1menu(n) Tk Built-In Commands menu(n)
2______________________________________________________________________________
6
8 menu, tk_menuSetFocus - Create and manipulate menu widgets
9
11 menu pathName ?options?
12 tk_menuSetFocus pathName
13
15 -activebackground -borderwidth -foreground
16 -activeborderwidth -cursor -relief
17 -activeforeground -disabledforeground -takefocus
18 -background -font
19 See the options manual entry for details on the standard options.
22
24 [-postcommand postCommand] If this option is specified then it provides │
25 a Tcl command to execute each time the menu is posted. The command is │
26 invoked by the post widget command before posting the menu. Note that │
27 in Tk 8.0 on Macintosh and Windows, all post-commands in a system of │
28 menus are executed before any of those menus are posted. This is due │
29 to the limitations in the individual platforms' menu managers.
30 [-selectcolor selectColor] For menu entries that are check buttons or
31 radio buttons, this option specifies the color to display in the indi‐
32 cator when the check button or radio button is selected.
33 [-tearoff tearOff] This option must have a proper boolean value, which
34 specifies whether or not the menu should include a tear-off entry at
35 the top. If so, it will exist as entry 0 of the menu and the other
36 entries will number starting at 1. The default menu bindings arrange
37 for the menu to be torn off when the tear-off entry is invoked.
38 [-tearoffcommand tearOffCommand] If this option has a non-empty value,
39 then it specifies a Tcl command to invoke whenever the menu is torn
40 off. The actual command will consist of the value of this option, fol‐
41 lowed by a space, followed by the name of the menu window, followed by
42 a space, followed by the name of the name of the torn off menu window.
43 For example, if the option's is ``a b'' and menu .x.y is torn off to
44 create a new menu .x.tearoff1, then the command ``a b .x.y
45 .x.tearoff1'' will be invoked. [-title title] The string will be used │
46 to title the window created when this menu is torn off. If the title is │
47 NULL, then the window will have the title of the menubutton or the text │
48 of the cascade item from which this menu was invoked. [-type type] │
49 This option can be one of menubar, tearoff, or normal, and is set when │
50 the menu is created. While the string returned by the configuration │
51 database will change if this option is changed, this does not affect │
52 the menu widget's behavior. This is used by the cloning mechanism and │
53 is not normally set outside of the Tk library.
54_________________________________________________________________
55
58 The menu command creates a new top-level window (given by the pathName
59 argument) and makes it into a menu widget. Additional options,
60 described above, may be specified on the command line or in the option
61 database to configure aspects of the menu such as its colors and font.
62 The menu command returns its pathName argument. At the time this com‐
63 mand is invoked, there must not exist a window named pathName, but
64 pathName's parent must exist.
65 A menu is a widget that displays a collection of one-line entries │
67 arranged in one or more columns. There exist several different types │
68 of entries, each with different properties. Entries of different types │
69 may be combined in a single menu. Menu entries are not the same as │
70 entry widgets. In fact, menu entries are not even distinct widgets; │
71 the entire menu is one widget.
72 Menu entries are displayed with up to three separate fields. The main
74 field is a label in the form of a text string, a bitmap, or an image,
75 controlled by the -label, -bitmap, and -image options for the entry.
76 If the -accelerator option is specified for an entry then a second
77 textual field is displayed to the right of the label. The accelerator
78 typically describes a keystroke sequence that may be typed in the
79 application to cause the same result as invoking the menu entry. The
80 third field is an indicator. The indicator is present only for check‐
81 button or radiobutton entries. It indicates whether the entry is
82 selected or not, and is displayed to the left of the entry's string.
83 In normal use, an entry becomes active (displays itself differently)
85 whenever the mouse pointer is over the entry. If a mouse button is
86 released over the entry then the entry is invoked. The effect of invo‐
87 cation is different for each type of entry; these effects are described
88 below in the sections on individual entries.
