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git.saurik.com Git - wxWidgets.git/blob - interface/wx/menu.h
1 /////////////////////////////////////////////////////////////////////////////
3 // Purpose: interface of wxMenuBar
4 // Author: wxWidgets team
6 // Licence: wxWindows license
7 /////////////////////////////////////////////////////////////////////////////
12 A menu bar is a series of menus accessible from the top of a frame.
15 To respond to a menu selection, provide a handler for EVT_MENU, in the frame
16 that contains the menu bar.
18 If you have a toolbar which uses the same identifiers as your EVT_MENU entries,
19 events from the toolbar will also be processed by your EVT_MENU event handlers.
21 Tip: under Windows, if you discover that menu shortcuts (for example, Alt-F
22 to show the file menu) are not working, check any EVT_CHAR events you are
23 handling in child windows.
24 If you are not calling event.Skip() for events that you don't process in
25 these event handlers, menu shortcuts may cease to work.
30 @see wxMenu, @ref overview_events
32 class wxMenuBar
: public wxWindow
36 Construct an empty menu bar.
39 If wxMB_DOCKABLE the menu bar can be detached (wxGTK only).
41 wxMenuBar(long style
= 0);
44 Construct a menu bar from arrays of menus and titles.
49 An array of menus. Do not use this array again - it now belongs to
52 An array of title strings. Deallocate this array after creating
55 If wxMB_DOCKABLE the menu bar can be detached (wxGTK only).
58 Not supported by wxPerl.
61 wxMenuBar(size_t n
, wxMenu
* menus
[], const wxString titles
[],
65 Destructor, destroying the menu bar and removing it from the parent
71 Adds the item to the end of the menu bar.
74 The menu to add. Do not deallocate this menu after calling Append().
76 The title of the menu.
78 @return @true on success, @false if an error occurred.
82 virtual bool Append(wxMenu
* menu
, const wxString
& title
);
85 Checks or unchecks a menu item.
88 The menu item identifier.
90 If @true, checks the menu item, otherwise the item is unchecked.
92 @remarks Only use this when the menu bar has been associated with a
93 frame; otherwise, use the wxMenu equivalent call.
95 void Check(int id
, bool check
);
98 Enables or disables (greys out) a menu item.
101 The menu item identifier.
103 @true to enable the item, @false to disable it.
105 @remarks Only use this when the menu bar has been associated with a
106 frame; otherwise, use the wxMenu equivalent call.
108 void Enable(int id
, bool enable
);
111 Enables or disables a whole menu.
114 The position of the menu, starting from zero.
116 @true to enable the menu, @false to disable it.
118 @remarks Only use this when the menu bar has been associated with a frame.
120 virtual void EnableTop(size_t pos
, bool enable
);
123 Finds the menu item object associated with the given menu item identifier.
126 Menu item identifier.
128 If not @NULL, menu will get set to the associated menu.
130 @return The found menu item object, or @NULL if one was not found.
133 In wxPerl this method takes just the @a id parameter;
134 in scalar context it returns the associated @c Wx::MenuItem, in list
135 context it returns a 2-element list (item, submenu).
138 virtual wxMenuItem
* FindItem(int id
, wxMenu
* menu
= NULL
) const;
141 Returns the index of the menu with the given @a title or @c wxNOT_FOUND if no
142 such menu exists in this menubar.
144 The @a title parameter may specify either the menu title
145 (with accelerator characters, i.e. @c "&File") or just the
146 menu label (@c "File") indifferently.
148 int FindMenu(const wxString
& title
) const;
151 Finds the menu item id for a menu name/menu item string pair.
158 @return The menu item identifier, or wxNOT_FOUND if none was found.
160 @remarks Any special menu codes are stripped out of source and target
161 strings before matching.
163 virtual int FindMenuItem(const wxString
& menuString
,
164 const wxString
& itemString
) const;
167 Gets the help string associated with the menu item identifier.
170 The menu item identifier.
172 @return The help string, or the empty string if there was no help string
173 or the menu item was not found.
