Merge branch 'updateui-ischeckable'

Add a flag to wxUpdateUIEvent to tell if the item supports the check
action.

See https://github.com/wxWidgets/wxWidgets/pull/2027

include/wx/aui/auibar.h

@@ -211,6 +211,11 @@ public:
     void SetAlignment(int l) { m_alignment = l; }
     int GetAlignment() const { return m_alignment; }
 
+    bool CanBeToggled() const
+    {
+        return m_kind == wxITEM_CHECK || m_kind == wxITEM_RADIO;
+    }
+
 private:
 
     wxWindow* m_window;          // item's associated window

include/wx/event.h

@@ -2892,6 +2892,7 @@ public:
         m_setShown =
         m_setText =
         m_setChecked = false;
+        m_isCheckable = true;
     }
     wxUpdateUIEvent(const wxUpdateUIEvent& event)
         : wxCommandEvent(event),
@@ -2902,6 +2903,7 @@ public:
           m_setShown(event.m_setShown),
           m_setText(event.m_setText),
           m_setChecked(event.m_setChecked),
+          m_isCheckable(event.m_isCheckable),
           m_text(event.m_text)
     { }
 
@@ -2919,6 +2921,10 @@ public:
     void Show(bool show) { m_shown = show; m_setShown = true; }
     void SetText(const wxString& text) { m_text = text; m_setText = true; }
 
+    // A flag saying if the item can be checked. True by default.
+    bool IsCheckable() const { return m_isCheckable; }
+    void DisallowCheck() { m_isCheckable = false; }
+
     // Sets the interval between updates in milliseconds.
     // Set to -1 to disable updates, or to 0 to update as frequently as possible.
     static void SetUpdateInterval(long updateInterval) { sm_updateInterval = updateInterval; }
@@ -2951,6 +2957,7 @@ protected:
     bool          m_setShown;
     bool          m_setText;
     bool          m_setChecked;
+    bool          m_isCheckable;
     wxString      m_text;
 #if wxUSE_LONGLONG
     static wxLongLong       sm_lastUpdate;