public static Icon GetIcon(string path, ItemType type, IconSize iconSize, ItemState state)
{
var attributes = (uint)(type == ItemType.Folder ? FileAttribute.Directory : FileAttribute.File);
var flags = (uint)(ShellAttribute.Icon | ShellAttribute.UseFileAttributes);
if (type == ItemType.Folder && state == ItemState.Open)
{
flags = flags | (uint)ShellAttribute.OpenIcon;
}
if (iconSize == IconSize.Small)
{
flags = flags | (uint)ShellAttribute.SmallIcon;
}
else
{
flags = flags | (uint)ShellAttribute.LargeIcon;
}
var fileInfo = new ShellFileInfo();
var size = (uint)Marshal.SizeOf(fileInfo);
var result = Interop.SHGetFileInfo(path, attributes, out fileInfo, size, flags);
if (result == IntPtr.Zero)
{
throw Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
}
try
{
return((Icon)Icon.FromHandle(fileInfo.hIcon).Clone());
}
catch
{
throw;
}
finally
{
Interop.DestroyIcon(fileInfo.hIcon);
}
}
public static extern IntPtr SHGetFileInfo(string path,
uint attributes,
out ShellFileInfo fileInfo,
uint size,
uint flags);
