X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2fd4a52415273bce03708dcdd7af4a4e2523f540..dcb6cbecc890c65e15ade46ca416b4c353bb7e8f:/include/wx/propgrid/propgridpagestate.h

diff --git a/include/wx/propgrid/propgridpagestate.h b/include/wx/propgrid/propgridpagestate.h
index 95909a3b40..f895366389 100644
--- a/include/wx/propgrid/propgridpagestate.h
+++ b/include/wx/propgrid/propgridpagestate.h
@@ -234,7 +234,8 @@ private:
     } \
     const CLASS& operator=( const CLASS& it ) \
     { \
-        Assign(it); \
+        if (this != &it) \
+            Assign(it); \
         return *this; \
     } \
     CLASS& operator++() { Next(); return *this; } \
@@ -289,6 +290,23 @@ public:
                             const wxPGProperty,
                             const wxPropertyGridPageState)
 
+    /**
+        Additional copy constructor.
+    */
+    wxPropertyGridConstIterator( const wxPropertyGridIterator& other )
+    {
+        Assign(other);
+    }
+
+    /**
+        Additional assignment operator.
+    */
+    const wxPropertyGridConstIterator& operator=( const wxPropertyGridIterator& it )
+    {
+        Assign(it);
+        return *this;
+    }
+
 protected:
 };
 
@@ -342,9 +360,12 @@ public:
 #ifndef SWIG
     const wxPGVIterator& operator=( const wxPGVIterator& it )
     {
-        UnRef();
-        m_pIt = it.m_pIt;
-        m_pIt->IncRef();
+        if (this != &it)
+        {
+            UnRef();
+            m_pIt = it.m_pIt;
+            m_pIt->IncRef();
+        }
         return *this;
     }
 #endif