+    m_inSetValue = true;
+
+#if wxHAS_3STATE
+    unsigned char value;
+
+    switch (state)
+    {
+    case wxCHK_UNCHECKED: value = XmUNSET; break;
+    case wxCHK_CHECKED: value = XmSET; break;
+    case wxCHK_UNDETERMINED: value = XmINDETERMINATE; break;
+    default: wxASSERT(0); return;
+    }
+
+    XtVaSetValues( (Widget) m_mainWidget,
+                   XmNset, value,
+                   NULL );
+#else
+    XmToggleButtonSetState ((Widget) m_mainWidget,
+                            state == wxCHK_CHECKED, True);
+#endif
+
+    m_inSetValue = false;
+}
+
+wxCheckBoxState wxCheckBox::DoGet3StateValue() const
+{
+#if wxHAS_3STATE
+    unsigned char value = 0;
+
+    XtVaGetValues( (Widget) m_mainWidget,
+                   XmNset, &value,
+                   NULL );
+
+    switch (value)
+    {
+    case XmUNSET: return wxCHK_UNCHECKED;
+    case XmSET: return wxCHK_CHECKED;
+    case XmINDETERMINATE: return wxCHK_UNDETERMINED;
+    }
+
+    // impossible...
+    return wxCHK_UNDETERMINED;
+#else
+    return wxCheckBoxState(XmToggleButtonGetState ((Widget) m_mainWidget));
+#endif
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// wxToggleButton
+///////////////////////////////////////////////////////////////////////////////
+
+#if wxUSE_TOGGLEBTN
+
+wxDEFINE_EVENT( wxEVT_TOGGLEBUTTON, wxCommandEvent );
+IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
+
+bool wxToggleButton::Create( wxWindow* parent, wxWindowID id,
+                             const wxString& label,
+                             const wxPoint& pos,
+                             const wxSize& size,
+                             long style,
+                             const wxValidator& val,
+                             const wxString &name )
+{
+    if( !wxCheckBox::Create( parent, id, label, pos, size, style, val, name ) )
+        return false;
+
+    XtVaSetValues( (Widget)m_mainWidget,
+                   XmNindicatorSize, 0,
+#if XmVersion >= 2000
+                   XmNindicatorOn, XmINDICATOR_NONE,
+#else
+                   XmNindicatorOn, False,
+#endif
+                   XmNfillOnSelect, False,
+                   XmNshadowThickness, 2,
+                   XmNalignment, XmALIGNMENT_CENTER,
+                   XmNmarginLeft, 0,
+                   XmNmarginRight, 0,
+                   NULL );
+
+    // set it again, because the XtVaSetValue above resets it
+    if( size.x != -1 || size.y != -1 )
+        SetSize( size );
+
+    return true;