public class Screen    {        /// Primary Screen                #region Win32 API        [DllImport("user32.dll")]        static extern IntPtr GetDC(IntPtr ptr);        [DllImport("gdi32.dll")]        static extern int GetDeviceCaps(        IntPtr hdc, // handle to DC        int nIndex // index of capability        );        [DllImport("user32.dll", EntryPoint = "ReleaseDC")]        static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDc);        #endregion        #region DeviceCaps常量        const int HORZRES = 8;        const int VERTRES = 10;        const int LOGPIXELSX = 88;        const int LOGPIXELSY = 90;        const int DESKTOPVERTRES = 117;        const int DESKTOPHORZRES = 118;        #endregion        #region 属性        /// 
        /// 获取屏幕分辨率当前物理大小        /// 
        public static Size WorkingArea        {            get            {                IntPtr hdc = GetDC(IntPtr.Zero);                Size size = new Size();                size.Width = GetDeviceCaps(hdc, HORZRES);                size.Height = GetDeviceCaps(hdc, VERTRES);                ReleaseDC(IntPtr.Zero, hdc);                return size;            }        }        /// 
        /// 当前系统DPI_X 大小 一般为96        /// 
        public static int DpiX        {            get            {                IntPtr hdc = GetDC(IntPtr.Zero);                int DpiX = GetDeviceCaps(hdc, LOGPIXELSX);                ReleaseDC(IntPtr.Zero, hdc);                return DpiX;            }        }        /// 
        /// 当前系统DPI_Y 大小 一般为96        /// 
        public static int DpiY        {            get            {                IntPtr hdc = GetDC(IntPtr.Zero);                int DpiX = GetDeviceCaps(hdc, LOGPIXELSY);                ReleaseDC(IntPtr.Zero, hdc);                return DpiX;            }        }        /// 
        /// 获取真实设置的桌面分辨率大小        /// 
        public static Size DESKTOP        {            get            {                IntPtr hdc = GetDC(IntPtr.Zero);                Size size = new Size();                size.Width = GetDeviceCaps(hdc, DESKTOPHORZRES);                size.Height = GetDeviceCaps(hdc, DESKTOPVERTRES);                ReleaseDC(IntPtr.Zero, hdc);                return size;            }        }        /// 
        /// 获取宽度缩放百分比        /// 
        public static float ScaleX        {            get            {                IntPtr hdc = GetDC(IntPtr.Zero);                int t = GetDeviceCaps(hdc, DESKTOPHORZRES);                int d = GetDeviceCaps(hdc, HORZRES);                float ScaleX = (float)GetDeviceCaps(hdc, DESKTOPHORZRES) / (float)GetDeviceCaps(hdc, HORZRES);                ReleaseDC(IntPtr.Zero, hdc);                return ScaleX;            }        }        /// 
        /// 获取高度缩放百分比        /// 
        public static float ScaleY        {            get            {                IntPtr hdc = GetDC(IntPtr.Zero);                float ScaleY = (float)(float)GetDeviceCaps(hdc, DESKTOPVERTRES) / (float)GetDeviceCaps(hdc, VERTRES);                ReleaseDC(IntPtr.Zero, hdc);                return ScaleY;            }        }        #endregion    }