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-<HTML>
-<HEAD>
- <TITLE>Fl_Menu_Item</TITLE>
-</HEAD>
-<BODY>
-<!-- NEW PAGE -->
-<H2><A name=Fl_Menu_Item>struct Fl_Menu_Item</A></H2>
-<HR>
-<H3>Class Hierarchy</H3>
-<UL>
-<PRE>
-<B>struct Fl_Menu_Item</B>
-</PRE>
-</UL>
-<H3>Include Files</H3>
-<UL>
-<PRE>
-#include &lt;FL/Fl_Menu_Item.H&gt;
-</PRE>
-</UL>
-<H3>Description</H3>
-
-The <TT>Fl_Menu_Item</TT> structure defines a single menu item that
-is used by the <A href=Fl_Menu_.html#Fl_Menu_>Fl_Menu_</A> class. This
-structure is defined in <TT> &lt;FL/Fl_Menu_Item.H&gt;</TT>
-
-<UL>
-<PRE>
-struct Fl_Menu_Item {
- const char* text; // label()
- ulong shortcut_;
- Fl_Callback* callback_;
- void* user_data_;
- int flags;
- uchar labeltype_;
- uchar labelfont_;
- uchar labelsize_;
- uchar labelcolor_;
-};
-
-enum { // values for flags:
- FL_MENU_INACTIVE = 1,
- FL_MENU_TOGGLE = 2,
- FL_MENU_VALUE = 4,
- FL_MENU_RADIO = 8,
- FL_MENU_INVISIBLE = 0x10,
- FL_SUBMENU_POINTER = 0x20,
- FL_SUBMENU = 0x40,
- FL_MENU_DIVIDER = 0x80,
- FL_MENU_HORIZONTAL = 0x100
-};
-</PRE>
-</UL>
-Typically menu items are statically defined; for example:
-<UL><PRE>
-Fl_Menu_Item popup[] = {
- {&quot;&amp;alpha&quot;, FL_ALT+'a', the_cb, (void*)1},
- {&quot;&amp;beta&quot;, FL_ALT+'b', the_cb, (void*)2},
- {&quot;gamma&quot;, FL_ALT+'c', the_cb, (void*)3, FL_MENU_DIVIDER},
- {&quot;&amp;strange&quot;, 0, strange_cb},
- {&quot;&amp;charm&quot;, 0, charm_cb},
- {&quot;&amp;truth&quot;, 0, truth_cb},
- {&quot;b&amp;eauty&quot;, 0, beauty_cb},
- {&quot;sub&amp;menu&quot;, 0, 0, 0, FL_SUBMENU},
- {&quot;one&quot;},
- {&quot;two&quot;},
- {&quot;three&quot;},
- {0},
- {&quot;inactive&quot;, FL_ALT+'i', 0, 0, FL_MENU_INACTIVE|FL_MENU_DIVIDER},
- {&quot;invisible&quot;,FL_ALT+'i', 0, 0, FL_MENU_INVISIBLE},
- {&quot;check&quot;, FL_ALT+'i', 0, 0, FL_MENU_TOGGLE|FL_MENU_VALUE},
- {&quot;box&quot;, FL_ALT+'i', 0, 0, FL_MENU_TOGGLE},
-{0}};
-</PRE></UL>
-produces:
-<P ALIGN=CENTER><IMG src="menu.gif" ALT="Fl_Menu_Item widgets."></P>
-
-A submenu title is identified by the bit <TT>FL_SUBMENU</TT> in the <TT>
-flags</TT> field, and ends with a <TT>label()</TT> that is <TT>NULL</TT>.
-You can nest menus to any depth. A pointer to the first item in the
-submenu can be treated as an <TT>Fl_Menu</TT> array itself. It is also
-possible to make seperate submenu arrays with <TT>FL_SUBMENU_POINTER</TT>
-flags.
