Use native DisclosureTriangle control for wxCollapsiblePane, II

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50581 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/button.h

@@ -55,5 +55,41 @@ protected:
     DECLARE_DYNAMIC_CLASS(wxButton)
 };
 
+class WXDLLEXPORT wxDisclosureTriangle: public wxControl
+{
+public:
+    wxDisclosureTriangle(wxWindow *parent,
+             wxWindowID id,
+             const wxString& label = wxEmptyString,
+             const wxPoint& pos = wxDefaultPosition,
+             const wxSize& size = wxDefaultSize,
+             long style = 0,
+             const wxValidator& validator = wxDefaultValidator,
+             const wxString& name = wxButtonNameStr)
+    {
+        Create(parent, id, label, pos, size, style, validator, name);
+    }
+
+    bool Create(wxWindow *parent,
+                wxWindowID id,
+                const wxString& label = wxEmptyString,
+                const wxPoint& pos = wxDefaultPosition,
+                const wxSize& size = wxDefaultSize,
+                long style = 0,
+                const wxValidator& validator = wxDefaultValidator,
+                const wxString& name = wxButtonNameStr);
+
+    void SetOpen( bool open );
+    bool IsOpen() const;
+    void SetLabel( const wxString &label );
+    wxString GetLabel() const;
+
+    virtual wxInt32 MacControlHit( WXEVENTHANDLERREF handler , WXEVENTREF event ) ;
+
+protected:
+    virtual wxSize DoGetBestSize() const ;
+    
+};
+
 #endif
     // _WX_BUTTON_H_