本人实测证明在Window操作系统可以正常使用。

using System;
using System.Drawing;
using System.Runtime.InteropServices;

namespace XYDES
{
public class PrimaryScreen
{
#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
    /// <summary>
    /// 获取屏幕分辨率当前物理大小
    /// </summary>
       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;    
            }
        }
    /// <summary>
       /// 当前系统DPI_X 大小 一般为96
    /// </summary>
        public static int DpiX
        {
            get
            {
                IntPtr hdc = GetDC(IntPtr.Zero);
                int DpiX = GetDeviceCaps(hdc, LOGPIXELSX );
                ReleaseDC(IntPtr.Zero, hdc);
                return DpiX;
            }
        }
    /// <summary>
    /// 当前系统DPI_Y 大小 一般为96
    /// </summary>
        public static int DpiY
        {
            get
            {
                IntPtr hdc = GetDC(IntPtr.Zero);
                int DpiX = GetDeviceCaps(hdc,LOGPIXELSY);
                ReleaseDC(IntPtr.Zero, hdc);
                return DpiX;
            }
        }
    /// <summary>
        /// 获取真实设置的桌面分辨率大小
    /// </summary>
        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;    
            }
        }

        /// <summary>
        /// 获取宽度缩放百分比
        /// </summary>
        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;
            }
        }
        /// <summary>
        /// 获取高度缩放百分比
        /// </summary>
        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
}

}

版权声明:本文为CSDN博主「kkbinkbi」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/kkbinkbi/article/details/67636930

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