1pod::Prima::Menu(3)   User Contributed Perl Documentation  pod::Prima::Menu(3)
2
3
4

NAME

6       Prima::Menu - pull-down and pop-up menu objects
7

SYNOPSIS

9          use Prima;
10          use Prima::Application;
11
12          my $window = Prima::Window-> new(
13               menuItems => [
14                  [ '~File' => [
15                     [ '~Open', 'Ctrl+O', '^O', \&open_file ],
16                     [ '-save_file', '~Save', km::Ctrl | ord('s'), sub { save_file() } ],
17                     [],
18                     [ '~Exit', 'Alt+X', '@X', sub { exit } ],
19                  ]],
20                  [ '~Options' => [
21                     [ '*option1'  => 'Checkable option' => sub { $_[0]-> menu-> toggle( $_[1]) }],
22                     [ '*@option2' => 'Checkable option' => sub {}], # same
23                  ]],
24                  [],
25                  [ '~Help' => [
26                     [ 'Show help' => sub { $::application-> open_help("file://$0"); }],
27                  ]],
28               ],
29           );
30
31           sub open_file
32           {
33               # enable 'save' menu item
34               $window-> menu-> save_file-> enable;
35           }
36
37           $window-> popupItems( $window-> menuItems);
38

DESCRIPTION

40       The document describes interfaces of Prima::AbstractMenu class, and its
41       three descendants - Prima::Menu, Prima::Popup, and Prima::AccelTable,
42       all aimed at different targets.  Prima::AbstractMenu is a descendant of
43       Prima::Component class, and its specialization is handling of menu
44       items, held in a tree-like structure. Descendants of
45       Prima::AbstractMenu are designed to be attached to widgets and windows,
46       to serve as hints for the system-dependent pop-up and pull-down menus.
47

