esc has been pressed")
}

In order to set the shortcut key, we need to open the keyboard reader using the keyboard.Open() function, Handle keyboard events. The following is a sample program that sets Ctrl C as the shortcut key to exit the program:

package main

import (
    "fmt"
    "github.com/eiannone/keyboard"
)

func main() {
    // 打开键盘读取器
    err := keyboard.Open()
    if err != nil {
        panic(err)
    }
    defer keyboard.Close()

    // 设置Ctrl C 为退出程序的快捷键
    fmt.Println("Press Ctrl + C to exit.")
    for {
        char, key, err := keyboard.GetKey()
        if err != nil {
            panic(err)
        }
        if key == keyboard.KeyCtrlC {
            break
        }
        fmt.Printf("You pressed %q\r\n", char)
    }
}

In the above program, we use the keyboard.GetKey() function to get the user press keyboard events. If the user presses the Ctrl C key, the program will exit. Otherwise, the program will print the character pressed by the user.

In addition to setting a single shortcut key, we can also set multiple shortcut keys. For example, we can add the following code to the above program to set Ctrl A and Ctrl B as shortcut keys:

if key == keyboard.KeyCtrlA {
    fmt.Println("You pressed Ctrl + A")
} else if key == keyboard.KeyCtrlB {
    fmt.Println("You pressed Ctrl + B")
}

After confirming that the keyboard shortcuts are set correctly, we should test the program to ensure that it follows Expected to work. If the test passes, it can be deployed and used among users.

In short, Golang provides a convenient way to set shortcut keys through the github.com/eiannone/keyboard package, improving the user experience of command line interface programs. Hope this article is helpful to you.

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