path: root/doc/man/man3/qmenubar.3qt

'\" t
.TH QMenuBar 3qt "2 February 2007" "Trolltech AS" \" -*- nroff -*-
.\" Copyright 1992-2007 Trolltech ASA.  All rights reserved.  See the
.\" license file included in the distribution for a complete license
.\" statement.
.\"
.ad l
.nh
.SH NAME
QMenuBar \- Horizontal menu bar
.SH SYNOPSIS
\fC#include <ntqmenubar.h>\fR
.PP
Inherits QFrame and QMenuData.
.PP
.SS "Public Members"
.in +1c
.ti -1c
.BI "\fBQMenuBar\fR ( QWidget * parent = 0, const char * name = 0 )"
.br
.ti -1c
.BI "\fB~QMenuBar\fR ()"
.br
.ti -1c
.BI "virtual void \fBshow\fR ()"
.br
.ti -1c
.BI "virtual void \fBhide\fR ()"
.br
.ti -1c
.BI "virtual int \fBheightForWidth\fR ( int max_width ) const"
.br
.ti -1c
.BI "enum \fBSeparator\fR { Never = 0, InWindowsStyle = 1 }"
.br
.ti -1c
.BI "Separator separator () const  \fI(obsolete)\fR"
.br
.ti -1c
.BI "virtual void setSeparator ( Separator when )  \fI(obsolete)\fR"
.br
.ti -1c
.BI "void \fBsetDefaultUp\fR ( bool )"
.br
.ti -1c
.BI "bool \fBisDefaultUp\fR () const"
.br
.in -1c
.SS "Signals"
.in +1c
.ti -1c
.BI "void \fBactivated\fR ( int id )"
.br
.ti -1c
.BI "void \fBhighlighted\fR ( int id )"
.br
.in -1c
.SS "Important Inherited Members"
.in +1c
.ti -1c
.BI "int \fBinsertItem\fR ( const QString & text, const QObject * receiver, const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QIconSet & icon, const QString & text, const QObject * receiver, const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QPixmap & pixmap, const QObject * receiver, const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QIconSet & icon, const QPixmap & pixmap, const QObject * receiver, const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QString & text, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QIconSet & icon, const QString & text, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QString & text, QPopupMenu * popup, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QIconSet & icon, const QString & text, QPopupMenu * popup, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QPixmap & pixmap, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QIconSet & icon, const QPixmap & pixmap, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QPixmap & pixmap, QPopupMenu * popup, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QIconSet & icon, const QPixmap & pixmap, QPopupMenu * popup, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( QWidget * widget, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( const QIconSet & icon, QCustomMenuItem * custom, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertItem\fR ( QCustomMenuItem * custom, int id = -1, int index = -1 )"
.br
.ti -1c
.BI "int \fBinsertSeparator\fR ( int index = -1 )"
.br
.ti -1c
.BI "void \fBremoveItem\fR ( int id )"
.br
.ti -1c
.BI "void \fBclear\fR ()"
.br
.ti -1c
.BI "bool \fBisItemEnabled\fR ( int id ) const"
.br
.ti -1c
.BI "void \fBsetItemEnabled\fR ( int id, bool enable )"
.br
.ti -1c
.BI "bool \fBisItemVisible\fR ( int id ) const"
.br
.ti -1c
.BI "void \fBsetItemVisible\fR ( int id, bool visible )"
.br
.in -1c
.SS "Properties"
.in +1c
.ti -1c
.BI "bool \fBdefaultUp\fR - the popup orientation"
.br
.ti -1c
.BI "Separator separator - in which cases a menubar sparator is drawn  \fI(obsolete)\fR"
.br
.in -1c
.SS "Protected Members"
.in +1c
.ti -1c
.BI "virtual void \fBdrawContents\fR ( QPainter * p )"
.br
.ti -1c
.BI "virtual void \fBmenuContentsChanged\fR ()"
.br
.ti -1c
.BI "virtual void \fBmenuStateChanged\fR ()"
.br
.in -1c
.SH DESCRIPTION
The QMenuBar class provides a horizontal menu bar.
.PP
A menu bar consists of a list of pull-down menu items. You add menu items with insertItem(). For example, asuming that \fCmenubar\fR is a pointer to a QMenuBar and \fCfilemenu\fR is a pointer to a QPopupMenu, the following statement inserts the menu into the menu bar:
.PP
.nf
.br
    menubar->insertItem( "&File", filemenu );
.br
.fi
The ampersand in the menu item's text sets Alt+F as a shortcut for this menu. (You can use "&&" to get a real ampersand in the menu bar.)
.PP
Items are either enabled or disabled. You toggle their state with setItemEnabled().