USAGE

49   Menu items
50       The central point of functionality in Prima::AbstractMenu-derived
51       classes and their object instances ( further referred as 'menu classes'
52       and 'menu objects'), is handling of a complex structure, contained in
53       "::items" property. This property is special in that its structure is a
54       tree-like array of scalars, each of whose is either a description of a
55       menu item or a reference to an array.
56
57       Parameters of an array must follow a special syntax, so the property
58       input can be parsed and assigned correctly. In general, the syntax is
59
60          $menu-> items( [
61             [ menu item description ],
62             [ menu item description ],
63             ...
64          ]);
65
66       where 'menu item description' is an array of scalars, that can hold
67       from 0 up to 6 elements. Each menu item has six fields, that qualify a
68       full description of a menu item; the shorter arrays are shortcuts, that
69       imply default or special cases. These base six fields are:
70
71       Menu item name
72           A string identifier.  Menu items can be accessed individually by
73           their names, and the following fields can be managed by calling
74           elemental properties, that require an item name. If not given, or
75           empty, item name is assigned a string in a form '#ID' where ID is
76           the unique integer value within the menu object.
77
78           IDs are set for each menu item, disregarding whether they have
79           names or not.  Any menu item can be uniquely identifed by its ID
80           value, by supplying the '#ID' string, in the same fashion as named
81           menu items.  When creating or copying menu items, names in format
82           '#ID' are not accepted, and treated as if an empty string is
83           passed. When copying menu items to another menu object, all menu
84           items to be copied change their IDs, but explicitly set names are
85           preserved.  Since the anonymous menu items do not have name, their
86           auto-generated names change also.
87
88           If the name is prepended by special characters ( see below ), these
89           characters are not treated as part of the name but as an item
90           modifier.  This syntax is valid only for "::items" and "insert()"
91           functions, not for "set_variable()" method.
92
93           "-" - item is disabled
94           "*" - item is checked
95           "@" - item is using auto-toggling
96           "?" - item is customly drawn
97               Expects "onMeasure" and "onPaint" callbacks in "options"
98
99           "(" and ")" - radio group
100               Items marked with parentheses are treated as a part of a group,
101               where only a single item can be checked. Checking and
102               unchecking happens automatically.
103
104               A group is only valid for the same level where it was opened on
105               (i.e. submenus don't inherit it).  A group is automatically
106               terminated on a separator item. If that is not desired, mark it
107               as "(" too (consequent "(" are allowed):
108
109                   [ '(one' ... ]
110                   [ 'two' ... ]
111                   [ '(' ],
112                   [ ')last' ... ]
113
114               When user hits an already checked item, nothing happens.
115               However, when combined with auto-toggling (i.e. marked with
116               "(@"), a checked item becomes unchecked, thus the group can
117               present a state where no items are checked, too.
118
119               See also: "group"
120
121       Menu text / menu image
122           A non-separator menu item can be visualized either as a text string
123           or an image. These options are exclusive to each other, and
124           therefore occupy same field. Menu text is an arbitrary string, with
125           with ~ ( tilde ) quoting for a shortcut character, that the system
126           uses as a hot key during menu navigation.  Menu image is a
127           Prima::Image object of no particular color space and dimensions.
128
129           Note: tilde-marked character is also used in navigation for custom
130           drawn menu items, even though they not necessarily draw the text
131           itself.
132
133           Menu text in menu item is accessible via the "::text" property, and
134           menu image via the "::image" property. These can not accept or
135           return sensible arguments simultaneously.
136
137       Accelerator text
138           An alternate text string, appearing together with a menu item or a
