Added the conversion to unspecfied_bool to all smart pointers, added T& operator* to wxObjectDataPtr

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51118 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/weakref.tex

@@ -50,7 +50,6 @@ difference between the two base classes is that wxTrackableBase
 has no virtual member functions (no VTable), and thus cannot be detected
 through \texttt{dynamic\_cast<>}.
 
-
 \wxheading{Predefined types}
 
 The following types of weak references are predefined: 
@@ -70,6 +69,10 @@ wxTrackerNode
 
 <weakref.h>
 
+\wxheading{See also}
+
+\helpref{wxSharedPtr}{wxsharedptr}, \helpref{wxScopedPtr}{wxscopedptrtemplate}
+
 \wxheading{Data structures}
 
 {\small% 
@@ -102,6 +105,15 @@ Destructor.
 
 Returns pointer to the tracked object or NULL.
 
+\membersection{wxWeakRef<T>::operator unspecified\_bool\_type}\label{wxweakrefoperatorbool}
+
+\constfunc{}{operator unspecified\_bool\_type}{\void}
+
+Conversion to a boolean expression (in a variant which is not 
+convertable to anything but a boolean expression). If this class
+contains a valid pointer it will return {\it true}, if it contains
+a NULL pointer it will return {\it false}.
+
 
 \membersection{wxWeakRef<T>::operator*}\label{wxweakrefoperatorreft}