-<P>You should use the method functions to access structure members and
-not access them directly to avoid compatibility problems with future
-releases of FLTK. </P>
-<H3>Methods</H3>
-<CENTER>
-<TABLE width=90% summary="Fl_Menu_Item methods.">
-<TR><TD align=left valign=top>
-<UL>
-<LI><A href=#Fl_Menu_Item.label>label</A></LI>
-<LI><A href=#Fl_Menu_Item.labeltype>labeltype</A></LI>
-<LI><A href=#Fl_Menu_Item.labelcolor>labelcolor</A></LI>
-<LI><A href=#Fl_Menu_Item.labelfont>labelfont</A></LI>
-<LI><A href=#Fl_Menu_Item.labelsize>labelsize</A></LI>
-<LI><A href=#Fl_Menu_Item.callback>callback</A></LI>
-</UL>
-</TD><TD align=left valign=top>
-<UL>
-<LI><A href=#Fl_Menu_Item.user_data>user_data</A></LI>
-<LI><A href=#Fl_Menu_Item.argument>argument</A></LI>
-<LI><A href=#Fl_Menu_Item.do_callback>do_callback</A></LI>
-<LI><A href=#Fl_Menu_Item.shortcut>shortcut</A></LI>
-<LI><A href=#Fl_Menu_Item.submenu>submenu</A></LI>
-<LI><A href=#Fl_Menu_Item.checkbox>checkbox</A></LI>
-</UL>
-</TD><TD align=left valign=top>
-<UL>
-<LI><A href=#Fl_Menu_Item.radio>radio</A></LI>
-<LI><A href=#Fl_Menu_Item.value>value</A></LI>
-<LI><A href=#Fl_Menu_Item.set>set</A></LI>
-<LI><A href=#Fl_Menu_Item.setonly>setonly</A></LI>
-<LI><A href=#Fl_Menu_Item.clear>clear</A></LI>
-<LI><A href=#Fl_Menu_Item.visible>visible</A></LI>
-</UL>
-</TD><TD align=left valign=top>
-<UL>
-<LI><A href=#Fl_Menu_Item.show>show</A></LI>
-<LI><A href=#Fl_Menu_Item.hide>hide</A></LI>
-<LI><A href=#Fl_Menu_Item.active>active</A></LI>
-<LI><A href=#Fl_Menu_Item.activate>activate</A></LI>
-<LI><A href=#Fl_Menu_Item.deactivate>deactivate</A></LI>
-</UL>
-</TD><TD align=left valign=top>
-<UL>
-<LI><A href=#Fl_Menu_Item.popup>popup</A></LI>
-<LI><A href=#Fl_Menu_Item.pulldown>pulldown</A></LI>
-<LI><A href=#Fl_Menu_Item.test_shortcut>test_shortcut</A></LI>
-<LI><A href=#Fl_Menu_Item.size>size</A></LI>
-<LI><A href=#Fl_Menu_Item.next>next</A></LI>
-</UL>
-</TD></TR>
-</TABLE>
-</CENTER>
-<H4><A name=Fl_Menu_Item.label>const char* Fl_Menu_Item::label() const
-<BR> void Fl_Menu_Item::label(const char*)
-<BR> void Fl_Menu_Item::label(Fl_Labeltype, const char*)</A></H4>
- This is the title of the item. A <TT>NULL</TT> here indicates the end
-of the menu (or of a submenu). A '&amp;' in the item will print an
-underscore under the next letter, and if the menu is popped up that
-letter will be a &quot;shortcut&quot; to pick that item. To get a
-real '&amp;' put two
-in a row.
-<H4><A name=Fl_Menu_Item.labeltype>Fl_Labeltype
-Fl_Menu_Item::labeltype() const
-<BR> void Fl_Menu_Item::labeltype(Fl_Labeltype)</A></H4>
- A <TT>labeltype</TT> identifies a routine that draws the label of the
-widget. This can be used for special effects such as emboss, or to use
-the <TT>label()</TT> pointer as another form of data such as a bitmap.
- The value <TT>FL_NORMAL_LABEL</TT> prints the label as text.
-<H4><A name=Fl_Menu_Item.labelcolor>Fl_Color Fl_Menu_Item::labelcolor()
-const
-<BR> void Fl_Menu_Item::labelcolor(Fl_Color)</A></H4>
- This color is passed to the labeltype routine, and is typically the
-color of the label text. This defaults to <TT>FL_BLACK</TT>. If this
-color is not black fltk will <I>not</I> use overlay bitplanes to draw
-the menu - this is so that images put in the menu draw correctly.
-<H4><A name=Fl_Menu_Item.labelfont>Fl_Font Fl_Menu_Item::labelfont()
-const
-<BR> void Fl_Menu_Item::labelfont(Fl_Font)</A></H4>
- Fonts are identified by small 8-bit indexes into a table. See the <A href=enumerations.html#Enumerations>
-enumeration list</A> for predefined fonts. The default value is a
-Helvetica font. The function <A href="Fl.html#Fl.set_font"><TT>
-Fl::set_font()</TT></A> can define new fonts.
-<H4><A name=Fl_Menu_Item.labelsize>uchar Fl_Menu_Item::labelsize() const
-<BR> void Fl_Menu_Item::labelsize(uchar)</A></H4>
- Gets or sets the label font pixel size/height.
