使用C调整屏幕亮度#

看看 SetDeviceGammaRamp API函数。这里有一篇代码项目文章描述了如何使用它: Setting Screen Brightness in C#

不过,请注意,您的图形卡必须支持这一点,我想大多数现代图形卡都支持,但我不知道。

编辑:由于codeproject文章似乎已关闭,另一个从c找到如何调用它的位置位于 pInvoke site .

刚刚找到了 SetMonitorBrightness 功能打开 MSDN .

这可以调整屏幕的真实亮度,但并非所有地方都支持:

http://www.codeproject.com/Articles/236898/Screen-Brightness-Control-for-Laptops-and-Tablets

实际上你可以用 SetDeviceGammaRamp() 以C_设置屏幕亮度。

创建新的Windows窗体应用程序并复制以下代码。只需将轨迹栏和按钮拖动到窗口即可。

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using System.Windows.Forms; 
using System.Runtime.InteropServices; 
namespace brightnesscontrol 
{ 
   public partial class Form1 : Form 
   { 
       [DllImport("gdi32.dll")] 
       private unsafe static extern bool SetDeviceGammaRamp(Int32 hdc, void* ramp); 
       private static bool initialized = false; 
       private static Int32 hdc; 
       private static int a; 
       public Form1() 
       { 
           InitializeComponent(); 
       } 
       private static void InitializeClass() 
       { 
           if (initialized) 
               return; 
           hdc = Graphics.FromHwnd(IntPtr.Zero).GetHdc().ToInt32(); 
           initialized = true; 
       } 
       public static unsafe bool SetBrightness(int brightness) 
       { 
           InitializeClass(); 
           if (brightness > 255) 
               brightness = 255; 
           if (brightness < 0) 
               brightness = 0; 
           short* gArray = stackalloc short[3 * 256]; 
           short* idx = gArray; 
           for (int j = 0; j < 3; j++) 
           { 
               for (int i = 0; i < 256; i++) 
               { 
                   int arrayVal = i * (brightness + 128); 
                   if (arrayVal > 65535) 
                       arrayVal = 65535; 
                   *idx = (short)arrayVal; 
                   idx++; 
               } 
           } 
           bool retVal = SetDeviceGammaRamp(hdc, gArray); 
           return retVal; 
       } 
       private void trackBar1_Scroll(object sender, EventArgs e) 
       { 
       } 
       private void button1_Click(object sender, EventArgs e) 
       { 
           a = trackBar1.Value; 
           SetBrightness(a); 
       } 
   } 
} 

也许你需要改变轨迹条的最大和最小值。

您可以在这里学习本教程。更多图片和详细信息: http://www.lattepanda.com/topic-f11t3020.html?sid=f9dc5d65cd4f2feb3c91ca41196c087e