.PP
There is no need to lay out a menu bar. It automatically sets its own geometry to the top of the parent widget and changes it appropriately whenever the parent is resized.
.PP
Example of creating a menu bar with menu items (from menu/menu.cpp):
.PP
.nf
.br
        QPopupMenu *file = new QPopupMenu( this );
.fi
.PP
.nf
.br
        file->insertItem( p1, "&Open",  this, SLOT(open()), CTRL+Key_O );
.br
        file->insertItem( p2, "&New", this, SLOT(news()), CTRL+Key_N );
.fi
.PP
.nf
.br
        menu = new QMenuBar( this );
.fi
.PP
.nf
.br
        menu->insertItem( "&File", file );
.fi
.PP
In most main window style applications you would use the menuBar() provided in QMainWindow, adding QPopupMenus to the menu bar and adding QActions to the popup menus.
.PP
Example (from action/application.cpp):
.PP
.nf
.br
        QPopupMenu * file = new QPopupMenu( this );
.br
        menuBar()->insertItem( "&File", file );
.br
        fileNewAction->addTo( file );
.fi
.PP
Menu items can have text and pixmaps (or iconsets), see the various insertItem() overloads, as well as separators, see insertSeparator(). You can also add custom menu items that are derived from QCustomMenuItem.
.PP
Menu items may be removed with removeItem() and enabled or disabled with setItemEnabled().
.PP
.ce 1
.B "[Image Omitted]"
.PP

.ce 1
.B "[Image Omitted]"
.PP
.SH "QMenuBar on Qt/Mac"
QMenuBar on Qt/Mac is a wrapper for using the system-wide menubar. If you have multiple menubars in one dialog the outermost menubar (normally inside a widget with widget flag WType_TopLevel) will be used for the system-wide menubar.
.PP
Note that arbitrary Qt widgets \fIcannot\fR be inserted into a QMenuBar on the Mac because Qt uses Mac's native menus which don't support this functionality. This limitation does not apply to stand-alone QPopupMenus.
.PP
Qt/Mac also provides a menubar merging feature to make QMenuBar conform more closely to accepted Mac OS X menubar layout. The merging functionality is based on string matching the title of a QPopupMenu entry. These strings are translated (using QObject::tr()) in the "QMenuBar" context. If an entry is moved its slots will still fire as if it was in the original place. The table below outlines the strings looked for and where the entry is placed if matched:
.PP
<center>.nf
.TS
l - l. String matches Placement Notes about.* Application Menu | About If this entry is not found no About item will appear in the Application Menu config, options, setup, settings or preferences Application Menu | Preferences If this entry is not found the Settings item will be disabled quit or exit Application Menu | Quit If this entry is not found a default Quit item will be created to call
.TE
.fi
</center>
.PP
menu/menu.cpp is an example of QMenuBar and QPopupMenu use.
.PP
See also QPopupMenu, QAccel, QAction, Aqua Style Guidelines, GUI Design Handbook: Menu Bar, and Main Window and Related Classes.
.SS "Member Type Documentation"
.SH "QMenuBar::Separator"
This enum type is used to decide whether QMenuBar should draw a separator line at its bottom.
.TP
\fCQMenuBar::Never\fR - In many applications there is already a separator, and having two looks wrong.
.TP
\fCQMenuBar::InWindowsStyle\fR - In some other applications a separator looks good in Windows style, but nowhere else.
.SH MEMBER FUNCTION DOCUMENTATION
.SH "QMenuBar::QMenuBar ( QWidget * parent = 0, const char * name = 0 )"
Constructs a menu bar called \fIname\fR with parent \fIparent\fR.
.SH "QMenuBar::~QMenuBar ()"
Destroys the menu bar.
.SH "void QMenuBar::activated ( int id )\fC [signal]\fR"
This signal is emitted when a menu item is selected; \fIid\fR is the id of the selected item.
.PP
Normally you will connect each menu item to a single slot using QMenuData::insertItem(), but sometimes you will want to connect several items to a single slot (most often if the user selects from an array). This signal is useful in such cases.
.PP
See also highlighted() and QMenuData::insertItem().
.PP
Example: progress/progress.cpp.
.SH "void QMenuData::clear ()"
Removes all menu items.
.PP
See also removeItem() and removeItemAt().
.PP
Examples:
.)l mdi/application.cpp and qwerty/qwerty.cpp.
.SH "void QMenuBar::drawContents ( QPainter * p )\fC [virtual protected]\fR"
Called from QFrame::paintEvent(). Draws the menu bar contents using painter \fIp\fR.
.PP
Reimplemented from QFrame.
