restructure projects

ShellExtensions/Interop/HandlerNativeMethods.cs

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+using ShellExtensions.Interop.Common;
+using System;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+
+namespace ShellExtensions.Interop
+{
+    internal static class HandlerNativeMethods
+    {
+        internal static readonly Guid IThumbnailProviderGuid = new Guid("e357fccd-a995-4576-b01f-234630154e96");
+
+        internal static readonly Guid IInitializeWithFileGuid = new Guid("b7d14566-0509-4cce-a71f-0a554233bd9b");
+        internal static readonly Guid IInitializeWithStreamGuid = new Guid("b824b49d-22ac-4161-ac8a-9916e8fa3f7f");
+        //internal static readonly Guid IInitializeWithItemGuid = new Guid("7f73be3f-fb79-493c-a6c7-7ee14e245841");
+
+        internal static readonly Guid IMarshalGuid = new Guid("00000003-0000-0000-C000-000000000046");
+    }
+
+    #region Interfaces
+
+    /// <summary>
+    /// ComVisible interface for native IThumbnailProvider
+    /// </summary>
+    [ComImport]
+    [Guid("e357fccd-a995-4576-b01f-234630154e96")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    interface IThumbnailProvider
+    {
+        /// <summary>
+        /// Gets a pointer to a bitmap to display as a thumbnail
+        /// </summary>
+        /// <param name="squareLength"></param>
+        /// <param name="bitmapHandle"></param>
+        /// <param name="bitmapType"></param>
+        void GetThumbnail(uint squareLength, [Out] out IntPtr bitmapHandle, [Out] out uint bitmapType);
+    }
+
+    /// <summary>
+    /// Provides means by which to initialize with a file.
+    /// </summary>
+    [ComImport]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    [Guid("b7d14566-0509-4cce-a71f-0a554233bd9b")]
+    interface IInitializeWithFile
+    {
+        /// <summary>
+        /// Initializes with a file.
+        /// </summary>
+        /// <param name="filePath"></param>
+        /// <param name="fileMode"></param>
+        void Initialize([MarshalAs(UnmanagedType.LPWStr)] string filePath, AccessModes fileMode);
+    }
+
+    /// <summary>
+    /// Provides means by which to initialize with a stream.
+    /// </summary>
+    [ComImport]
+    [Guid("b824b49d-22ac-4161-ac8a-9916e8fa3f7f")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    interface IInitializeWithStream
+    {
+        /// <summary>
+        /// Initializes with a stream.
+        /// </summary>
+        /// <param name="stream"></param>
+        /// <param name="fileMode"></param>
+        void Initialize(IStream stream, AccessModes fileMode);
+    }
+
+    #endregion
+
+    // <summary>
+    /// Thumbnail Alpha Types
+    /// </summary>
+    public enum ThumbnailAlphaType
+    {
+        /// <summary>
+        /// Let the system decide.
+        /// </summary>
+        Unknown = 0,
+
+        /// <summary>
+        /// No transparency
+        /// </summary>
+        NoAlphaChannel = 1,
+
+        /// <summary>
+        /// Has transparency
+        /// </summary>
+        HasAlphaChannel = 2,
+    }
+}