如何从C#查询GetMonitorBrightness [英] How to query GetMonitorBrightness from C#

问题描述

GetMonitorBrightness如何 http://msdn.microsoft.com/en-us /library/ms775205.aspx 工作吗?有人可以给我一个实际可行的实现，用C#调用此代码吗?

How does GetMonitorBrightness http://msdn.microsoft.com/en-us/library/ms775205.aspx work? Can someone give me an actual working implementation calling this code in C#?

我正在尝试检索笔记本电脑支持的允许亮度级别.

I'm trying to retrieve the allowed brightness levels my laptop supports.

我有以下工作代码将亮度设置为1至〜150.但是我正在寻找允许的输入值(最小最大值).

I have the following working code that sets the brightness from 1 to ~150. But I'm looking for the allowed input values (min max values).

    static void SetBrightness(byte targetBrightness)
    {
        ManagementScope scope = new ManagementScope("root\\WMI");
        SelectQuery query = new SelectQuery("WmiMonitorBrightnessMethods");
        using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query))
        {
            using (ManagementObjectCollection objectCollection = searcher.Get())
            {
                foreach (ManagementObject mObj in objectCollection)
                {
                    mObj.InvokeMethod("WmiSetBrightness",
                        new Object[] { UInt32.MaxValue, targetBrightness });
                    break;
                }
            }
        }
    }

推荐答案

虽然应该可以使用Interop，但也可以通过WMI使用此功能.稍微更改我的原始代码会导致以下代码正常工作:

While using Interop should be possible this function is also available through WMI. Changing my original code a bit resulted in the following code that should work:

 ManagementScope scope;
 SelectQuery query;

 scope = new ManagementScope("root\\WMI");
 query = new SelectQuery("SELECT * FROM WmiMonitorBrightness");

 using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query))
 {
    using (ManagementObjectCollection objectCollection = searcher.Get())
    {
      foreach (ManagementObject mObj in objectCollection)
      {
        Console.WriteLine(mObj.ClassPath);
        foreach (var item in mObj.Properties)
        {
          Console.WriteLine(item.Name + " " +item.Value.ToString());
          if(item.Name =="CurrentBrightness")
            //Do something with CurrentBrightness
        }
      }
    }
  }

现在，我真的很好奇如何处理非笔记本电脑屏幕这样的特殊"情况，以及它们是否以任何方式影响亮度.

Now I'm really curious how to handle 'special' cases like non laptop Screen's and if they implement any way to influence brightness.

这篇关于如何从C#查询GetMonitorBrightness的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！