什么API调用，我会用它来改变笔记本电脑（.NET）的亮度？ [英] What API call would I use to change brightness of laptop (.NET)?

问题描述

我在Windows Server 2008上安装了一台索尼​​笔记本电脑和亮度控制不起作用。我想编写一个程序，让我去改变它。

I have Windows Server 2008 installed on a Sony laptop and the brightness control doesn't work. I'd like to write a program to allow me to change it.

目前我所要做的就是打开电源控制面板上，点击高级设置，并通过这么多的UAC​​框打，任何人都看着我必须想我完全疯了。

Currently what I have to do is open the Power control panel, click advanced settings, and fight through so many UAC boxes that anybody watching me must think I'm completely crazy.

我只想要一个简单的小程序来做到这一点，但我不知道什么叫API

I just want a simple little program to do it but i dont know what API to call

推荐答案

我抬头一看<一href="http://stackoverflow.com/questions/373297/what-api-call-would-i-use-to-change-brightness-of-laptop-net/373308#373308">John鲁迪的链接 WmiSetBrightness MSDN中，并提出了这一点：

I looked up John Rudy's link to WmiSetBrightness in MSDN and came up with this:

ManagementClass mclass = new ManagementClass("WmiMonitorBrightnessMethods");
mclass.Scope = new ManagementScope(@"\\.\root\wmi");
ManagementObjectCollection instances = mclass.GetInstances();

// I assume you get one instance per monitor
foreach(ManagementObject instance in instances)
{
    ulong timeout = 1; // in seconds
    ushort brightness = 50; // in percent
    object[] args = new object[] { timeout, brightness };
    instance.InvokeMethod("WmiSetBrightness", args);
}

注： ManagementClass ， ManagementObjectCollection 和的ManagementObject 所有实施的IDisposable 。你应该叫的Dispose（），或者使用使用，以避免泄露的资源。

Note: ManagementClass, ManagementObjectCollection, and ManagementObject all implement IDisposable. You should call Dispose() or use "using" to avoid leaking resources.

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