取得屏幕刷新率

using System;
using System.Runtime.InteropServices;


namespace ConsoleApplication
{

public sealed class EntryPoint
{
private EntryPoint(){}

[DllImport("Gdi32.dll", CharSet=CharSet.Auto, ExactSpelling=true)]
public static extern int GetDeviceCaps(IntPtr hDC,int nIndex);

/**//// <summary>
/// 获得屏幕刷新率
/// </summary>
public static int RefreshRate
{
get
{
IntPtr desktopDC = GetDC(GetDesktopWindow());
return GetDeviceCaps(desktopDC,116);
}
}

[DllImport("User32.dll")] 
public extern static IntPtr GetDesktopWindow();  

[DllImport("User32.dll")]
public static extern IntPtr GetDC(IntPtr hWnd);

static void Main()
{
Console.WriteLine("屏幕刷新率为: {0}Hz",RefreshRate);
Console.ReadLine();
}
}
}