scroll_bar.h

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#pragma once
#include "control.h"
 
namespace xtd {
  namespace forms {
    class forms_export_ scroll_bar : public control {
    public:
      virtual int32_t large_change() const;
      virtual scroll_bar& large_change(int32_t large_change);
      
      virtual int32_t maximum() const;
      virtual scroll_bar& maximum(int32_t maximum);
      
      virtual int32_t minimum() const;
      virtual scroll_bar& minimum(int32_t minimum);
      
      virtual int32_t small_change() const;
      virtual scroll_bar& small_change(int32_t small_change);
 
      virtual int32_t value() const;
      virtual scroll_bar& value(int32_t value);
 
      event<scroll_bar, event_handler> scroll;
      
      event<scroll_bar, event_handler> value_changed;
 
    protected:
      scroll_bar() = default;
 
      xtd::forms::create_params create_params() const 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;
      
      int32_t large_change_ = 10;
      int32_t maximum_ = 100;
      int32_t minimum_ = 0;
      int32_t small_change_ = 1;
      int32_t value_ = 0;
      bool v_scroll_ = true;
      
    private:
      void wm_scroll(message& message);
    };
  }
}