177 wxString
GetHelpString(int id
) const;
180 Gets the label associated with a menu item.
183 The menu item identifier.
185 @return The menu item label, or the empty string if the item was not
188 @remarks Use only after the menubar has been associated with a frame.
190 wxString
GetLabel(int id
) const;
193 Returns the label of a top-level menu. Note that the returned string does not
194 include the accelerator characters which could have been specified in the menu
195 title string during its construction.
198 Position of the menu on the menu bar, starting from zero.
200 @return The menu label, or the empty string if the menu was not found.
202 @remarks Use only after the menubar has been associated with a frame.
205 This function is deprecated in favour of GetMenuLabel() and GetMenuLabelText().
209 wxString
GetLabelTop(size_t pos
) const;
212 Returns the menu at @a menuIndex (zero-based).
214 wxMenu
* GetMenu(size_t menuIndex
) const;
217 Returns the number of menus in this menubar.
219 size_t GetMenuCount() const;
222 Returns the label of a top-level menu. Note that the returned string
223 includes the accelerator characters that have been specified in the menu
224 title string during its construction.
227 Position of the menu on the menu bar, starting from zero.
229 @return The menu label, or the empty string if the menu was not found.
231 @remarks Use only after the menubar has been associated with a frame.
233 @see GetMenuLabelText(), SetMenuLabel()
235 virtual wxString
GetMenuLabel(size_t pos
) const;
238 Returns the label of a top-level menu. Note that the returned string does not
239 include any accelerator characters that may have been specified in the menu
240 title string during its construction.
243 Position of the menu on the menu bar, starting from zero.
245 @return The menu label, or the empty string if the menu was not found.
247 @remarks Use only after the menubar has been associated with a frame.
249 @see GetMenuLabel(), SetMenuLabel()
251 virtual wxString
GetMenuLabelText(size_t pos
) const;
254 Inserts the menu at the given position into the menu bar. Inserting menu at
255 position 0 will insert it in the very beginning of it, inserting at position
256 GetMenuCount() is the same as calling Append().
259 The position of the new menu in the menu bar
261 The menu to add. wxMenuBar owns the menu and will free it.
263 The title of the menu.
265 @return @true on success, @false if an error occurred.
269 virtual bool Insert(size_t pos
, wxMenu
* menu
, const wxString
& title
);
272 Determines whether an item is checked.
275 The menu item identifier.
277 @return @true if the item was found and is checked, @false otherwise.
279 bool IsChecked(int id
) const;
282 Determines whether an item is enabled.
285 The menu item identifier.
287 @return @true if the item was found and is enabled, @false otherwise.
289 bool IsEnabled(int id
) const;
294 virtual void Refresh(bool eraseBackground
= true, const wxRect
* rect
= NULL
);
297 Removes the menu from the menu bar and returns the menu object - the caller
298 is responsible for deleting it. This function may be used together with
299 Insert() to change the menubar dynamically.
303 virtual wxMenu
* Remove(size_t pos
);
306 Replaces the menu at the given position with another one.
309 The position of the new menu in the menu bar
313 The title of the menu.
315 @return The menu which was previously at position pos.
316 The caller is responsible for deleting it.
318 @see Insert(), Remove()
320 virtual wxMenu
* Replace(size_t pos
, wxMenu
* menu
, const wxString
& title
);
323 Sets the help string associated with a menu item.
326 Menu item identifier.
328 Help string to associate with the menu item.
332 void SetHelpString(int id
, const wxString
& helpString
);
335 Sets the label of a menu item.
338 Menu item identifier.
342 @remarks Use only after the menubar has been associated with a frame.
346 void SetLabel(int id
, const wxString
& label
);
349 Sets the label of a top-level menu.
352 The position of a menu on the menu bar, starting from zero.
356 @remarks Use only after the menubar has been associated with a frame.
