// used internally for the base undo manager (parent for all others)
private void GetUndoManager()
{
if (oleUndoManagerInstance == null)
{
Interop.IOleServiceProvider serviceProvider = _editor.GetActiveDocument(false) as Interop.IOleServiceProvider;
Guid undoManagerGuid = typeof(Interop.IOleUndoManager).GUID;
Guid undoManagerGuid2 = typeof(Interop.IOleUndoManager).GUID;
IntPtr undoManagerPtr;
int hr = serviceProvider.QueryService(ref undoManagerGuid2, ref undoManagerGuid, out undoManagerPtr);
if ((hr == Interop.S_OK) && (undoManagerPtr != Interop.NullIntPtr))
{
oleUndoManagerInstance = (Interop.IOleUndoManager)Marshal.GetObjectForIUnknown(undoManagerPtr);
Debug.WriteLine(oleUndoManagerInstance.GetHashCode(), "MANAGER INSTANCE");
Marshal.Release(undoManagerPtr);
}
else
{
throw new ExecutionEngineException("Component threw an internal exception creating Undo manager.");
}
}
}
private bool RegisterNamespaceWithEditor(string namespaceName)
{
if (_namespaceTable == null)
{
Interop.IOleServiceProvider interop_IOleServiceProvider = _editor.GetActiveDocument(true) as Interop.IOleServiceProvider;
Guid guid1 = typeof(Interop.IElementNamespaceTable).GUID;
Guid guid2 = guid1;
IntPtr i;
if (interop_IOleServiceProvider != null && interop_IOleServiceProvider.QueryService(ref guid1, ref guid2, out i) == 0 && i != Interop.NullIntPtr)
{
_namespaceTable = (Interop.IElementNamespaceTable)Marshal.GetObjectForIUnknown(i);
Marshal.Release(i);
}
else
{
// cannot register, document not ready
return(false);
}
}
if (_namespaceTable == null)
{
return(false);
}
object local = this;
try
{
_namespaceTable.AddNamespace(namespaceName, null, 2, ref local);
return(true);
}
catch (Exception)
{
bool flag = false;
return(flag);
}
}