-<H4><A name=Fl_Menu_Item.callback>typedef void
-(Fl_Callback)(Fl_Widget*, void*)
-<BR> Fl_Callback* Fl_Menu_Item::callback() const
-<BR> void Fl_Menu_Item::callback(Fl_Callback*, void* = 0)
-<BR> void Fl_Menu_Item::callback(void (*)(Fl_Widget*))</A></H4>
- Each item has space for a callback function and an argument for that
-function. Due to back compatability, the <TT>Fl_Menu_Item</TT> itself
-is not passed to the callback, instead you have to get it by calling <TT>
-((Fl_Menu_*)w)-&gt;mvalue()</TT> where <TT>w</TT> is the widget argument.
-<H4><A name=Fl_Menu_Item.user_data>void* Fl_Menu_Item::user_data() const
-<BR> void Fl_Menu_Item::user_data(void*)</A></H4>
- Get or set the <TT>user_data</TT> argument that is sent to the
-callback function.
-<H4><A name=Fl_Menu_Item.argument>void Fl_Menu_Item::callback(void
-(*)(Fl_Widget*, long), long = 0)
-<BR> long Fl_Menu_Item::argument() const
-<BR> void Fl_Menu_Item::argument(long)</A></H4>
- For convenience you can also define the callback as taking a <TT>long</TT>
- argument. This is implemented by casting this to a <TT>Fl_Callback</TT>
- and casting the <TT>long</TT> to a <TT>void*</TT> and may not be
-portable to some machines.
-<H4><A name=Fl_Menu_Item.do_callback>void
-Fl_Menu_Item::do_callback(Fl_Widget*)
-<BR> void Fl_Menu_Item::do_callback(Fl_Widget*, void*)
-<BR> void Fl_Menu_Item::do_callback(Fl_Widget*, long)</A></H4>
- Call the <TT>Fl_Menu_Item</TT> item's callback, and provide the <TT>
-Fl_Widget</TT> argument (and optionally override the user_data()
-argument). You must first check that <TT>callback()</TT> is non-zero
-before calling this.
-<H4><A name=Fl_Menu_Item.shortcut>ulong Fl_Menu_Item::shortcut() const
-<BR> void Fl_Menu_Item::shortcut(ulong)</A></H4>
- Sets exactly what key combination will trigger the menu item. The
-value is a logical 'or' of a key and a set of shift flags, for instance <TT>
-FL_ALT+'a'</TT> or <TT>FL_ALT+FL_F+10</TT> or just 'a'. A value of
-zero disables the shortcut.
-<P>The key can be any value returned by <A href="Fl.html#Fl.event_key">
-<TT>Fl::event_key()</TT></A>, but will usually be an ASCII letter. Use
-a lower-case letter unless you require the shift key to be held down. </P>
-<P>The shift flags can be any set of values accepted by <A href="Fl.html#Fl.event_state">
-<TT>Fl::event_state()</TT></A>. If the bit is on that shift key must
-be pushed. Meta, Alt, Ctrl, and Shift must be off if they are not in
-the shift flags (zero for the other bits indicates a &quot;don't care&quot;
-setting). </P>
-<H4><A name=Fl_Menu_Item.submenu>int Fl_Menu_Item::submenu() const</A></H4>
- Returns true if either <TT>FL_SUBMENU</TT> or <TT>FL_SUBMENU_POINTER</TT>
- is on in the flags. <TT>FL_SUBMENU</TT> indicates an embedded submenu
-that goes from the next item through the next one with a <TT>NULL</TT>
-<TT>label()</TT>. <TT>FL_SUBMENU_POINTER</TT> indicates that <TT>user_data()</TT>
- is a pointer to another menu array.
-<H4><A name=Fl_Menu_Item.checkbox>int Fl_Menu_Item::checkbox() const</A></H4>
- Returns true if a checkbox will be drawn next to this item. This is
-true if <TT>FL_MENU_TOGGLE</TT> or <TT>FL_MENU_RADIO</TT> is set in the
-flags.
-<H4><A name=Fl_Menu_Item.radio>int Fl_Menu_Item::radio() const</A></H4>
- Returns true if this item is a radio item. When a radio button is
-selected all &quot;adjacent&quot; radio buttons are turned off. A set of radio
-items is delimited by an item that has <TT>radio()</TT> false, or by an
-item with <TT>FL_MENU_DIVIDER</TT> turned on.
-<H4><A name=Fl_Menu_Item.value>int Fl_Menu_Item::value() const</A></H4>
- Returns the current value of the check or radio item.
-<H4><A name=Fl_Menu_Item.set>void Fl_Menu_Item::set()</A></H4>
- Turns the check or radio item &quot;on&quot; for the menu item. Note that this
-does not turn off any adjacent radio items like <TT>set_only()</TT>
- does.
-<H4><A name=Fl_Menu_Item.setonly>void Fl_Menu_Item::setonly()</A></H4>
- Turns the radio item &quot;on&quot; for the menu item and turns off adjacent
-radio item.