359 This function has been deprecated in favour of SetMenuLabel().
363 void SetLabelTop(size_t pos
, const wxString
& label
);
366 Sets the label of a top-level menu.
369 The position of a menu on the menu bar, starting from zero.
373 @remarks Use only after the menubar has been associated with a frame.
375 virtual void SetMenuLabel(size_t pos
, const wxString
& label
);
383 A menu is a popup (or pull down) list of items, one of which may be
384 selected before the menu goes away (clicking elsewhere dismisses the
385 menu). Menus may be used to construct either menu bars or popup menus.
387 A menu item has an integer ID associated with it which can be used to
388 identify the selection, or to change the menu item in some way. A menu item
389 with a special identifier -1 is a separator item and doesn't have an
390 associated command but just makes a separator line appear in the menu.
393 Please note that @e wxID_ABOUT and @e wxID_EXIT are predefined by wxWidgets
394 and have a special meaning since entries using these IDs will be taken out
395 of the normal menus under MacOS X and will be inserted into the system menu
396 (following the appropriate MacOS X interface guideline).
397 On PalmOS @e wxID_EXIT is disabled according to Palm OS Companion guidelines.
399 Menu items may be either @e normal items, @e check items or @e radio items.
400 Normal items don't have any special properties while the check items have a
401 boolean flag associated to them and they show a checkmark in the menu when
403 wxWidgets automatically toggles the flag value when the item is clicked and its
404 value may be retrieved using either wxMenu::IsChecked method of wxMenu or
405 wxMenuBar itself or by using wxEvent::IsChecked when you get the menu
406 notification for the item in question.
408 The radio items are similar to the check items except that all the other items
409 in the same radio group are unchecked when a radio item is checked. The radio
410 group is formed by a contiguous range of radio items, i.e. it starts at the
411 first item of this kind and ends with the first item of a different kind (or
412 the end of the menu). Notice that because the radio groups are defined in terms
413 of the item positions inserting or removing the items in the menu containing
414 the radio items risks to not work correctly.
417 @section menu_allocation Allocation strategy
419 All menus except the popup ones must be created on the @b heap.
420 All menus attached to a menubar or to another menu will be deleted by their
421 parent when it is deleted.
423 As the frame menubar is deleted by the frame itself, it means that normally
424 all menus used are deleted automatically.
427 @section menu_eventhandling Event handling
429 If the menu is part of a menubar, then wxMenuBar event processing is used.
431 With a popup menu (see wxWindow::PopupMenu), there is a variety of ways to
432 handle a menu selection event (@c wxEVT_COMMAND_MENU_SELECTED):
433 - Provide @c EVT_MENU handlers in the window which pops up the menu, or in an
434 ancestor of that window (the simplest method);
435 - Derive a new class from wxMenu and define event table entries using the @c EVT_MENU macro;
436 - Set a new event handler for wxMenu, through wxEvtHandler::SetNextHandler,
437 specifying an object whose class has @c EVT_MENU entries;
439 Note that instead of static @c EVT_MENU macros you can also use dynamic
440 connection; see @ref overview_events_bind.
445 @see wxMenuBar, wxWindow::PopupMenu, @ref overview_events,
446 @ref wxFileHistory "wxFileHistory (most recently used files menu)"
448 class wxMenu
: public wxEvtHandler
452 Constructs a wxMenu object.
455 If set to wxMENU_TEAROFF, the menu will be detachable (wxGTK only).
460 Constructs a wxMenu object with a title.
463 Title at the top of the menu (not always supported).
465 If set to wxMENU_TEAROFF, the menu will be detachable (wxGTK only).
467 wxMenu(const wxString
& title
, long style
= 0);
470 Destructor, destroying the menu.
473 Under Motif, a popup menu must have a valid parent (the window
474 it was last popped up on) when being destroyed. Therefore, make sure
475 you delete or re-use the popup menu @e before destroying the parent
476 window. Re-use in this context means popping up the menu on a different
477 window from last time, which causes an implicit destruction and
478 recreation of internal data structures.
