/// <summary>
/// Gets the icon for the given path (file or folder).
/// </summary>
/// <param name="path">Path to file or folder.</param>
/// <param name="smallIcon">True to get the small icon, false for large icon.</param>
/// <param name="isDirectory">True if path is directory, otherwise false.</param>
/// <param name="isOpen">True if path id directory and the open directory icon is wanted.</param>
/// <returns>The icon for the given path.</returns>
public static Icon GetIcon(string path, bool smallIcon, bool isDirectory, bool isOpen)
{
var flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
var attribute = isDirectory ? Shell32.FILE_ATTRIBUTE_DIRECTORY : Shell32.SHGFI_ICONLOCATION;
flags += (smallIcon) ? Shell32.SHGFI_SMALLICON : Shell32.SHGFI_LARGEICON;
if (isDirectory && isOpen)
{
flags += Shell32.SHGFI_OPENICON;
}
var shfi = new Shell32.ShFileInfo {
szDisplayName = string.Empty, szTypeName = string.Empty
};
var res = Shell32.SHGetFileInfo(Marshal.StringToBSTR(path), attribute, ref shfi, (uint)Marshal.SizeOf(shfi), flags);
if (Equals(res, IntPtr.Zero))
{
throw Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
}
try
{
Icon.FromHandle(shfi.hIcon);
return((Icon)Icon.FromHandle(shfi.hIcon).Clone());
}
catch
{
return(null);
}
finally
{
User32.DestroyIcon(shfi.hIcon);
}
}
/// <summary>
/// Gets an image source for the given special folder.
/// </summary>
/// <param name="folder">Special folder.</param>
/// <param name="smallIcon">True for small icon, otherwise false.</param>
/// <returns>The image source of the icon for the requested special folder.</returns>
public static ImageSource GetSpecialFolderIcon(Environment.SpecialFolder folder, bool smallIcon)
{
var shfi = new Shell32.ShFileInfo {
szDisplayName = string.Empty, szTypeName = string.Empty
};
var ptrDir = IntPtr.Zero;
Shell32.SHGetSpecialFolderLocation(IntPtr.Zero, GetSpecialFolderCsidl(folder), ref ptrDir);
var flags = Shell32.SHGFI_ICON | Shell32.SHGFI_PIDL;
flags += (smallIcon) ? Shell32.SHGFI_SMALLICON : Shell32.SHGFI_LARGEICON;
var res = Shell32.SHGetFileInfo(ptrDir, 0, ref shfi, (uint)Marshal.SizeOf(shfi), flags);
if (Equals(res, IntPtr.Zero))
{
throw Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
}
Marshal.FreeCoTaskMem(ptrDir);
var icon = (Icon)Icon.FromHandle(shfi.hIcon).Clone();
User32.DestroyIcon(shfi.hIcon);
var image = Imaging.CreateBitmapSourceFromHIcon(icon.Handle,
new Int32Rect(0, 0, icon.Width, icon.Height),
BitmapSizeOptions.FromEmptyOptions());
icon.Dispose();
return(image);
}