139           menu image, usually serving as a description to the hot key,
140           associated with a menu item. For example, if a hot key to a menu
141           item is combination of 'enter' and 'control' keys, then usually
142           accelerator text is 'Ctrl+Enter' string.
143
144           Accelerator text in menu item is accessible via "::accel" property.
145
146           NB: There is "Prima::KeySelector::describe" function, that converts
147           a key value to a string in human-readable format.
148
149       Hot key
150           An integer value, combined from either "kb::XXX" constant or a
151           character index with modificator key values ( "km::XXX" constant ).
152           This representation format is not that informative as three-integer
153           key event format (CODE,KEY,MOD), described in Prima::Widget.
154           However, these formats are easily converted to each other:
155           CODE,KEY,MOD is translated to INTEGER format by "translate_key()"
156           method. The reverse operation is not needed for
157           "Prima::AbstractMenu" functionality and is performed by
158           "Prima::KeySelector::translate_codes" method.
159
160           The integer value can be given in a some more readable format when
161           submitting to "::items". Character and F-keys (from F1 to F16) can
162           be used literally, without "kb::" prepending, and the modificator
163           keys can be hinted as prefix characters: km::Shift as '#', km::Ctrl
164           as '^' and km::Alt as '@'. This way, combination of 'control' and
165           'G' keys can be expressed as '^G' literal, and
166           'control'+'shift'+'F10' - as '^#F10'.
167
168           Hot key in menu item is accessible via "::key" property. The
169           property does accept literal key format, described above.
170
171           A literal key string can be converted to an integer value by
172           "translate_shortcut" method.
173
174           When the user presses the key combination, that matches to hot key
175           entry in a menu item, its action is triggered.
176
177       Action
178           Every non-separator and non-submenu item is destined to perform an
179           action. The action can be set either as an anonymous sub, or as
180           string with name of a method on the owner of a menu object. Both
181           have their niche of usage, and both are supplied with three
182           parameters, when called - the owner of a menu object, the name of a
183           menu item, that triggered the action, and the menu checked status:
184
185              Prima::MainWindow-> new(
186                   menuItems => [
187                           ['@item', 'Test',
188                           sub {
189                               my (
190                                  $window,  # MainWindow
191                                  $item,    # 'item'
192                                  $checked  # MainWindow->men('item')->checked
193                               ) = @_;
194                           }],
195                   ]
196              );
197
198           Action scalar in menu item is accessible via "::action" property.
199
200           A special built-in action can automatically toggle a menu item,
201           instead of an explicit call
202
203              $window->menu->toggle($item)
204
205           To achieve this, add '@' character to the menu item name (see "Menu
206           item name").
207
208       Options
209           At last, non-separator menu items can hold an extra hash in
210           "options" property.  The toolkit reserves the following keys for
211           internal use:
212
213           group INTEGER
214               Same as "group" property.
215
216           icon HANDLE
217               Uses to replace default check mark bitmap on a menu item
218
219           onMeasure MENUITEM, REF
220               Required when custom painting is set. It is called when system
221               needs to query menu item dimensions. "REF" is a 2-item arrayref
222               that needs to be set with pixel dimension.
223
224           onPaint MENUITEM, CANVAS, SELECTED, X1, Y1, X2, Y2
225               Required when custom painting is set. It is called whenever
226               system needs to draw a menu item. X1 - Y2 are coordinates of
227               the rectangle where the drawing is allowed.
228
229       Syntax of "::items" does not provide 'disabled' and 'checked' states
230       for a menu item as separate fields. These states can be set by using
231       '-' and '*' prefix characters, as described above, in "Menu item name".
