scroll_bar.hpp

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#pragma once
#include "control.hpp"

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