public HResult GetParent(out IShellItem ppsi)
{
IntPtr pidl = Shell32.ILClone(_pidl);
if (ILShell32.ILRemoveLastID(pidl))
{
ppsi = new ShellItemImpl(pidl, true);
return(HResult.S_OK);
}
else
{
ppsi = null;
return(HResult.MK_E_NOOBJECT);
}
}
public int Compare(IShellItem psi, SICHINT hint)
{
ShellItemImpl other = (ShellItemImpl)psi;
ShellItemImpl myParent = GetParent();
ShellItemImpl theirParent = other.GetParent();
if (Shell32.ILIsEqual(myParent._pidl, theirParent._pidl))
{
return(myParent.GetIShellFolder().CompareIDs(
// (SHCIDS)
(IntPtr)hint,
ILShell32.ILFindLastID(_pidl),
ILShell32.ILFindLastID(other._pidl)));
}
else
{
return(1);
}
}