public static extern IntPtr SHGetFileInfo(
string pszPath,
uint dwFileAttributes,
out ShellFileInfo psfi,
uint cbFileInfo,
uint uFlags);
/// <summary>
/// Gets the directory or device icon.
/// </summary>
/// <param name="path">The path.</param>
/// <returns></returns>
private static byte[] GetGenericIcon(string path, bool isDirectoryOrDevice)
{
const uint SHGFI_ICON = 0x000000100;
const uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
const uint SHGFI_OPENICON = 0x000000002;
const uint SHGFI_LARGEICON = 0x000000000;
const uint FILE_ATTRIBUTE_DIRECTORY = 0x00000010;
// Get the folder icon
byte[] icon = null;
var shFileInfo = new ShellFileInfo();
unsafe
{
try
{
var flags = SHGFI_ICON | SHGFI_LARGEICON;
if (isDirectoryOrDevice)
{
flags = flags | SHGFI_USEFILEATTRIBUTES | SHGFI_OPENICON;
}
var result = SHGetFileInfo(
path,
FILE_ATTRIBUTE_DIRECTORY,
out shFileInfo,
(uint)Marshal.SizeOf(shFileInfo),
flags);
if (result == IntPtr.Zero)
{
throw Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
}
// Load the icon from an HICON handle
Icon.FromHandle(shFileInfo.hIcon);
icon = Icon.FromHandle(shFileInfo.hIcon).ToByteArray();
}
finally
{
// Clean up, since this is unmanaged code
DestroyIcon(shFileInfo.hIcon);
}
}
return icon;
}