public CGFolder(
CGPidl pidl
)
{
Open(pidl);
}
public void Close()
{
// Should we cleanup the identifier?
if (m_pidl != null)
m_pidl.Dispose();
m_pidl = null;
// Should we cleanup the folder?
if (m_folder != null)
Marshal.ReleaseComObject(m_folder);
m_folder = null;
}
public void Open(
CGPidl pidl
)
{
// Clone the identifier.
m_pidl = (CGPidl)pidl.Clone();
// Create the folder reference.
InitializeFolder();
}
public void Open(
string fullPath
)
{
// Create the identifier.
m_pidl = new CGPidl(fullPath);
// Create the folder reference.
InitializeFolder();
}
public void Open(
Environment.SpecialFolder specialFolder
)
{
// Free any open resources.
Close();
// Create the identifier.
m_pidl = new CGPidl(specialFolder);
// Create the folder reference.
InitializeFolder();
}
public System.Collections.ArrayList GetChildren(
bool showHiddenObjects,
bool showNonFolders,
bool sortResults
)
{
ArrayList children = new ArrayList();
NativeMethods.IEnumIDList enumList = null;
try
{
// Sanity check the folder before attempting to use it.
if (m_pidl == null || !m_pidl.IsFolder || m_folder == null)
return children;
// Get the enumerator for the object.
int hr = m_folder.EnumObjects(
IntPtr.Zero,
NativeMethods.SHCONTF.SHCONTF_FOLDERS |
(showNonFolders ?
NativeMethods.SHCONTF.SHCONTF_NONFOLDERS : 0) |
(showHiddenObjects ?
NativeMethods.SHCONTF.SHCONTF_INCLUDEHIDDEN : 0),
out enumList
);
// Did we fail?
if (hr != 0)
Marshal.ThrowExceptionForHR(hr);
IntPtr pidl = IntPtr.Zero;
int fetched = 0;
// Loop and walk through the child objects.
while (enumList.Next(1, ref pidl, out fetched) == 0 &&
fetched == 1)
{
// Create a new identifier for the object.
CGPidl child = new CGPidl(
m_pidl.Pidl,
pidl
);
// Add the object to the array.
children.Add(child);
} // End while there are more child objects.
// Should we sort the results?
if (sortResults)
children.Sort();
} // End try
finally
{
// Should we cleanup the enumerator reference?
if (enumList != null)
Marshal.ReleaseComObject(enumList);
enumList = null;
} // End finally
// Return the list of children.
return children;
}
public object Clone()
{
// Clone the object.
CGPidl pidl = new CGPidl();
pidl.m_pidl = NativeMethods.ILClone(m_pidl);
pidl.m_displayName = m_displayName;
pidl.m_typeName = m_typeName;
pidl.m_attributes = m_attributes;
pidl.m_physicalPath = m_physicalPath;
// Return the clone.
return pidl;
}