232       They also can be assigned on per-item basis via "::enabled" and
233       "::checked" properties.
234
235       All these fields qualify a most common menu item, that has text,
236       shortcut key and an action - a 'text item'.  However, there are also
237       two other types of menu items - a sub-menu and separator. The type of a
238       menu items can not be changed except by full menu item tree change
239       functions ( "::items", "remove()", "insert()".
240
241       Sub-menu item can hold same references as text menu item does, except
242       the action field. Instead, the action field is used for a sub-menu
243       reference scalar, pointing to another set of menu item description
244       arrays. From that point of view, syntax of "::items" can be more
245       elaborated and shown as
246
247          $menu-> items( [
248             [ text menu item description ],
249             [ sub-menu item description [
250
251                [ text menu item description ],
252                [ sub-menu item description [
253                    [ text menu item description ],
254                    ...
255                ]
256                [ text menu item description ],
257                ...
258             ] ],
259             ...
260          ]);
261
262       Separator items do not hold any fields, except name.  Their purpose is
263       to hint a logical division of menu items by the system, which
264       visualizes them usually as non-selectable horizontal lines.
265
266       In menu bars, the first separator item met by parser is treated
267       differently. It serves as a hint, that the following items must be
268       shown in the right corner of a menu bar, contrary to the left-adjacent
269       default layout. Subsequent separator items in a menu bar declaration
270       can be either shown as a vertical division bars, or ignored.
271
272       With these menu items types and fields, it is possible to construct the
273       described above menu description arrays.  An item description array can
274       hold from 0 to 6 scalars, and each combination is treated differently.
275
276       six - [ NAME, TEXT/IMAGE, ACCEL, KEY, ACTION/SUBMENU, DATA ]
277           Six-scalar array is a fully qualified text-item description.  All
278           fields correspond to the described above scalars.
279
280       five [ NAME, TEXT/IMAGE, ACCEL, KEY, ACTION/SUBMENU ]
281           Same as six-scalar syntax, but without DATA field.  If DATA is
282           skipped it is "undef" by default.
283
284       four [ TEXT/IMAGE, ACCEL, KEY, ACTION/SUBMENU ] or [ NAME, TEXT/IMAGE,
285       ACTION/SUBMENU, DATA ]
286           One of two, depending whether last item is a hashref or not.
287
288           If not, same as five-scalar syntax, but without NAME field.  When
289           NAME is skipped it is assigned to an unique string within menu
290           object.
291
292           Otherwise same as three-scalar plus DATA hashref.
293
294       three [ NAME, TEXT/IMAGE, ACTION/SUBMENU ] or [ TEXT/IMAGE,
295       ACTION/SUBMENU, DATA ]
296           One of two, depending whether last item is a hashref or not.
297
298           In not, same as five-scalar syntax, but without ACCEL and KEY
299           fields.  KEY is "kb::NoKey" by default, so no keyboard combination
300           is bound to the item. Default ACCEL value is an empty string.
301
302           Otherwise same as two-scalar plus DATA hashref.
303
304       two [ TEXT/IMAGE, ACTION/SUBMENU ] or [ NAME, DATA ]
305           One of two, depending whether last item is a hashref or not.
306
307           If not, same as three-scalar syntax, but without NAME field.
308
309           Otherwise name with data reference. Useful for custom menu items
310           that need at least the '?' flag in the NAME.
311
312       one and zero [ ]
313           Both empty and 1-scalar arrays indicate a separator menu item. In
314           case of 1-scalar syntax, the scalar value is ignored.
315
316       As an example of all above said, a real-life piece of code is
317       exemplified:
318
319          $img = Prima::Image-> create( ... );
320          ...
321          $menu-> items( [
322             [ "~File" => [
323                 [ "Anonymous" => "Ctrl+D" => '^d' => sub { print "sub\n";}],   # anonymous sub
324                 [ $img => sub {
325                    my $img = $_[0]-> menu-> image( $_[1]);
326                    my @r = @{$img-> palette};
327                    $img-> palette( [reverse @r]);
328                    $_[0]->menu->image( $_[1], $img);
329                 }],                         # image
330                 [],                         # division line