89 Entries may be disabled, which causes their labels and accelerators to
91 be displayed with dimmer colors. The default menu bindings will not
92 allow a disabled entry to be activated or invoked. Disabled entries
93 may be re-enabled, at which point it becomes possible to activate and
94 invoke them again. │
95 Whenever a menu's active entry is changed, a <<MenuSelect>> virtual │
97 event is send to the menu. The active item can then be queried from the │
98 menu, and an action can be taken, such as setting context-sensitive │
99 help text for the entry.
100
103 The most common kind of menu entry is a command entry, which behaves
104 much like a button widget. When a command entry is invoked, a Tcl com‐
105 mand is executed. The Tcl command is specified with the -command
106 option.
107
110 A separator is an entry that is displayed as a horizontal dividing
111 line. A separator may not be activated or invoked, and it has no
112 behavior other than its display appearance.
113
116 A checkbutton menu entry behaves much like a checkbutton widget. When
117 it is invoked it toggles back and forth between the selected and dese‐
118 lected states. When the entry is selected, a particular value is
119 stored in a particular global variable (as determined by the -onvalue
120 and -variable options for the entry); when the entry is deselected
121 another value (determined by the -offvalue option) is stored in the
122 global variable. An indicator box is displayed to the left of the
123 label in a checkbutton entry. If the entry is selected then the indi‐
124 cator's center is displayed in the color given by the -selectcolor
125 option for the entry; otherwise the indicator's center is displayed in
126 the background color for the menu. If a -command option is specified
127 for a checkbutton entry, then its value is evaluated as a Tcl command
128 each time the entry is invoked; this happens after toggling the
129 entry's selected state.
130
133 A radiobutton menu entry behaves much like a radiobutton widget.
134 Radiobutton entries are organized in groups of which only one entry may
135 be selected at a time. Whenever a particular entry becomes selected it
136 stores a particular value into a particular global variable (as deter‐
137 mined by the -value and -variable options for the entry). This action
138 causes any previously-selected entry in the same group to deselect
139 itself. Once an entry has become selected, any change to the entry's
140 associated variable will cause the entry to deselect itself. Grouping
141 of radiobutton entries is determined by their associated variables: if
142 two entries have the same associated variable then they are in the same
143 group. An indicator diamond is displayed to the left of the label in
144 each radiobutton entry. If the entry is selected then the indicator's
145 center is displayed in the color given by the -selectcolor option for
146 the entry; otherwise the indicator's center is displayed in the back‐
147 ground color for the menu. If a -command option is specified for a
148 radiobutton entry, then its value is evaluated as a Tcl command each
149 time the entry is invoked; this happens after selecting the entry.
150
153 A cascade entry is one with an associated menu (determined by the -menu
154 option). Cascade entries allow the construction of cascading menus.
155 The postcascade widget command can be used to post and unpost the asso‐
156 ciated menu just next to of the cascade entry. The associated menu
157 must be a child of the menu containing the cascade entry (this is
158 needed in order for menu traversal to work correctly).
159 A cascade entry posts its associated menu by invoking a Tcl command of
161 the form
162 menu post x y
163 where menu is the path name of the associated menu, and x and y are the
164 root-window coordinates of the upper-right corner of the cascade entry. │
165 On Unix, the lower-level menu is unposted by executing a Tcl command │
166 with the form │
167 menu unpost │
168 where menu is the name of the associated menu. On other platforms, the │
169 platform's native code takes care of unposting the menu.
170 If a -command option is specified for a cascade entry then it is evalu‐ │
172 ated as a Tcl command whenever the entry is invoked. This is not sup‐ │
173 ported on Windows.
174
177 A tear-off entry appears at the top of the menu if enabled with the
178 tearOff option. It is not like other menu entries in that it cannot be
179 created with the add widget command and cannot be deleted with the
180 delete widget command. When a tear-off entry is created it appears as
181 a dashed line at the top of the menu. Under the default bindings,
182 invoking the tear-off entry causes a torn-off copy to be made of the
183 menu and all of its submenus.
