scroll_bar.h

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#pragma once
#include "control.h"

namespace xtd {
  namespace forms {
    class forms_export_ scroll_bar : public control {
      struct data;
      
    public:
      
      virtual int32 large_change() const noexcept;
      virtual scroll_bar& large_change(int32 large_change);
      
      virtual int32 maximum() const noexcept;
      virtual scroll_bar& maximum(int32 maximum);
      
      virtual int32 minimum() const noexcept;
      virtual scroll_bar& minimum(int32 minimum);
      
      virtual int32 small_change() const noexcept;
      virtual scroll_bar& small_change(int32 small_change);
      
      virtual int32 value() const noexcept;
      virtual scroll_bar& value(int32 value);
      
      
      event<scroll_bar, event_handler> scroll;
      
      event<scroll_bar, event_handler> value_changed;
      
    protected:
      
      explicit scroll_bar(bool vertical);
      
      
      xtd::forms::create_params create_params() const noexcept override;
      
      
      void on_handle_created(const event_args& e) override;
      
      virtual void on_scroll(const event_args& e);
      
      virtual void on_value_changed(const event_args& e);
      
      void wnd_proc(message& message) override;
      
    private:
      void wm_scroll_control(message& message);
      
      std::shared_ptr<data> data_;
    };
  }
}