Implement wxSpinCtrl::GetTextValue() for wxQt too

include/wx/qt/spinctrl.h

@@ -29,6 +29,7 @@ public:
         T min, T max, T initial, T inc,
         const wxString& name );
 
+    virtual wxString GetTextValue() const wxOVERRIDE;
     virtual void SetValue(const wxString&) wxOVERRIDE {}
 
     virtual void SetSnapToTicks(bool snap_to_ticks) wxOVERRIDE;

src/qt/spinctrl.cpp

@@ -58,6 +58,12 @@ bool wxSpinCtrlQt< T, Widget >::Create( wxWindow *parent, wxWindowID id,
     return QtCreateControl( parent, id, pos, size, style, wxDefaultValidator, name );
 }
 
+template< typename T, typename Widget >
+wxString wxSpinCtrlQt< T, Widget >::GetTextValue() const
+{
+    return wxQtConvertString(m_qtSpinBox->text());
+}
+
 template< typename T, typename Widget >
 void wxSpinCtrlQt< T, Widget >::SetValue( T val )
 {