184
187 Any menu can be set as a menubar for a toplevel window (see toplevel │
188 command for syntax). On the Macintosh, whenever the toplevel is in │
189 front, this menu's cascade items will appear in the menubar across the │
190 top of the main monitor. On Windows and Unix, this menu's items will be │
191 displayed in a menubar across the top of the window. These menus will │
192 behave according to the interface guidelines of their platforms. For │
193 every menu set as a menubar, a clone menu is made. See the CLONES sec‐ │
194 tion for more information. │
195 As noted, menubars may behave differently on different platforms. One │
197 example of this concerns the handling of checkbuttons and radiobuttons │
198 within the menu. While it is permitted to put these menu elements on │
199 menubars, they may not be drawn with indicators on some platforms, due │
200 to system restrictions.
201
204 Certain menus in a menubar will be treated specially. On the Macin‐ │
205 tosh, access to the special Apple and Help menus is provided. On Win‐ │
206 dows, access to the Windows System menu in each window is provided. On │
207 X Windows, a special right-justified help menu is provided. In all │
208 cases, these menus must be created with the command name of the menubar │
209 menu concatenated with the special name. So for a menubar named │
210 .menubar, on the Macintosh, the special menus would be .menubar.apple │
211 and .menubar.help; on Windows, the special menu would be .menubar.sys‐ │
212 tem; on X Windows, the help menu would be .menubar.help. │
213 When Tk sees an Apple menu on the Macintosh, that menu's contents make │
215 up the first items of the Apple menu on the screen whenever the window │
216 containing the menubar is in front. The menu is the first one that the │
217 user sees and has a title which is an Apple logo. After all of the Tk- │
218 defined items, the menu will have a separator, followed by all of the │
219 items in the user's Apple Menu Items folder. Since the System uses a │
220 different menu definition procedure for the Apple menu than Tk uses for │
221 its menus, and the system APIs do not fully support everything Tk tries │
222 to do, the menu item will only have its text displayed. No font │
223 attributes, images, bitmaps, or colors will be displayed. In addition, │
224 a menu with a tearoff item will have the tearoff item displayed as │
225 "(TearOff)". │
226 When Tk see a Help menu on the Macintosh, the menu's contents are │
228 appended to the standard help menu on the right of the user's menubar │
229 whenever the user's menubar is in front. The first items in the menu │
230 are provided by Apple. Similar to the Apple Menu, customization in this │
231 menu is limited to what the system provides. │
232 When Tk sees a System menu on Windows, its items are appended to the │
234 system menu that the menubar is attached to. This menu has an icon rep‐ │
235 resenting a spacebar, and can be invoked with the mouse or by typing │
236 Alt+Spacebar. Due to limitations in the Windows API, any font changes, │
237 colors, images, bitmaps, or tearoff images will not appear in the sys‐ │
238 tem menu. │
239 When Tk see a Help menu on X Windows, the menu is moved to be last in │
241 the menubar and is right justified.
242
245 When a menu is set as a menubar for a toplevel window, or when a menu │
246 is torn off, a clone of the menu is made. This clone is a menu widget │
247 in its own right, but it is a child of the original. Changes in the │
248 configuration of the original are reflected in the clone. Additionally, │
249 any cascades that are pointed to are also cloned so that menu traversal │
250 will work right. Clones are destroyed when either the tearoff or │
251 menubar goes away, or when the original menu is destroyed.
252
255 The menu command creates a new Tcl command whose name is pathName.
256 This command may be used to invoke various operations on the widget.
257 It has the following general form:
258 pathName option ?arg arg ...?
259 Option and the args determine the exact behavior of the command.
260 Many of the widget commands for a menu take as one argument an indica‐
262 tor of which entry of the menu to operate on. These indicators are
263 called indexes and may be specified in any of the following forms:
264 number Specifies the entry numerically, where 0 corresponds to the
266 top-most entry of the menu, 1 to the entry below it, and so
267 on.
268 active Indicates the entry that is currently active. If no entry
270 is active then this form is equivalent to none. This form
271 may not be abbreviated.
272 end Indicates the bottommost entry in the menu. If there are
274 no entries in the menu then this form is equivalent to
275 none. This form may not be abbreviated.
