//internal static string getParentParseName(PIDL pidl)
//{
// PIDL relPIDL;
// PIDL parentPIDL = getParentPIDL(pidl, out relPIDL);
// IShellFolder sf = getParentIShellFolder(parentPIDL, out relPIDL);
// if (relPIDL.Size == 0)
// return IOTools.IID_Desktop;
// return loadName(sf, relPIDL, ShellAPI.SHGNO.FORPARSING);
//}
internal static ShellFolder2 getParentIShellFolder(PIDL pidl, out PIDL relPIDL)
{
int hr;
IntPtr ptrShellFolder = IntPtr.Zero;
if (pidl.Size == 0 || PIDL.ILFindLastID(pidl.Ptr) == pidl.Ptr || //is root or parent is root
PIDLToPath(pidl) == Environment.GetFolderPath(Environment.SpecialFolder.Desktop))
{
hr = ShellAPI.SHGetDesktopFolder(out ptrShellFolder);
relPIDL = new PIDL(pidl, true);
}
else
{
PIDL parentPIDL = getParentPIDL(pidl, out relPIDL);
//Console.WriteLine("ParentPIDL.Size = {0}", parentPIDL.Size);
Guid guid = ShellAPI.IID_IShellFolder2;
using (ShellFolder2 _desktopShellFolder = getDesktopShellFolder())
hr = _desktopShellFolder.BindToObject(parentPIDL.Ptr, IntPtr.Zero,
ref guid, out ptrShellFolder);
if (parentPIDL != null)
{
parentPIDL.Free();
}
}
if (hr == ShellAPI.S_OK && ptrShellFolder != IntPtr.Zero)
{
return(new ShellFolder2(ptrShellFolder));
}
Marshal.ThrowExceptionForHR(hr);
return(null); //mute error.
}
internal static PIDL getRelativePIDL(PIDL pidl)
{
if (pidl == null)
{
return(null);
}
IntPtr pRelPIDL = PIDL.ILFindLastID(pidl.Ptr);
if (pRelPIDL == IntPtr.Zero)
{
throw new IOException("getRelativePIDL");
}
return(new PIDL(pRelPIDL, true)); //0.21
}