486 The menu command identifier.
488 The string to appear on the menu item.
489 See wxMenuItem::SetItemLabel() for more details.
491 An optional help string associated with the item.
492 By default, the handler for the @c wxEVT_MENU_HIGHLIGHT event displays
493 this string in the status line.
495 May be @c wxITEM_SEPARATOR, @c wxITEM_NORMAL, @c wxITEM_CHECK or @c wxITEM_RADIO.
499 m_pFileMenu->Append(ID_NEW_FILE, "&New file\tCTRL+N", "Creates a new XYZ document");
501 or even better for stock menu items (see wxMenuItem::wxMenuItem):
503 m_pFileMenu->Append(wxID_NEW, "", "Creates a new XYZ document");
507 This command can be used after the menu has been shown, as well as on
508 initial creation of a menu or menubar.
510 @see AppendSeparator(), AppendCheckItem(), AppendRadioItem(),
511 AppendSubMenu(), Insert(), SetLabel(), GetHelpString(),
512 SetHelpString(), wxMenuItem
514 wxMenuItem
* Append(int id
, const wxString
& item
= wxEmptyString
,
515 const wxString
& helpString
= wxEmptyString
,
516 wxItemKind kind
= wxITEM_NORMAL
);
521 @deprecated This function is deprecated, use AppendSubMenu() instead.
524 The menu command identifier.
526 The string to appear on the menu item.
530 An optional help string associated with the item.
531 By default, the handler for the wxEVT_MENU_HIGHLIGHT event displays
532 this string in the status line.
534 @see AppendSeparator(), AppendCheckItem(), AppendRadioItem(),
535 AppendSubMenu(), Insert(), SetLabel(), GetHelpString(),
536 SetHelpString(), wxMenuItem
538 wxMenuItem
* Append(int id
, const wxString
& item
, wxMenu
* subMenu
,
539 const wxString
& helpString
= wxEmptyString
);
542 Adds a menu item object.
544 This is the most generic variant of Append() method because it may be
545 used for both items (including separators) and submenus and because
546 you can also specify various extra properties of a menu item this way,
547 such as bitmaps and fonts.
550 A menuitem object. It will be owned by the wxMenu object after this
551 function is called, so do not delete it yourself.
554 See the remarks for the other Append() overloads.
556 @see AppendSeparator(), AppendCheckItem(), AppendRadioItem(),
557 AppendSubMenu(), Insert(), SetLabel(), GetHelpString(),
558 SetHelpString(), wxMenuItem
560 wxMenuItem
* Append(wxMenuItem
* menuItem
);
563 Adds a checkable item to the end of the menu.
565 @see Append(), InsertCheckItem()
567 wxMenuItem
* AppendCheckItem(int id
, const wxString
& item
,
568 const wxString
& help
= wxEmptyString
);
571 Adds a radio item to the end of the menu.
572 All consequent radio items form a group and when an item in the group is
573 checked, all the others are automatically unchecked.
575 @note Radio items are not supported under wxMotif.
577 @see Append(), InsertRadioItem()
579 wxMenuItem
* AppendRadioItem(int id
, const wxString
& item
,
580 const wxString
& help
= wxEmptyString
);
583 Adds a separator to the end of the menu.
585 @see Append(), InsertSeparator()
587 wxMenuItem
* AppendSeparator();
590 Adds the given @a submenu to this menu. @a text is the text shown in the
591 menu for it and @a help is the help string shown in the status bar when the
592 submenu item is selected.
594 wxMenuItem
* AppendSubMenu(wxMenu
* submenu
, const wxString
& text
,
595 const wxString
& help
= wxEmptyString
);
598 Inserts a break in a menu, causing the next appended item to appear in
601 virtual void Break();
604 Checks or unchecks the menu item.
607 The menu item identifier.
609 If @true, the item will be checked, otherwise it will be unchecked.
613 void Check(int id
, bool check
);
616 Deletes the menu item from the menu. If the item is a submenu, it will
617 @b not be deleted. Use Destroy() if you want to delete a submenu.