276 last Same as end.
278 none Indicates ``no entry at all''; this is used most commonly
280 with the activate option to deactivate all the entries in
281 the menu. In most cases the specification of none causes
282 nothing to happen in the widget command. This form may not
283 be abbreviated.
284 @number In this form, number is treated as a y-coordinate in the
286 menu's window; the entry closest to that y-coordinate is
287 used. For example, ``@0'' indicates the top-most entry in
288 the window.
289 pattern If the index doesn't satisfy one of the above forms then
291 this form is used. Pattern is pattern-matched against the
292 label of each entry in the menu, in order from the top
293 down, until a matching entry is found. The rules of
294 Tcl_StringMatch are used.
295 The following widget commands are possible for menu widgets:
297 pathName activate index
299 Change the state of the entry indicated by index to active and
300 redisplay it using its active colors. Any previously-active
301 entry is deactivated. If index is specified as none, or if the
302 specified entry is disabled, then the menu ends up with no
303 active entry. Returns an empty string.
304 pathName add type ?option value option value ...?
306 Add a new entry to the bottom of the menu. The new entry's type
307 is given by type and must be one of cascade, checkbutton, com‐
308 mand, radiobutton, or separator, or a unique abbreviation of one
309 of the above. If additional arguments are present, they specify
310 any of the following options:
311 -activebackground value
313 Specifies a background color to use for displaying this
314 entry when it is active. If this option is specified as
315 an empty string (the default), then the activeBackground
316 option for the overall menu is used. If the tk_strictMo‐
317 tif variable has been set to request strict Motif compli‐
318 ance, then this option is ignored and the -background
319 option is used in its place. This option is not avail‐
320 able for separator or tear-off entries.
321 -activeforeground value
323 Specifies a foreground color to use for displaying this
324 entry when it is active. If this option is specified as
325 an empty string (the default), then the activeForeground
326 option for the overall menu is used. This option is not
327 available for separator or tear-off entries.
328 -accelerator value
330 Specifies a string to display at the right side of the
331 menu entry. Normally describes an accelerator keystroke
332 sequence that may be typed to invoke the same function as
333 the menu entry. This option is not available for separa‐
334 tor or tear-off entries.
335 -background value
337 Specifies a background color to use for displaying this
338 entry when it is in the normal state (neither active nor
339 disabled). If this option is specified as an empty
340 string (the default), then the background option for the
341 overall menu is used. This option is not available for
342 separator or tear-off entries.
343 -bitmap value
345 Specifies a bitmap to display in the menu instead of a
346 textual label, in any of the forms accepted by Tk_Get‐
347 Bitmap. This option overrides the -label option (as con‐
348 trolled by the -compound option) but may be reset to an
349 empty string to enable a textual label to be displayed.
350 If a -image option has been specified, it overrides -bit‐
351 map. This option is not available for separator or tear-
352 off entries.
353 -columnbreak value
355 When this option is zero, the entry appears below the │
356 previous entry. When this option is one, the entry │
357 appears at the top of a new column in the menu.
358 -command value
360 Specifies a Tcl command to execute when the menu entry is
361 invoked. Not available for separator or tear-off
362 entries. │
363 -compound value │
365 Specifies whether the menu entry should display both an │
366 image and text, and if so, where the image should be │
367 placed relative to the text. Valid values for this │
368 option are bottom, center, left, none, right and top. │
369 The default value is none, meaning that the button will │
370 display either an image or text, depending on the values │
371 of the -image and -bitmap options.
372 -font value
374 Specifies the font to use when drawing the label or
375 accelerator string in this entry. If this option is
376 specified as an empty string (the default) then the font
377 option for the overall menu is used. This option is not
378 available for separator or tear-off entries.
