优化更新代码，添加界面功能并整合

WPFluent/Interop/WinDef/SIZE.cs

@@ -0,0 +1,32 @@
+
+
+
+/* This Source Code is partially based on reverse engineering of the Windows Operating System,
+   and is intended for use on Windows systems only.
+   This Source Code is partially based on the source code provided by the .NET Foundation. */
+
+using System.Runtime.InteropServices;
+
+namespace WPFluent.Interop.WinDef;
+
+// ReSharper disable InconsistentNaming
+#pragma warning disable SA1307 // Accessible fields should begin with upper-case letter
+
+/// <summary>
+/// The SIZE structure defines the width and height of a rectangle.
+/// </summary>
+[StructLayout(LayoutKind.Sequential)]
+public struct SIZE
+{
+    /// <summary>
+    /// Specifies the rectangle's width. The units depend on which function uses this structure.
+    /// </summary>
+    public long cx;
+
+    /// <summary>
+    /// Specifies the rectangle's height. The units depend on which function uses this structure.
+    /// </summary>
+    public long cy;
+}
+
+#pragma warning restore SA1307 // Accessible fields should begin with upper-case letter