331                 [ "E~xit" => "Exit"    ]    # calling named function of menu owner
332             ]],
333             [ ef => "~Edit" => [                  # example of system commands usage
334                ...
335                [ "Pa~ste" => sub { $_[0]->foc_action('paste')} ],
336                ...
337                ["~Duplicate menu"=>sub{ TestWindow->create( menu=>$_[0]->menu)}],
338             ]],
339             ...
340             [],                             # divisor in main menu opens
341             [ "~Clusters" => [              # right-adjacent part
342               [ "*".checker =>  "Checking Item"   => "Check"     ],
343               [],
344               [ "-".slave   =>  "Disabled state"   => "PrintText"],
345               ...
346             ]]
347          ] );
348
349       The code is stripped from 'menu.pl' from 'examples' directory in the
350       toolkit installation. The reader is advised to run the example and
351       learn the menu mechanics.
352
353   Prima::MenuItem
354       As described above, text and sub-menu items can be managed by elemental
355       properties - "::accel", "::text", "::image", "::checked", "::enabled",
356       "::action", "::data".  All these, plus some other methods can be called
357       in an alternative way, resembling name-based component calls of
358       Prima::Object. A code
359
360         $menu-> checked('CheckerMenuItem', 1);
361
362       can be re-written as
363
364         $menu-> CheckerMenuItem-> checked(1);
365
366       Name-based call substitutes Prima::MenuItem object, created on the fly.
367       Prima::MenuItem class shares same functions of Prima::AbstractMenu,
368       that handle individual menu items.
369
370   Prima::Menu
371       Objects, derived from Prima::Menu class are used to tandem
372       Prima::Window objects, and their items to be shown as menu bar on top
373       of the window.
374
375       Prima::Menu is special in that its top-level items visualized
376       horizontally, and in behavior of the top-level separator items ( see
377       above, "Menu items" ).
378
379       If "::selected" is set to 1, then a menu object is visualized in a
380       window, otherwise it is not.  This behavior allows window to host
381       multiple menu objects without clashing.  When a Prima::Menu object gets
382       'selected', it displaces the previous 'selected' menu Prima::Menu
383       object, and its items are installed into the visible menu bar.
384       Prima::Window property "::menu" then points to the menu object, and
385       "::menuItems" is an alias for "::items" menu class property.
386       Prima::Window's properties "::menuFont" and "::menuColorIndex" are used
387       as visualization hints.
388
389       Prima::Menu provides no new methods or properties.
390
391   Prima::Popup
392       Objects, derived from Prima::Popup class are used together with
393       Prima::Widget objects.  Menu items are visualized when the user pressed
394       the pop-up key or mouse buttons combination, in response to
395       Prima::Widget's "Popup" notification.
396
397       If "::selected" is set to 1, then a menu object is visualized in the
398       system pop-up menu, otherwise it is not.  This behavior allows widget
399       to host multiple menu objects without clashing.  When a Prima::Popup
400       object gets 'selected', it displaces the previous 'selected' menu
401       Prima::Popup object.  Prima::Widget property "::popup" then points to
402       the menu object, and "::popupItems" is an alias for "::items" menu
403       class property.  Prima::Widget's properties "::popupFont" and
404       "::popupColorIndex" are used as visualization hints.
405
406       A Prima::Popup object can be visualized explicitly, by means of "popup"
407       method. The implicit visualization by the user is happened only if the
408       "::autoPopup" property is set to 1.
409
410       Prima::Popup provides new "popup" method and new "::autoPopup"
411       property.
412
413   Prima::AccelTable
414       This class is destined for a more limited functionality than
415       Prima::Menu and Prima::Popup, primarily for mapping key strokes to
416       predefined actions.  Prima::AccelTable objects are never visualized,
417       and consume no system resources, although full menu item management
418       syntax is supported.
419
420       If "::selected" is set to 1, then it displaces the previous 'selected'
421       menu Prima::AccelTable object.  Prima::Widget property "::accelTable"
422       then points to the menu object, and "::accelItems" is an alias for
423       "::items" menu class property.
424
425       Prima::AccelTable provide no new methods or properties.
426