379 -foreground value
381 Specifies a foreground color to use for displaying this
382 entry when it is in the normal state (neither active nor
383 disabled). If this option is specified as an empty
384 string (the default), then the foreground option for the
385 overall menu is used. This option is not available for
386 separator or tear-off entries. │
387 -hidemargin value │
389 Specifies whether the standard margins should be drawn │
390 for this menu entry. This is useful when creating palette │
391 with images in them, i.e., color palettes, pattern pal‐ │
392 ettes, etc. 1 indicates that the margin for the entry is │
393 hidden; 0 means that the margin is used.
394 -image value
396 Specifies an image to display in the menu instead of a
397 text string or bitmap. The image must have been created
398 by some previous invocation of image create. This option
399 overrides the -label and -bitmap options (as controlled
400 by the -compound option) but may be reset to an empty
401 string to enable a textual or bitmap label to be dis‐
402 played. This option is not available for separator or
403 tear-off entries.
404 -indicatoron value
406 Available only for checkbutton and radiobutton entries.
407 Value is a boolean that determines whether or not the
408 indicator should be displayed.
409 -label value
411 Specifies a string to display as an identifying label in
412 the menu entry. Not available for separator or tear-off
413 entries.
414 -menu value
416 Available only for cascade entries. Specifies the path
417 name of the submenu associated with this entry. The sub‐
418 menu must be a child of the menu.
419 -offvalue value
421 Available only for checkbutton entries. Specifies the
422 value to store in the entry's associated variable when
423 the entry is deselected.
424 -onvalue value
426 Available only for checkbutton entries. Specifies the
427 value to store in the entry's associated variable when
428 the entry is selected.
429 -selectcolor value
431 Available only for checkbutton and radiobutton entries.
432 Specifies the color to display in the indicator when the
433 entry is selected. If the value is an empty string (the
434 default) then the selectColor option for the menu deter‐
435 mines the indicator color.
436 -selectimage value
438 Available only for checkbutton and radiobutton entries.
439 Specifies an image to display in the entry (in place of
440 the -image option) when it is selected. Value is the
441 name of an image, which must have been created by some
442 previous invocation of image create. This option is
443 ignored unless the -image option has been specified.
444 -state value
446 Specifies one of three states for the entry: normal,
447 active, or disabled. In normal state the entry is dis‐
448 played using the foreground option for the menu and the
449 background option from the entry or the menu. The active
450 state is typically used when the pointer is over the
451 entry. In active state the entry is displayed using the
452 activeForeground option for the menu along with the
453 activebackground option from the entry. Disabled state
454 means that the entry should be insensitive: the default
455 bindings will refuse to activate or invoke the entry. In
456 this state the entry is displayed according to the dis‐
457 abledForeground option for the menu and the background
458 option from the entry. This option is not available for
459 separator entries.
460 -underline value
462 Specifies the integer index of a character to underline
463 in the entry. This option is also queried by the default
464 bindings and used to implement keyboard traversal. 0
465 corresponds to the first character of the text displayed
466 in the entry, 1 to the next character, and so on. If a
467 bitmap or image is displayed in the entry then this
468 option is ignored. This option is not available for sep‐
469 arator or tear-off entries.
470 -value value
472 Available only for radiobutton entries. Specifies the
473 value to store in the entry's associated variable when
474 the entry is selected. If an empty string is specified,
475 then the -label option for the entry as the value to
476 store in the variable.
477 -variable value
479 Available only for checkbutton and radiobutton entries.
480 Specifies the name of a global value to set when the
481 entry is selected. For checkbutton entries the variable
482 is also set when the entry is deselected. For radiobut‐
483 ton entries, changing the variable causes the currently-
484 selected entry to deselect itself.
485 The add widget command returns an empty string.
487 pathName cget option
489 Returns the current value of the configuration option given by
490 option. Option may have any of the values accepted by the menu
491 command. │
492 pathName clone newPathname ?cloneType? │
494 Makes a clone of the current menu named newPathName. This clone │
495 is a menu in its own right, but any changes to the clone are │
496 propogated to the original menu and vice versa. cloneType can be │
497 normal, menubar, or tearoff. Should not normally be called out‐ │
498 side of the Tk library. See the CLONES section for more informa‐ │
499 tion.
