+#ifndef _WX_SCROLBAR_H_BASE_
+#define _WX_SCROLBAR_H_BASE_
+
+#include "wx/defs.h"
+
+#if wxUSE_SCROLLBAR
+
+#include "wx/control.h"
+
+extern WXDLLIMPEXP_DATA_CORE(const char) wxScrollBarNameStr[];
+
+// ----------------------------------------------------------------------------
+// wxScrollBar: a scroll bar control
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxScrollBarBase : public wxControl
+{
+public:
+ wxScrollBarBase() { }
+
+ /*
+ Derived classes should provide the following method and ctor with the
+ same parameters:
+
+ bool Create(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos = wxDefaultPosition,
+ const wxSize& size = wxDefaultSize,
+ long style = wxSB_HORIZONTAL,
+ const wxValidator& validator = wxDefaultValidator,
+ const wxString& name = wxScrollBarNameStr);
+ */
+
+ // accessors
+ virtual int GetThumbPosition() const = 0;
+ virtual int GetThumbSize() const = 0;
+ virtual int GetPageSize() const = 0;
+ virtual int GetRange() const = 0;
+
+ bool IsVertical() const { return (m_windowStyle & wxVERTICAL) != 0; }
+
+ // operations
+ virtual void SetThumbPosition(int viewStart) = 0;
+ virtual void SetScrollbar(int position, int thumbSize,
+ int range, int pageSize,
+ bool refresh = true) = 0;
+
+ // implementation-only
+ bool IsNeeded() const { return GetRange() > GetThumbSize(); }
+
+private:
+ wxDECLARE_NO_COPY_CLASS(wxScrollBarBase);
+};
+
+#if defined(__WXUNIVERSAL__)
+ #include "wx/univ/scrolbar.h"
+#elif defined(__WXMSW__)
+ #include "wx/msw/scrolbar.h"