620 Id of the menu item to be deleted.
622 @see FindItem(), Destroy(), Remove()
627 Deletes the menu item from the menu. If the item is a submenu, it will
628 @b not be deleted. Use Destroy() if you want to delete a submenu.
631 Menu item to be deleted.
633 @see FindItem(), Destroy(), Remove()
635 bool Delete(wxMenuItem
* item
);
638 Deletes the menu item from the menu. If the item is a submenu, it will
639 be deleted. Use Remove() if you want to keep the submenu (for example,
643 Id of the menu item to be deleted.
645 @see FindItem(), Deletes(), Remove()
647 bool Destroy(int id
);
650 Deletes the menu item from the menu. If the item is a submenu, it will
651 be deleted. Use Remove() if you want to keep the submenu (for example,
655 Menu item to be deleted.
657 @see FindItem(), Deletes(), Remove()
659 bool Destroy(wxMenuItem
* item
);
662 Enables or disables (greys out) a menu item.
665 The menu item identifier.
667 @true to enable the menu item, @false to disable it.
671 void Enable(int id
, bool enable
);
674 Finds the menu item object associated with the given menu item identifier
675 and, optionally, the position of the item in the menu.
677 Unlike FindItem(), this function doesn't recurse but only looks at the
678 direct children of this menu.
681 The identifier of the menu item to find.
683 If the pointer is not @NULL, it is filled with the item's position if
684 it was found or @c (size_t)wxNOT_FOUND otherwise.
686 Menu item object or @NULL if not found.
688 wxMenuItem
*FindChildItem(int id
, size_t *pos
= NULL
) const;
691 Finds the menu id for a menu item string.
694 Menu item string to find.
696 @return Menu item identifier, or wxNOT_FOUND if none is found.
698 @remarks Any special menu codes are stripped out of source and target
699 strings before matching.
701 virtual int FindItem(const wxString
& itemString
) const;
704 Finds the menu item object associated with the given menu item identifier and,
705 optionally, the (sub)menu it belongs to.
708 Menu item identifier.
710 If the pointer is not @NULL, it will be filled with the item's
711 parent menu (if the item was found)
713 @return Menu item object or NULL if none is found.
715 wxMenuItem
* FindItem(int id
, wxMenu
** menu
= NULL
) const;
718 Returns the wxMenuItem given a position in the menu.
720 wxMenuItem
* FindItemByPosition(size_t position
) const;
723 Returns the help string associated with a menu item.
726 The menu item identifier.
728 @return The help string, or the empty string if there is no help string
729 or the item was not found.
731 @see SetHelpString(), Append()
733 virtual wxString
GetHelpString(int id
) const;
736 Returns a menu item label.
739 The menu item identifier.
741 @return The item label, or the empty string if the item was not found.
743 @see GetLabelText(), SetLabel()
745 wxString
GetLabel(int id
) const;
748 Returns a menu item label, without any of the original mnemonics and
752 The menu item identifier.
754 @return The item label, or the empty string if the item was not found.
756 @see GetLabel(), SetLabel()
758 wxString
GetLabelText(int id
) const;
761 Returns the number of items in the menu.
763 size_t GetMenuItemCount() const;
767 Returns the list of items in the menu.
769 wxMenuItemList is a pseudo-template list class containing wxMenuItem
770 pointers, see wxList.
772 wxMenuItemList
& GetMenuItems() const;
773 const wxMenuItemList
& GetMenuItems() const;
777 Returns the title of the menu.
779 @remarks This is relevant only to popup menus, use
780 wxMenuBar::GetMenuLabel for the menus in the menubar.
