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2026-09-07 08:07:08 +08:00
commit e703fb2752
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+using System;
+using System.ComponentModel;
+using System.Drawing;
+using System.Windows.Forms;
+
+namespace JinYuan.ControlLib.UCHelper
+{
+    /// <summary>
+    /// 系统缩放比例
+    /// </summary>
+    public class DpiHelper
+    {
+        #region 公开方法
+
+        /// <summary>
+        /// 获取控件对应的系统缩放比例
+        /// </summary>
+        /// <param name="control"></param>
+        /// <returns></returns>
+        public static float GetControlDpi(Control control)
+        {
+            IntPtr hDC = IntPtr.Zero;
+            Graphics g = null;
+            ControlHelper.GetWindowClientGraphics(control.Handle, out g, out hDC);
+
+            float dpi = g.DpiX / 96f;
+
+            g.Dispose();
+            NativeMethods.ReleaseDC(control.Handle, hDC);
+
+            return dpi;
+        }
+
+        /// <summary>
+        /// 获取控件对应的系统缩放比例
+        /// </summary>
+        /// <param name="hWnd"></param>
+        /// <returns></returns>
+        public static float GetControlDpi(IntPtr hWnd)
+        {
+            IntPtr hDC = IntPtr.Zero;
+            Graphics g = null;
+            ControlHelper.GetWindowClientGraphics(hWnd, out g, out hDC);
+
+            float dpi = g.DpiX / 96f;
+
+            g.Dispose();
+            NativeMethods.ReleaseDC(hWnd, hDC);
+
+            return dpi;
+        }
+        #endregion
+    }
+}