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How to set eye protection mode in golang

Apr 21, 2023 pm 02:18 PM

随着电脑的普及,人们每天都要面对屏幕,长时间盯着电脑不仅会对眼睛造成伤害,还容易导致身体不适。为了保护眼睛,许多软件都提供了护眼模式。而这次我们介绍的是如何通过golang设置护眼模式。

首先,我们需要了解一下什么是护眼模式。通常情况下,护眼模式主要通过减弱屏幕中的蓝光来减轻对眼睛的刺激。市面上的护眼软件一般都是通过调整屏幕色温或者屏幕亮度,达到减少蓝光的目的。

那么在golang中,我们该如何设置护眼模式呢?其实很简单,只需要调整窗口的背景色即可。在Windows平台上,我们可以利用winapi中的SetClassLong函数来设置窗口的背景色。

import (
  "syscall"
)

const (
  GCL_HBRBACKGROUND = -10
  COLOR_BACKGROUND = 1
  COLOR_WINDOW = 5
)

func SetBackgroundColor(hwnd syscall.Handle, color uintptr) {
  syscall.SetClassLong(hwnd, GCL_HBRBACKGROUND, color)
}
Copy after login

通过SetClassLong函数设置窗口的背景色,就可以实现简单的护眼模式了。我们可以将窗口背景色设为黄色、绿色等颜色,来减少蓝光的刺激。

import (
  "syscall"
)

const (
  GCL_HBRBACKGROUND = -10
  COLOR_BACKGROUND = 1
  COLOR_WINDOW = 5
)

func SetBackgroundColor(hwnd syscall.Handle, color uintptr) {
  syscall.SetClassLong(hwnd, GCL_HBRBACKGROUND, color)
}

func main() {
  hwnd := syscall.GetConsoleWindow()
  SetBackgroundColor(hwnd, uintptr(COLOR_BACKGROUND))
}
Copy after login

以上代码演示了如何将控制台窗口的背景色设置为黑色,以达到护眼的目的。

同时,在Windows 10版本中,系统也提供了自带的护眼模式。我们可以通过读写注册表来开启或关闭系统自带的护眼模式。

import (
  "syscall"
  "golang.org/x/sys/windows/registry"
)

func SetSystemNightMode(enable bool) error {
  key, err := registry.OpenKey(registry.CURRENT_USER, `SOFTWARE\Microsoft\Windows\CurrentVersion\CloudStore`, registry.ALL_ACCESS)
  if err != nil {
    return err
  }
  const (
    subkey      = `$$windows.data.bluelightreduction.bluelightreductionstate\Current`
    valueName   = "Data"
    enabledData = "01 00 00 00"
    disabledData = "00 00 00 00"
  )
  var data string
  if enable {
    data = enabledData
  } else {
    data = disabledData
  }
  err = key.SetBinaryValue(subkey+"\\"+valueName, []byte(data))
  if err != nil {
    return err
  }

  return nil
}

func main() {
  SetSystemNightMode(true)
}
Copy after login

通过读写注册表,我们可以轻松开启或关闭系统自带的护眼模式,提高我们日常工作的舒适度。

总结来说,护眼模式不仅可以有效减少对眼睛的刺激,也有助于我们减少长时间使用电脑所带来的身体不适。golang作为一种高效、简洁的编程语言,通过简单易懂的代码,我们可以轻松地实现护眼模式功能。

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