added the static function GetLabelText() to wxStaticText which was mentioned in the docs but not implemented; also fixed the return type documented for wxControl::GetLabel*() functions

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47880 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/stattextcmn.cpp

@@ -154,6 +154,14 @@ wxString wxStaticTextBase::GetLabelText() const
     return RemoveMnemonics(ret);
 }
 
+/*static*/
+wxString wxStaticTextBase::GetLabelText(const wxString& label)
+{
+    // remove markup
+    wxString ret = RemoveMarkup(label);
+    return RemoveMnemonics(ret);
+}
+
 /*static*/
 wxString wxStaticTextBase::RemoveMarkup(const wxString& text)
 {