-<H4><A name=Fl_Menu_Item.clear>void Fl_Menu_Item::clear()</A></H4>
- Turns the check or radio item &quot;off&quot; for the menu item.
-<H4><A name=Fl_Menu_Item.visible>int Fl_Menu_Item::visible() const</A></H4>
- Gets the visibility of an item.
-<H4><A name=Fl_Menu_Item.show>void Fl_Menu_Item::show()</A></H4>
- Makes an item visible in the menu.
-<H4><A name=Fl_Menu_Item.hide>void Fl_Menu_Item::hide()</A></H4>
- Hides an item in the menu.
-<H4><A name=Fl_Menu_Item.active>int Fl_Menu_Item::active() const</A></H4>
- Get whether or not the item can be picked.
-<H4><A name=Fl_Menu_Item.activate>void Fl_Menu_Item::activate()</A></H4>
- Allows a menu item to be picked.
-<H4><A name=Fl_Menu_Item.deactivate>void Fl_Menu_Item::deactivate()</A></H4>
- Prevents a menu item from being picked. Note that this will also cause
-the menu item to appear grayed-out.
-<H4><A name=Fl_Menu_Item.popup>const Fl_Menu_Item
-*Fl_Menu_Item::popup(int X, int Y, const char* title = 0, const
-Fl_Menu_Item* picked = 0, const Fl_Menu_* button = 0) const</A></H4>
- This method is called by widgets that want to display menus. The menu
-stays up until the user picks an item or dismisses it. The selected
-item (or <TT>NULL</TT> if none) is returned. <I>This does not do the
-callbacks or change the state of check or radio items.</I>
-<P><TT>X,Y</TT> is the position of the mouse cursor, relative to the
-window that got the most recent event (usually you can pass <TT>
-Fl::event_x()</TT> and <TT>Fl::event_y()</TT> unchanged here). </P>
-<P><TT>title</TT> is a character string title for the menu. If
-non-zero a small box appears above the menu with the title in it. </P>
-<P>The menu is positioned so the cursor is centered over the item <TT>
-picked</TT>. This will work even if <TT>picked</TT> is in a submenu.
-If <TT>picked</TT> is zero or not in the menu item table the menu is
-positioned with the cursor in the top-left corner. </P>
-<P><TT>button</TT> is a pointer to an <A href=Fl_Menu_.html#Fl_Menu_><TT>
-Fl_Menu_</TT></A> from which the color and boxtypes for the menu are
-pulled. If <TT>NULL</TT> then defaults are used. </P>
-<H4><A name=Fl_Menu_Item.pulldown>const Fl_Menu_Item
-*Fl_Menu_Item::pulldown(int X, int Y, int W, int H, const Fl_Menu_Item*
-picked = 0, const Fl_Menu_* button = 0, const Fl_Menu_Item* title = 0,
-int menubar=0) const</A></H4>
-<TT>pulldown()</TT> is similar to <TT>popup()</TT>, but a rectangle is
-provided to position the menu. The menu is made at least <TT>W</TT>
- wide, and the <TT>picked</TT> item is centered over the rectangle
-(like <TT>Fl_Choice</TT> uses). If <TT>picked</TT> is zero or not
-found, the menu is aligned just below the rectangle (like a pulldown
-menu).
-<P>The <TT>title</TT> and <TT>menubar</TT> arguments are used
-internally by the <TT>Fl_Menu_Bar</TT> widget. </P>
-<H4><A name=Fl_Menu_Item.test_shortcut>const Fl_Menu_Item*
-Fl_Menu_Item::test_shortcut() const</A></H4>
- This is designed to be called by a widgets <TT>handle()</TT> method in
-response to a <TT>FL_SHORTCUT</TT> event. If the current event matches
-one of the items shortcut, that item is returned. If the keystroke
-does not match any shortcuts then <TT>NULL</TT> is returned. This only
-matches the <TT>shortcut()</TT> fields, not the letters in the title
-preceeded by '
-<H4><A name=Fl_Menu_Item.size>int Fl_Menu_Item::size()</A></H4>
- Returns the number of Fl_Menu_Item structures that make up this menu,
-correctly counting submenus. This includes the "terminator" item at
-the end. So to copy a menu you need to copy
-<tt>size()*sizeof(Fl_Menu_Item)</tt> bytes.
-<H4><A name=Fl_Menu_Item.next>const Fl_Menu_Item*
-Fl_Menu_Item::next(int n=1) const
-<BR> Fl_Menu_Item* Fl_Menu_Item::next(int n=1);</A></H4>
- Advance a pointer by <TT>n</TT> items through a menu array, skipping
-the contents of submenus and invisible items. There are two calls so
-that you can advance through const and non-const data. </BODY></HTML>