示例#1
0
        /// <summary>
        /// Used to access system folder icons.
        /// </summary>
        /// <param name="size">Specify large or small icons.</param>
        /// <param name="folderType">Specify open or closed FolderType.</param>
        /// <returns>System.Drawing.Icon</returns>
        public static Icon GetFolderIcon(IconSize size, FolderType folderType)
        {
            // Need to add size check, although errors generated at present!
            uint flags = NativeMethodsShell32.SHGFI_ICON | NativeMethodsShell32.SHGFI_USEFILEATTRIBUTES;

            if (FolderType.Open == folderType)
            {
                flags += NativeMethodsShell32.SHGFI_OPENICON;
            }

            if (IconSize.Small == size)
            {
                flags += NativeMethodsShell32.SHGFI_SMALLICON;
            }
            else
            {
                flags += NativeMethodsShell32.SHGFI_LARGEICON;
            }

            // Get the folder icon
            NativeMethodsShell32.SHFILEINFO shfi = new NativeMethodsShell32.SHFILEINFO();
            NativeMethodsShell32.SHGetFileInfo(System.AppDomain.CurrentDomain.BaseDirectory,
                                               NativeMethodsShell32.FILE_ATTRIBUTE_DIRECTORY,
                                               ref shfi,
                                               (uint)Marshal.SizeOf(shfi),
                                               flags);

            System.Drawing.Icon.FromHandle(shfi.hIcon); // Load the icon from an HICON handle

            // Now clone the icon, so that it can be successfully stored in an ImageList
            Icon icon = (Icon)Icon.FromHandle(shfi.hIcon).Clone();

            NativeMethodsUser32.DestroyIcon(shfi.hIcon); // Cleanup
            return(icon);
        }
示例#2
0
        /// <summary>
        /// Returns an icon for a given file - indicated by the name parameter.
        /// </summary>
        /// <param name="name">Pathname for file.</param>
        /// <param name="size">Large or small</param>
        /// <param name="linkOverlay">Whether to include the link icon</param>
        /// <returns>System.Drawing.Icon</returns>
        public static Icon GetFileIcon(string name, IconSize size, bool linkOverlay)
        {
            NativeMethodsShell32.SHFILEINFO shfi = new NativeMethodsShell32.SHFILEINFO();
            uint flags = NativeMethodsShell32.SHGFI_ICON | NativeMethodsShell32.SHGFI_USEFILEATTRIBUTES;

            if (linkOverlay)
            {
                flags |= NativeMethodsShell32.SHGFI_LINKOVERLAY;
            }

            /* Check the size specified for return. */
            if (IconSize.Small == size)
            {
                flags |= NativeMethodsShell32.SHGFI_SMALLICON;
            }
            else
            {
                flags |= NativeMethodsShell32.SHGFI_LARGEICON;
            }

            NativeMethodsShell32.SHGetFileInfo(name,
                                               NativeMethodsShell32.FILE_ATTRIBUTE_NORMAL,
                                               ref shfi,
                                               (uint)Marshal.SizeOf(shfi),
                                               flags);

            // Copy (clone) the returned icon to a new object, thus allowing us to clean-up properly
            System.Drawing.Icon icon = (System.Drawing.Icon)System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
            NativeMethodsUser32.DestroyIcon(shfi.hIcon); // Cleanup
            return(icon);
        }