500 pathName configure ?option? ?value option value ...?
502 Query or modify the configuration options of the widget. If no
503 option is specified, returns a list describing all of the avail‐
504 able options for pathName (see Tk_ConfigureInfo for information
505 on the format of this list). If option is specified with no
506 value, then the command returns a list describing the one named
507 option (this list will be identical to the corresponding sublist
508 of the value returned if no option is specified). If one or
509 more option-value pairs are specified, then the command modifies
510 the given widget option(s) to have the given value(s); in this
511 case the command returns an empty string. Option may have any
512 of the values accepted by the menu command.
513 pathName delete index1 ?index2?
515 Delete all of the menu entries between index1 and index2 inclu‐
516 sive. If index2 is omitted then it defaults to index1.
517 Attempts to delete a tear-off menu entry are ignored (instead,
518 you should change the tearOff option to remove the tear-off
519 entry).
520 pathName entrycget index option
522 Returns the current value of a configuration option for the
523 entry given by index. Option may have any of the values
524 accepted by the add widget command.
525 pathName entryconfigure index ?options?
527 This command is similar to the configure command, except that it
528 applies to the options for an individual entry, whereas config‐
529 ure applies to the options for the menu as a whole. Options may
530 have any of the values accepted by the add widget command. If
531 options are specified, options are modified as indicated in the
532 command and the command returns an empty string. If no options
533 are specified, returns a list describing the current options for
534 entry index (see Tk_ConfigureInfo for information on the format
535 of this list).
536 pathName index index
538 Returns the numerical index corresponding to index, or none if
539 index was specified as none.
540 pathName insert index type ?option value option value ...?
542 Same as the add widget command except that it inserts the new
543 entry just before the entry given by index, instead of appending
544 to the end of the menu. The type, option, and value arguments
545 have the same interpretation as for the add widget command. It
546 is not possible to insert new menu entries before the tear-off
547 entry, if the menu has one.
548 pathName invoke index
550 Invoke the action of the menu entry. See the sections on the
551 individual entries above for details on what happens. If the
552 menu entry is disabled then nothing happens. If the entry has a
553 command associated with it then the result of that command is
554 returned as the result of the invoke widget command. Otherwise
555 the result is an empty string. Note: invoking a menu entry
556 does not automatically unpost the menu; the default bindings
557 normally take care of this before invoking the invoke widget
558 command.
559 pathName post x y
561 Arrange for the menu to be displayed on the screen at the root-
562 window coordinates given by x and y. These coordinates are
563 adjusted if necessary to guarantee that the entire menu is visi‐
564 ble on the screen. This command normally returns an empty
565 string. If the postCommand option has been specified, then its
566 value is executed as a Tcl script before posting the menu and
567 the result of that script is returned as the result of the post
568 widget command. If an error returns while executing the com‐
569 mand, then the error is returned without posting the menu.
570 pathName postcascade index
572 Posts the submenu associated with the cascade entry given by
573 index, and unposts any previously posted submenu. If index
574 doesn't correspond to a cascade entry, or if pathName isn't
575 posted, the command has no effect except to unpost any currently
576 posted submenu.
577 pathName type index
579 Returns the type of the menu entry given by index. This is the
580 type argument passed to the add widget command when the entry
581 was created, such as command or separator, or tearoff for a
582 tear-off entry.
583 pathName unpost
585 Unmap the window so that it is no longer displayed. If a lower- │
586 level cascaded menu is posted, unpost that menu. Returns an │
587 empty string. This subcommand does not work on Windows and the │
588 Macintosh, as those platforms have their own way of unposting │
589 menus.
590 pathName yposition index
592 Returns a decimal string giving the y-coordinate within the menu
593 window of the topmost pixel in the entry specified by index.
594
597 The default bindings support four different ways of using menus: │
598 Pulldown Menus in Menubar │
600 This is the most command case. You create a menu widget that │
601 will become the menu bar. You then add cascade entries to this │
602 menu, specifying the pull down menus you wish to use in your │
603 menu bar. You then create all of the pulldowns. Once you have │
604 done this, specify the menu using the -menu option of the │
605 toplevel's widget command. See the toplevel manual entry for │
606 details.