784 const wxString
& GetTitle() const;
787 Inserts the given @a item before the position @a pos.
789 Inserting the item at position GetMenuItemCount() is the same
792 @see Append(), Prepend()
794 wxMenuItem
* Insert(size_t pos
, wxMenuItem
* item
);
797 Inserts the given @a item before the position @a pos.
799 Inserting the item at position GetMenuItemCount() is the same
802 @see Append(), Prepend()
804 wxMenuItem
* Insert(size_t pos
, int id
,
805 const wxString
& item
= wxEmptyString
,
806 const wxString
& helpString
= wxEmptyString
,
807 wxItemKind kind
= wxITEM_NORMAL
);
810 Inserts a checkable item at the given position.
812 @see Insert(), AppendCheckItem()
814 wxMenuItem
* InsertCheckItem(size_t pos
, int id
, const wxString
& item
,
815 const wxString
& helpString
= wxEmptyString
);
818 Inserts a radio item at the given position.
820 @see Insert(), AppendRadioItem()
822 wxMenuItem
* InsertRadioItem(size_t pos
, int id
, const wxString
& item
,
823 const wxString
& helpString
= wxEmptyString
);
826 Inserts a separator at the given position.
828 @see Insert(), AppendSeparator()
830 wxMenuItem
* InsertSeparator(size_t pos
);
833 Determines whether a menu item is checked.
836 The menu item identifier.
838 @return @true if the menu item is checked, @false otherwise.
842 bool IsChecked(int id
) const;
845 Determines whether a menu item is enabled.
848 The menu item identifier.
850 @return @true if the menu item is enabled, @false otherwise.
854 bool IsEnabled(int id
) const;
857 Inserts the given @a item at position 0, i.e. before all the other
860 @see Append(), Insert()
862 wxMenuItem
* Prepend(wxMenuItem
* item
);
865 Inserts the given @a item at position 0, i.e. before all the other
868 @see Append(), Insert()
870 wxMenuItem
* Prepend(int id
, const wxString
& item
= wxEmptyString
,
871 const wxString
& helpString
= wxEmptyString
,
872 wxItemKind kind
= wxITEM_NORMAL
);
875 Inserts a checkable item at position 0.
877 @see Prepend(), AppendCheckItem()
879 wxMenuItem
* PrependCheckItem(int id
, const wxString
& item
,
880 const wxString
& helpString
= wxEmptyString
);
883 Inserts a radio item at position 0.
885 @see Prepend(), AppendRadioItem()
887 wxMenuItem
* PrependRadioItem(int id
, const wxString
& item
,
888 const wxString
& helpString
= wxEmptyString
);
891 Inserts a separator at position 0.
893 @see Prepend(), AppendSeparator()
895 wxMenuItem
* PrependSeparator();
898 Removes the menu item from the menu but doesn't delete the associated C++
899 object. This allows you to reuse the same item later by adding it back to
900 the menu (especially useful with submenus).
903 The identifier of the menu item to remove.
905 @return A pointer to the item which was detached from the menu.
907 wxMenuItem
* Remove(int id
);
910 Removes the menu item from the menu but doesn't delete the associated C++
911 object. This allows you to reuse the same item later by adding it back to
912 the menu (especially useful with submenus).
915 The menu item to remove.
917 @return A pointer to the item which was detached from the menu.
919 wxMenuItem
* Remove(wxMenuItem
* item
);
922 Sets an item's help string.
925 The menu item identifier.
927 The help string to set.
931 virtual void SetHelpString(int id
, const wxString
& helpString
);
934 Sets the label of a menu item.
937 The menu item identifier.
939 The menu item label to set.
941 @see Append(), GetLabel()
943 void SetLabel(int id
, const wxString
& label
);
946 Sets the title of the menu.
951 @remarks This is relevant only to popup menus, use
952 wxMenuBar::SetLabelTop for the menus in the menubar.
956 virtual void SetTitle(const wxString
& title
);
959 Sends events to @a source (or owning window if @NULL) to update the
962 This is called just before the menu is popped up with wxWindow::PopupMenu,
963 but the application may call it at other times if required.
965 void UpdateUI(wxEvtHandler
* source
= NULL
);