add the HTML string of the selected item to wxSimpleHtmlListBox events (closes #10159)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57643 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/htmllbox.h

@@ -302,6 +302,14 @@ protected:
     virtual wxString OnGetItem(size_t n) const
         { return m_items[n]; }
 
+    virtual void InitEvent(wxCommandEvent& event, int n)
+        {
+            // we're not a virtual control and we can include the string
+            // of the item which was clicked:
+            event.SetString(m_items[n]);
+            wxVListBox::InitEvent(event, n);
+        }
+
     wxArrayString   m_items;
     wxArrayPtrVoid  m_HTMLclientData;