607 Pulldown Menus in Menu Buttons
609 This is the compatable way to do menu bars. You create one
610 menubutton widget for each top-level menu, and typically you
611 arrange a series of menubuttons in a row in a menubar window.
612 You also create the top-level menus and any cascaded submenus,
613 and tie them together with -menu options in menubuttons and cas‐
614 cade menu entries. The top-level menu must be a child of the
615 menubutton, and each submenu must be a child of the menu that
616 refers to it. Once you have done this, the default bindings
617 will allow users to traverse and invoke the tree of menus via
618 its menubutton; see the menubutton manual entry for details.
619 Popup Menus
621 Popup menus typically post in response to a mouse button press
622 or keystroke. You create the popup menus and any cascaded sub‐
623 menus, then you call the tk_popup procedure at the appropriate
624 time to post the top-level menu.
625 Option Menus
627 An option menu consists of a menubutton with an associated menu
628 that allows you to select one of several values. The current
629 value is displayed in the menubutton and is also stored in a
630 global variable. Use the tk_optionMenu procedure to create
631 option menubuttons and their menus.
632 Torn-off Menus
634 You create a torn-off menu by invoking the tear-off entry at the
635 top of an existing menu. The default bindings will create a new
636 menu that is a copy of the original menu and leave it perma‐
637 nently posted as a top-level window. The torn-off menu behaves
638 just the same as the original menu.
639
642 Tk automatically creates class bindings for menus that give them the
643 following default behavior:
644 [1] When the mouse enters a menu, the entry underneath the mouse
646 cursor activates; as the mouse moves around the menu, the
647 active entry changes to track the mouse.
648 [2] When the mouse leaves a menu all of the entries in the menu
650 deactivate, except in the special case where the mouse moves
651 from a menu to a cascaded submenu.
652 [3] When a button is released over a menu, the active entry (if any)
654 is invoked. The menu also unposts unless it is a torn-off menu.
655 [4] The Space and Return keys invoke the active entry and unpost the
657 menu.
658 [5] If any of the entries in a menu have letters underlined with the
660 -underline option, then pressing one of the underlined letters
661 (or its upper-case or lower-case equivalent) invokes that entry
662 and unposts the menu.
663 [6] The Escape key aborts a menu selection in progress without
665 invoking any entry. It also unposts the menu unless it is a
666 torn-off menu.
667 [7] The Up and Down keys activate the next higher or lower entry in
669 the menu. When one end of the menu is reached, the active entry
670 wraps around to the other end.
671 [8] The Left key moves to the next menu to the left. If the current
673 menu is a cascaded submenu, then the submenu is unposted and the
674 current menu entry becomes the cascade entry in the parent. If
675 the current menu is a top-level menu posted from a menubutton,
676 then the current menubutton is unposted and the next menubutton
677 to the left is posted. Otherwise the key has no effect. The
678 left-right order of menubuttons is determined by their stacking
679 order: Tk assumes that the lowest menubutton (which by default
680 is the first one created) is on the left.
681 [9] The Right key moves to the next menu to the right. If the cur‐
683 rent entry is a cascade entry, then the submenu is posted and
684 the current menu entry becomes the first entry in the submenu.
685 Otherwise, if the current menu was posted from a menubutton,
686 then the current menubutton is unposted and the next menubutton
687 to the right is posted.
688 Disabled menu entries are non-responsive: they don't activate and they
690 ignore mouse button presses and releases.
691 Several of the bindings make use of the command tk_menuSetFocus. It │
693 saves the current focus and sets the focus to its pathName argument, │
694 which is a menu widget.
695 The behavior of menus can be changed by defining new bindings for indi‐
697 vidual widgets or by redefining the class bindings.
698
701 At present it isn't possible to use the option database to specify val‐
702 ues for the options to individual entries.
703
706 menu, widget
707Tk 4.1 menu(n)