public static BitmapSource GetFileIcon(string FileName, IImageListSize size, bool checkDisk)
{
var shinfo = new SHFILEINFO();
const uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
const uint SHGFI_SYSICONINDEX = 0x4000;
const int FILE_ATTRIBUTE_NORMAL = 0x80;
var flags = SHGFI_SYSICONINDEX;
if (!checkDisk) // This does not seem to work. If I try it, a folder icon is always returned.
{
flags |= SHGFI_USEFILEATTRIBUTES;
}
var res = SHGetFileInfo(FileName, FILE_ATTRIBUTE_NORMAL, ref shinfo, Marshal.SizeOf(shinfo), flags);
if (res == 0)
{
throw (new FileNotFoundException());
}
var iconIndex = shinfo.iIcon;
// Get the System IImageList object from the Shell:
var iidImageList = new Guid("46EB5926-582E-4017-9FDF-E8998DAA0950");
IImageList iml;
SHGetImageList(size, ref iidImageList, out iml);
var hIcon = IntPtr.Zero;
const int ILD_TRANSPARENT = 1;
iml.GetIcon(iconIndex, ILD_TRANSPARENT, ref hIcon);
var myIcon = Icon.FromHandle(hIcon);
var bs = IconSource(myIcon);
myIcon.Dispose();
bs.Freeze(); // very important to avoid memory leak
DestroyIcon(hIcon);
SendMessage(hIcon, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
return(bs);
}
private static extern int SHGetImageList(
IImageListSize iImageList,
ref Guid riid,
out IImageList ppv
);