xtd - Reference Guide  0.1.1
Modern c++17/20 framework to create console, GUI and unit test applications on Windows, macOS, Linux, iOS and android.
choice.h
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1 #pragma once
6 #include "list_control.h"
7 
9 namespace xtd {
11  namespace forms {
26  public:
28  choice();
29 
30  virtual drawing::size default_size() const override {return {121, 23};}
31 
35  object_collection& items() {return items_;}
38  const object_collection& items() const {return items_;}
41  const choice& items(const object_collection& items) {
42  items_ = items;
43  return *this;
44  }
45 
49  list_control& selected_index(size_t selected_index) override;
50 
53  const item& selected_item() const {return selected_item_;}
56  choice& selected_item(const item& selected_item);
57 
61  virtual bool sorted() const {return sorted_;}
65  virtual choice& sorted(bool sorted);
66 
67  using list_control::text;
70  control& text(const xtd::ustring& text) override {return *this;}
71 
74  void begin_update();
77  void end_update();
78 
79  protected:
80  forms::create_params create_params() const override;
81 
82  void on_handle_created(const event_args& e) override;
83 
84  void on_selected_value_changed(const event_args& e) override;
85 
86  void set_bounds_core(int32_t x, int32_t y, int32_t width, int32_t height, bounds_specified specified) override;
87 
88  void set_client_size_core(int32_t width, int32_t height) override;
89 
90  void wnd_proc(message& message) override;
91 
95 
99 
102  virtual void wm_mouse_down(message& message);
103 
106  virtual void wm_mouse_up(message& message);
107 
109  object_collection items_;
110  item selected_item_;
111  bool sorted_ = false;
112  bool user_set_size_ = false;
114  };
115  }
116 }
Contains xtd::forms::arranged_element_collection collection.
Stores an ordered pair of integers, which specify a height and width.
Definition: size.h:25
Represents the base class for classes that contain event data, and provides a value to use for events...
Definition: event_args.h:18
Represents a choice control.
Definition: choice.h:25
virtual bool sorted() const
Gets a value indicating whether the items in the choice are sorted.
Definition: choice.h:61
virtual void wm_mouse_down(message &message)
Processes the mouse down message the choice control receives from the top-level window.
virtual void wm_mouse_double_click(message &message)
Processes the mouse double-click message the choice control receives from the top-level window.
virtual drawing::size default_size() const override
Gets the default size of the control.
Definition: choice.h:30
virtual void wm_reflect_command(message &message)
Processes the command message the choice control receives from the top-level window.
void on_selected_value_changed(const event_args &e) override
Raises the list_control::selected_value_changed event.
const object_collection & items() const
Gets an object representing the collection of the items contained in this choice.
Definition: choice.h:38
object_collection & items()
Gets an object representing the collection of the items contained in this choice.
Definition: choice.h:35
void on_handle_created(const event_args &e) override
Raises the control::handle_created event.
void end_update()
Resumes painting the choice control after painting is suspended by the begin_update method.
void begin_update()
Maintains performance while items are added to the choice one at a time by preventing the control fro...
forms::create_params create_params() const override
Gets the required creation parameters when the control handle is created.
void set_bounds_core(int32_t x, int32_t y, int32_t width, int32_t height, bounds_specified specified) override
Performs the work of setting the specified bounds of this control.
choice & selected_item(const item &selected_item)
Sets currently selected item in the choice.
control & text(const xtd::ustring &text) override
Sets the text associated with this control.
Definition: choice.h:70
void set_client_size_core(int32_t width, int32_t height) override
Sets the size of the client area of the control.
virtual choice & sorted(bool sorted)
Sets a value indicating whether the items in the choice are sorted.
void wnd_proc(message &message) override
Processes Windows messages.
virtual void wm_mouse_up(message &message)
Processes the mouse up message the choice control receives from the top-level window.
const item & selected_item() const
Gets currently selected item in the choice.
Definition: choice.h:53
const choice & items(const object_collection &items)
Sets an object representing the collection of the items contained in this choice.
Definition: choice.h:41
list_control & selected_index(size_t selected_index) override
When overridden in a derived class, Sets the zero-based index of the currently selected item.
choice()
Initializes a new instance of the choice class.
Defines the base class for controls, which are components with visual representation.
Definition: control.h:67
virtual const xtd::ustring & text() const
Gets the text associated with this control.
Definition: control.h:650
Represents a collection of objects.
Definition: arranged_element_collection.h:28
Represent an item contained in the list_control::object_collection collection.
Definition: list_control.h:22
Provides a common implementation of members for the list_box, choice and combo_box classes.
Definition: list_control.h:19
virtual size_t selected_index() const
Gets the zero-based index of the currently selected item.
Definition: list_control.h:84
Implements a Windows message.
Definition: message.h:25
Represents text as a sequence of UTF-8 code units.
Definition: ustring.h:48
#define forms_export_
Define shared library export.
Definition: forms_export.h:13
bounds_specified
Specifies the bounds of the control to use when defining a control's size and position....
Definition: bounds_specified.h:18
Contains xtd::forms::list_control control.
The xtd::forms namespace contains classes for creating Windows-based applications that take full adva...
Definition: about_box.h:13
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition: system_report.h:17