add IsOk() (closes #9872)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58383 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/msw/ole/automtn.h

@@ -81,6 +81,16 @@ public:
     */
     bool CreateInstance(const wxString& classId) const;
 
+    /**
+        Checks if the object is in a valid state.
+
+        Returns @true if the object was successfully initialized or @false if
+        it has no valid IDispatch pointer.
+
+        @see GetDispatchPtr()
+     */
+    bool IsOk() const;
+
     /**
         Gets the IDispatch pointer.
     */