API

428   Properties
429       accel NAME, STRING / Prima::MenuItem::accel STRING
430           Manages accelerator text for a menu item.  NAME is name of the menu
431           item.
432
433       action NAME, SCALAR / Prima::MenuItem::action SCALAR.
434           Manages action for a menu item.  NAME is name of the menu item.
435           SCALAR can be either an anonymous sub or a method name, defined in
436           the menu object owner's name space.  Both called with three
437           parameters - the owner of a menu object, the menu object itself and
438           the name of the menu item.
439
440       autoPopup BOOLEAN
441           Only in Prima::Popup
442
443           If set to 1 in selected state, calls "popup()" action in response
444           to "Popup" notification, when the user presses the default key or
445           mouse button combination.
446
447           If 0, the pop-up menu can not be executed implicitly.
448
449           Default value: 1
450
451       autoToggle NAME, SCALAR / Prima::MenuItem::autoToggle SCALAR.
452           Manages autoToggle flag for a menu item. When set, "checked" option
453           is flipped when user selects the item. Also, un the unchecked state
454           the system displays an empty check box icon where normally a check
455           icon would appear, to hint the user that an item is a toggle,
456           despite being unchecked.
457
458       checked NAME, BOOLEAN / Prima::MenuItem::checked BOOLEAN
459           Manages 'checked' state of a menu item. If 'checked', a menu item
460           visualized with a distinct check-mark near the menu item text or
461           image. Its usage with sub-menu items is possible, although
462           discouraged.
463
464           NAME is name of the menu item.
465
466       data NAME, SCALAR / Prima::MenuItem::data SCALAR
467           Manages the user data scalar.
468
469           NAME is name of the menu item.  SCALAR can be any scalar value, the
470           toolkit does not use this property internally.
471
472       enabled NAME, BOOLEAN / Prima::MenuItem::enabled BOOLEAN
473           Manages 'enabled' state of a menu item. If 'enabled' is set, a menu
474           item visualized with grayed or otherwise dimmed color palette. If a
475           sub-menu item is disabled, whole sub-menu is inaccessible.
476
477           Default: true
478
479           NAME is name of the menu item.
480
481       group NAME, INTEGER / Prima::MenuItem::group INTEGER
482           If not 0, treated as a member of radio group with that number when
483           checked.  I.e. if one of the group is checked, others are
484           unchecked.
485
486       image NAME, OBJECT / Prima::MenuItem::image OBJECT
487           Manages the image, bound with a menu item. OBJECT is a non-null
488           Prima::Image object reference, with no particular color space or
489           dimensions ( because of dimensions, its usage in top-level
490           Prima::Menu items is discouraged ).
491
492           "::image" and "::text" are mutually exclusive menu item properties,
493           and can not be set together, but a menu item can change between
494           image and text representation at run time by calling these
495           properties.
496
497           NAME is name of the menu item.
498
499       items SCALAR
500           Manages the whole menu items tree. SCALAR is a multi-level
501           anonymous array structure, with syntax described in "Menu items".
502
503           "::items" is an ultimate tool for reading and writing the menu
504           items tree, but often it is too powerful, so there are elemental
505           properties "::accel", "::text", "::image", "::checked",
506           "::enabled", "::action", "::data" declared, that handle menu items
507           individually.
508
509       key NAME, KEY / Prima::MenuItem::key KEY
510           Manages the hot key combination, bound with a menu item.
511           Internally KEY is kept as an integer value, and get-mode call
512           returns integers only, but set-mode accepts the literal key format
513           - like, '^C', 'F5' strings.
514
515           NAME is name of the menu item, KEY is an integer value.
516
517       selected BOOLEAN
518           If set to 1, menu object is granted extra functionality from a
519           window or widget owner object. Different Prima::AbstractMenu
520           descendant provided with different extra functionalities.  In Usage
521           section, see Prima::Menu, Prima::Popup and Prima::AccelTable.
522
523           Within each menu class, only one menu object can be selected for
524           its owner.
525
526           If set to 0, the only actions performed are implicit hot-key lookup
527           when on "KeyDown" event.
528
529           Default value: 1
530
531       submenu NAME, ARRAY / Prima::MenuItem::submeny ARRAY
532           Manages submenu, if present on the item. On reading, is equivalent
533           to "get_items(NAME, 1)". On writing, removes all items under NAME
534           and inserts new ones.
535
536           See also: is_submenu.
537
538       text NAME, STRING / Prima::MenuItem::text STRING
539           Manages the text, bound with a menu item. STRING is an arbitrary
540           string, with '~' ( tilde ) quotation of a hot key character. The
541           hot key character is only used when keyboard navigation of a pop-up
542           or a pull-down menu is performed; it has no influence outside menu
543           sessions.
544
545           "::text" and "::image" are mutually exclusive menu item properties,
546           and can not be set together, but a menu item can change between
547           image and text representation at run time by calling these
548           properties.
