+----Fl_Choice, Fl_Menu_Bar, Fl_Menu_Button
All widgets that have a menu in FLTK are subclassed off of this class.
Currently FLTK provides you with
Fl_Menu_Bar, and Fl_Choice
The class contains a pointer to an array of structures of type Fl_Menu_Item. The
array may either be supplied directly by the user program, or it may
be "private": a dynamically allocated array managed by the Fl_Menu_.
Creates a new Fl_Menu_ widget using the given position, size,
and label string. menu() is initialized to null.
If the menu array is private the memory it uses is freed.
Returns a pointer to the array of Fl_Menu_Items. This will either be
the value passed to menu(value) or the private copy.
void Fl_Menu_::menu(const Fl_Menu_Item*)
Set the menu array pointer directly. If the old menu is private it is
deleted. NULL is allowed and acts the same as a zero-length
menu. If you try to modify the array (with add(), replace(), or
delete()) a private copy is automatically done.
The menu is set to a private copy of the passed Fl_Menu_Item array.
This is useful if you want to modify the flags of the menu items.
Same as menu(NULL), set the array pointer to null, indicating
a zero-length menu.
This returns the number of Fl_Menu_Item structures that make up the
menu, correctly counting submenus. This includes the "terminator"
item at the end. To copy a menu array you need to copy
size()*sizeof(Fl_Menu_Item) bytes. If the menu is
NULL this returns zero (an empty menu will return 1).
Adds a new menu item, with a title string, shortcut
string, callback, argument to the callback, and flags. If
the menu array was directly set with menu(x) then copy() is done to
make a private array.
Text is a string of the form "foo/bar/baz", this example
will result in a submenu called "foo" and one in that called
"bar" and and entry called "baz". The text is
copied to new memory and can be freed. The other arguments (including
the shortcut) are copied into the menu item unchanged.
If an item exists already with that name then it is replaced with
this new one. Otherwise this new one is added to the end of the
correct menu or submenu. The return value is the offset into the array
that the new entry was placed at.
The return value is the index into the array that the entry was put.
int Fl_Menu_::add(const char *)
The passed string is split at any '|' characters and then
add(s,0,0,0,0) is done with each section. This is often useful
if you are just using the value, and is compatable with Forms
and other GL programs.
Changes the text of item n. This is the only way to get
slash into an add()'ed menu item. If the menu array was directly set
with menu(x) then copy() is done to make a private array.
Deletes item n from the menu. If the menu array was directly
set with menu(x) then copy() is done to make a private array.
Changes the shortcut of item i to n.
Changes the flags of item i. For a list of the flags, see Fl_Menu_Item.
The value is the index into menu() of the last item chosen by
the user. It is zero initially. You can set it as an integer, or set
it with a pointer to a menu item. The set routines return non-zero if
the new value is different than the old one.
Only call this in response to FL_SHORTCUT events. If the
event matches an entry in the menu that entry is selected and the
callback will be done (or changed() will be set). This allows
shortcuts directed at one window to call menus in another.
Make the shortcuts for this menu work no matter what window has the
focus when you type it. This is done by using
Fl::add_handler(). This Fl_Menu_ widget does not
have to be visible (ie the window it is in can be hidden, or it does
not have to be put in a window at all).
Currently there can be only one global()menu. Setting a new
one will replace the old one. There is no way to remove the
global() setting (so don't destroy the widget!)
Returns the title of the last item chosen, or of item i.
Get or set the current color of menu item labels.
Get or set the current font of menu item labels.
Get or set the font size of menu item labels.
This box type is used to surround the currently-selected items in the
menus. If this is FL_NO_BOX then it acts like
FL_THIN_UP_BOX and selection_color() acts like
FL_WHITE, for back compatability.