public static Pidl Create(Pidl pidl)
{
if (pidl == null)
{
return(null);
}
IntPtr pidlNew = IntPtr.Zero;
LowLevelPidlWorks.Duplicate(pidl._pidl, out pidlNew);
return(new Pidl(pidlNew));
}
private static void GetChildren(IntPtr pidl, bool getFolders, bool getFiles, ref Pidl[] _children)
{
NativeMethods.IShellFolder folder = null;
if (LowLevelPidlWorks.GetSize(pidl) <= 2)
{
if (NativeMethods.SHGetDesktopFolder(out folder) != 0)
{
return;
}
}
else
{
GetIShellFolderForPidl(pidl, out folder);
}
if (folder == null)
{
return;
}
try
{
NativeMethods.IEnumIDList enumIdList = null;
ArrayList items = new ArrayList();
if (getFolders)
{
uint itemsToInclude = NativeMethods.SHCONTF_FOLDERS /* | WinApiProvider.SHCONTF.SHCONTF_INCLUDEHIDDEN*/;
if (folder.EnumObjects(IntPtr.Zero, itemsToInclude, out enumIdList) == S_OK)
{
try
{
IntPtr newPidl = IntPtr.Zero;
IntPtr fetched = IntPtr.Zero;
enumIdList.Reset();
while (enumIdList.Next(1, out newPidl, out fetched) == 0)
{
IntPtr pidlConcat = IntPtr.Zero;
LowLevelPidlWorks.Concatenate(pidl, newPidl, out pidlConcat);
NativeMethods.CoTaskMemFree(newPidl);
Pidl item = new Pidl(pidlConcat, PidlType.Folder);
items.Add(item);
newPidl = IntPtr.Zero;
}
}
finally
{
Marshal.ReleaseComObject(enumIdList);
}
}
}
if (getFiles)
{
uint itemsToInclude = NativeMethods.SHCONTF_NONFOLDERS /*| WinApiProvider.SHCONTF.SHCONTF_INCLUDEHIDDEN | WinApiProvider.SHCONTF.SHCONTF_STORAGE*/;
if (folder.EnumObjects(IntPtr.Zero, itemsToInclude, out enumIdList) == S_OK)
{
try
{
IntPtr newPidl = IntPtr.Zero;
IntPtr fetched = IntPtr.Zero;
enumIdList.Reset();
while (enumIdList.Next(1, out newPidl, out fetched) == 0)
{
IntPtr pidlConcat = IntPtr.Zero;
LowLevelPidlWorks.Concatenate(pidl, newPidl, out pidlConcat);
NativeMethods.CoTaskMemFree(newPidl);
if (LowLevelPidlWorks.HasSuchAttributes(pidlConcat, NativeMethods.SFGAO_STREAM))
{
Pidl item = new Pidl(pidlConcat, PidlType.File);
items.Add(item);
}
else
{
NativeMethods.CoTaskMemFree(pidlConcat);
}
newPidl = IntPtr.Zero;
}
}
finally
{
Marshal.ReleaseComObject(enumIdList);
}
}
}
_children = new Pidl[items.Count];
for (int i = 0; i < _children.Length; i++)
{
_children[i] = (Pidl)items[i];
}
}
finally
{
Marshal.ReleaseComObject(folder);
}
}
/// <summary>
/// Internal Pidl object constructor.
/// </summary>
/// <param name="pidl">File or Folder PIDL.</param>
private Pidl(IntPtr pidl)
{
this._pidl = pidl;
this._type = LowLevelPidlWorks.IsStreamable(pidl) ? PidlType.File : PidlType.Folder;
}
