优化更新代码，添加界面功能并整合

WPFluent/Interop/UxTheme.cs

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+
+
+
+/* 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.
+
+   NOTE:
+   I split unmanaged code stuff into the NativeMethods library.
+   If you have suggestions for the code below, please submit your changes there.
+   https://github.com/lepoco/nativemethods */
+
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace WPFluent.Interop;
+
+// ReSharper disable IdentifierTypo
+// ReSharper disable InconsistentNaming
+#pragma warning disable SA1307 // Accessible fields should begin with upper-case letter
+#pragma warning disable CA1060 // Move pinvokes to native methods class
+
+internal static class UxTheme
+{
+    /// <summary>
+    /// Retrieves the name of the current visual style, and optionally retrieves the color scheme name and size name.
+    /// </summary>
+    /// <param name="pszThemeFileName">Pointer to a string that receives the theme path and file name.</param>
+    /// <param name="dwMaxNameChars">Value of type int that contains the maximum number of characters allowed in the theme file name.</param>
+    /// <param name="pszColorBuff">Pointer to a string that receives the color scheme name. This parameter may be set to NULL.</param>
+    /// <param name="cchMaxColorChars">Value of type int that contains the maximum number of characters allowed in the color scheme name.</param>
+    /// <param name="pszSizeBuff">Pointer to a string that receives the size name. This parameter may be set to NULL.</param>
+    /// <param name="cchMaxSizeChars">Value of type int that contains the maximum number of characters allowed in the size name.</param>
+    /// <returns>HRESULT</returns>
+    [DllImport(Libraries.UxTheme, CharSet = CharSet.Unicode)]
+    public static extern int GetCurrentThemeName(
+        [Out] StringBuilder pszThemeFileName,
+        [In] int dwMaxNameChars,
+        [Out] StringBuilder pszColorBuff,
+        [In] int cchMaxColorChars,
+        [Out] StringBuilder pszSizeBuff,
+        [In] int cchMaxSizeChars);
+    [DllImport("uxtheme.dll", EntryPoint = "#132", SetLastError = true, CharSet = CharSet.Unicode)]
+    public static extern bool ShouldAppsUseDarkMode();
+    [DllImport("uxtheme.dll", EntryPoint = "#136", SetLastError = true, CharSet = CharSet.Unicode)]
+    public static extern void FlushMenuThemes();
+
+    [DllImport("uxtheme.dll", EntryPoint = "#138", SetLastError = true, CharSet = CharSet.Unicode)]
+    public static extern bool ShouldSystemUseDarkMode();
+
+    public enum PreferredAppMode : int { Default, AllowDark, ForceDark, ForceLight, Max };
+    /// <summary>
+    /// Windows 10 1903, aka 18362, broke the API.
+    ///  - Before 18362, the #135 is AllowDarkModeForApp(BOOL)
+    ///  - After 18362, the #135 is SetPreferredAppMode(PreferredAppMode)
+    /// Since the support for AllowDarkModeForApp is uncertain, it will not be considered for use.
+    /// </summary>
+    [DllImport("uxtheme.dll", EntryPoint = "#135", SetLastError = true, CharSet = CharSet.Unicode)]
+    public static extern int SetPreferredAppMode(PreferredAppMode preferredAppMode);
+
+    /// <summary>
+    /// Tests if a visual style for the current application is active.
+    /// </summary>
+    /// <returns>
+    /// <see langword="true"/> if a visual style is enabled, and windows with visual styles applied should call
+    /// OpenThemeData to start using theme drawing services.
+    /// </returns>
+    [DllImport(Libraries.UxTheme)]
+    [return: MarshalAs(UnmanagedType.Bool)]
+    public static extern bool IsThemeActive();
+
+    /// <summary>
+    /// Sets attributes to control how visual styles are applied to a specified window.
+    /// </summary>
+    /// <param name="hWnd">
+    /// Handle to a window to apply changes to.