549
550   Methods
551       check NAME / Prima::MenuItem::check
552           Alias for checked(1).  Sets menu item in checked state.
553
554       disable NAME / Prima::MenuItem::disable
555           Alias for enabled(0).  Sets menu item in disabled state.
556
557       enabled NAME / Prima::MenuItem::enabled
558           Alias for enabled(1).  Sets menu item in enabled state.
559
560       execute NAME
561           Calls the action associated with the menu item
562
563       find_item_by_key KEY
564           Finds items by the associated hot key combination
565
566       get_handle
567           Returns a system-dependent menu handle.
568
569           NB: Prima::AccelTable use no system resources, and this method
570           returns its object handle instead.
571
572       get_children NAME
573           Returns list of NAME's children
574
575       get_item NAME, FULL_TREE = 0
576           Returns items entry corresponding to NAME, with or without eventual
577           full tree of children items, depending on FULL_TREE flag.
578
579       get_item NAMES, FULL_TREE = 0
580           Returns immediate children items entries that have NAME as a
581           parent, with or without eventual full tree of children items,
582           depending on FULL_TREE flag.
583
584       has_item NAME
585           Returns boolean value, whether the menu object has a menu item with
586           name NAME.
587
588       insert ITEMS, ROOT_NAME, INDEX
589           Inserts menu item inside existing item tree.  ITEMS has same syntax
590           as "::items".  ROOT_NAME is the name of a menu item, where the
591           insertion must take place; if ROOT_NAME is an empty string, the
592           insertion is performed to the top level items.  INDEX is an offset,
593           which the newly inserted items would possess after the insertion.
594           INDEX 0 indicates the beginning, thus.
595
596           Returns no value.
597
598       is_separator NAME
599           Returns true if the item is a separator, false otherwise
600
601       is_submenu NAME
602           Returns true if the item has submenu, false otherwise
603
604       popup X_OFFSET, Y_OFFSET, [ LEFT = 0, BOTTOM = 0, RIGHT = 0, TOP = 0 ]
605           Only in Prima::Popup
606
607           Executes the system-driven pop-up menu, in location near
608           (X_OFFSET,Y_OFFSET) pixel on the screen, with items from "::items"
609           tree. The pop-up menu is hinted to be positioned so that the
610           rectangle, defined by (LEFT,BOTTOM) - (RIGHT,TOP) coordinates is
611           not covered by the first-level menu. This is useful when a pop-up
612           menu is triggered by a button widget, for example.
613
614           If during the execution the user selects a menu item, then its
615           associated action is executed ( see "action" ).
616
617           The method returns immediately and returns no value.
618
619       remove NAME / Prima::MenuItem::remove
620           Deletes a menu item from the items tree, and its sub-menus if the
621           item is a sub-menu item.
622
623       select
624           Alias for selected(1).  Sets menu object in selected state.
625
626       set_variable NAME, NEW_NAME
627           Changes the name of a menu item with NAME to NEW_NAME.  NEW_NAME
628           must not be an empty string and must not be in a '#integer' form.
629
630       toggle NAME / Prima::MenuItem::toggle
631           Toggles the checked state of a menu item and returns the new state.
632
633       translate_accel TEXT
634           Locates a '~' ( tilde ) - escaped character in a TEXT string and
635           returns its index ( as ord(lc())), or 0 if no escaped characters
636           were found.
637
638           The method can be called with no object.
639
640       translate_key CODE, KEY, MOD
641           Translates three-integer key representation into the one-integer
642           format and returns the integer value.  The three-integer format is
643           used in "KeyDown" and "KeyUp" notifications for Prima::Widget.
644
645           See Prima::Widget
646
647           The method can be called with no object.
648
649       translate_shortcut KEY
650           Converts literal-represented KEY string into the integer format and
651           returns the integer value.
652
653           The method can be called with no object.
654
655       uncheck NAME / Prima::MenuItem::uncheck
656           Alias for checked(0).  Sets menu item in unchecked state.
657
658   Events
659       Change ACTION [, NAME [, VALUE ]]
660           Triggered when structure of the menu tree is changed. ACTION is the
661           method call that triggered that action, and NAME is the menu item
662           namem, when applicable. If empty string, means root. VALUE is the
663           new value, if applicable.
664
665       ItemMeasure ITEMID, REF
666           Called when system needs to query dimensions of a menu item that
667           has custom painting bit set. "REF" is a 2-item arrayref that needs
668           to be set with pixel dimension.
669
670           See also: Options
671
672       ItemPaint CANVAS, ITEMID, SELECTED, X1, Y1, X2, Y2
673           Called whenever system needs to draw a menu item that has custom
674           painting bit set. X1 - Y2 are coordinates of the rectangle where
675           the drawing is allowed.
676
677           See also: Options
678

BUGS

680       Menu colors and fonts don't work on Windows and probably never will.
681

AUTHOR

683       Dmitry Karasik, <dmitry@karasik.eu.org>.
684

SEE ALSO

686       Prima, Prima::Object, Prima::Widget, Prima::Window
687
688
689
690perl v5.36.0                      2022-07-22               pod::Prima::Menu(3)
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