+    /// </param>
+    /// <param name="eAttribute">
+    /// Value of type WINDOWTHEMEATTRIBUTETYPE that specifies the type of attribute to set. The value of this parameter
+    /// determines the type of data that should be passed in the pvAttribute parameter. Can be the following value:
+    /// <list>WTA_NONCLIENT (Specifies non-client related attributes).</list> pvAttribute must be a pointer of type
+    /// WTA_OPTIONS.
+    /// </param>
+    /// <param name="pvAttribute">
+    /// A pointer that specifies attributes to set. Type is determined by the value of the eAttribute value.
+    /// </param>
+    /// <param name="cbAttribute">
+    /// Specifies the size, in bytes, of the data pointed to by pvAttribute.
+    /// </param>
+    [DllImport(Libraries.UxTheme, PreserveSig = false)]
+    public static extern void SetWindowThemeAttribute(
+        [In] IntPtr hWnd,
+        [In] WINDOWTHEMEATTRIBUTETYPE eAttribute,
+        [In] ref WTA_OPTIONS pvAttribute,
+        [In] uint cbAttribute);
+
+    /// <summary>
+    /// Returned by the GetThemeMargins function to define the margins of windows that have visual styles applied.
+    /// </summary>
+    public struct MARGINS
+    {
+        /// <summary>
+        /// Width of left border that retains its size.
+        /// </summary>
+        public int cxLeftWidth;
+
+        /// <summary>
+        /// Width of right border that retains its size.
+        /// </summary>
+        public int cxRightWidth;
+
+        /// <summary>
+        /// Height of top border that retains its size.
+        /// </summary>
+        public int cyTopHeight;
+
+        /// <summary>
+        /// Height of bottom border that retains its size.
+        /// </summary>
+        public int cyBottomHeight;
+    }
+
+    /// <summary>
+    /// Specifies the type of visual style attribute to set on a window.
+    /// </summary>
+    public enum WINDOWTHEMEATTRIBUTETYPE : uint
+    {
+        /// <summary>
+        /// Non-client area window attributes will be set.
+        /// </summary>
+        WTA_NONCLIENT = 1,
+    }
+
+    /// <summary>
+    /// WindowThemeNonClientAttributes
+    /// </summary>
+    [Flags]
+    public enum WTNCA : uint
+    {
+        /// <summary>
+        /// Prevents the window caption from being drawn.
+        /// </summary>
+        NODRAWCAPTION = 0x00000001,
+
+        /// <summary>
+        /// Prevents the system icon from being drawn.
+        /// </summary>
+        NODRAWICON = 0x00000002,
+
+        /// <summary>
+        /// Prevents the system icon menu from appearing.
+        /// </summary>
+        NOSYSMENU = 0x00000004,
+
+        /// <summary>
+        /// Prevents mirroring of the question mark, even in right-to-left (RTL) layout.
+        /// </summary>
+        NOMIRRORHELP = 0x00000008,
+
+        /// <summary>
+        /// A mask that contains all the valid bits.
+        /// </summary>
+        VALIDBITS = NODRAWCAPTION | NODRAWICON | NOMIRRORHELP | NOSYSMENU,
+    }
+
+    /// <summary>
+    /// Defines options that are used to set window visual style attributes.
+    /// </summary>
+    [StructLayout(LayoutKind.Explicit)]
+    public struct WTA_OPTIONS
+    {
+        /// <summary>
+        /// A combination of flags that modify window visual style attributes. Can be a combination of the WTNCA
+        /// constants.
+        /// </summary>
+        [FieldOffset(0)]
+        public WTNCA dwFlags;
+
+        /// <summary>
+        /// A bitmask that describes how the values specified in dwFlags should be applied. If the bit corresponding to
+        /// a value in dwFlags is 0, that flag will be removed. If the bit is 1, the flag will be added.
+        /// </summary>
+        [FieldOffset(4)]
+        public WTNCA dwMask;
+
+        // public static readonly uint Size = (uint)Marshal.SizeOf(typeof(WTA_OPTIONS));
+        public const uint Size = 8;
+    }
+}
+
+#pragma warning restore SA1307 // Accessible fields should begin with upper-case letter
+#pragma warning restore CA1060 // Move pinvokes to native methods class