.SH "int QMenuBar::heightForWidth ( int max_width ) const\fC [virtual]\fR"
Returns the height that the menu would resize itself to if its parent (and hence itself) resized to the given \fImax_width\fR. This can be useful for simple layout tasks in which the height of the menu bar is needed after items have been inserted. See showimg/showimg.cpp for an example of the usage.
.PP
Example: showimg/showimg.cpp.
.PP
Reimplemented from QWidget.
.SH "void QMenuBar::hide ()\fC [virtual]\fR"
Reimplements QWidget::hide() in order to deselect any selected item, and calls setUpLayout() for the main window.
.PP
Example: grapher/grapher.cpp.
.PP
Reimplemented from QWidget.
.SH "void QMenuBar::highlighted ( int id )\fC [signal]\fR"
This signal is emitted when a menu item is highlighted; \fIid\fR is the id of the highlighted item.
.PP
Normally, you will connect each menu item to a single slot using QMenuData::insertItem(), but sometimes you will want to connect several items to a single slot (most often if the user selects from an array). This signal is useful in such cases.
.PP
See also activated() and QMenuData::insertItem().
.SH "int QMenuData::insertItem ( const QString & text, const QObject * receiver, const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )"
The family of insertItem() functions inserts menu items into a popup menu or a menu bar.
.PP
A menu item is usually either a text string or a pixmap, both with an optional icon or keyboard accelerator. For special cases it is also possible to insert custom items (see QCustomMenuItem) or even widgets into popup menus.
.PP
Some insertItem() members take a popup menu as an additional argument. Use this to insert submenus into existing menus or pulldown menus into a menu bar.
.PP
The number of insert functions may look confusing, but they are actually quite simple to use.
.PP
This default version inserts a menu item with the text \fItext\fR, the accelerator key \fIaccel\fR, an id and an optional index and connects it to the slot \fImember\fR in the object \fIreceiver\fR.
.PP
Example:
.PP
.nf
.br
        QMenuBar   *mainMenu = new QMenuBar;
.br
        QPopupMenu *fileMenu = new QPopupMenu;
.br
        fileMenu->insertItem( "New",  myView, SLOT(newFile()), CTRL+Key_N );
.br
        fileMenu->insertItem( "Open", myView, SLOT(open()),    CTRL+Key_O );
.br
        mainMenu->insertItem( "File", fileMenu );
.br
.fi
.PP
Not all insert functions take an object/slot parameter or an accelerator key. Use connectItem() and setAccel() on those items.
.PP
If you need to translate accelerators, use tr() with the text and accelerator. (For translations use a string key sequence.):
.PP
.nf
.br
        fileMenu->insertItem( tr("Open"), myView, SLOT(open()),
.br
                              tr("Ctrl+O") );
.br
.fi
.PP
In the example above, pressing Ctrl+O or selecting "Open" from the menu activates the myView->open() function.
.PP
Some insert functions take a QIconSet parameter to specify the little menu item icon. Note that you can always pass a QPixmap object instead.
.PP
The \fIid\fR specifies the identification number associated with the menu item. Note that only positive values are valid, as a negative value will make Qt select a unique id for the item.
.PP
The \fIindex\fR specifies the position in the menu. The menu item is appended at the end of the list if \fIindex\fR is negative.
.PP
Note that keyboard accelerators in Qt are not application-global, instead they are bound to a certain top-level window. For example, accelerators in QPopupMenu items only work for menus that are associated with a certain window. This is true for popup menus that live in a menu bar since their accelerators will then be installed in the menu bar itself. This also applies to stand-alone popup menus that have a top-level widget in their parentWidget() chain. The menu will then install its accelerator object on that top-level widget. For all other cases use an independent QAccel object.
.PP
\fBWarning:\fR Be careful when passing a literal 0 to insertItem() because some C++ compilers choose the wrong overloaded function. Cast the 0 to what you mean, e.g. \fC(QObject*)0\fR.
.PP
\fBWarning:\fR On Mac OS X, items that connect to a slot that are inserted into a menubar will not function as we use the native menubar that knows nothing about signals or slots. Instead insert the items into a popup menu and insert the popup menu into the menubar. This may be fixed in a future Qt version.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), connectItem(), QAccel, and ntqnamespace.h.
.PP
Examples:
.)l addressbook/mainwindow.cpp, canvas/canvas.cpp, menu/menu.cpp, qwerty/qwerty.cpp, scrollview/scrollview.cpp, showimg/showimg.cpp, and sound/sound.cpp.
.SH "int QMenuData::insertItem ( const QIconSet & icon, const QString & text, const QObject * receiver, const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with icon \fIicon\fR, text \fItext\fR, accelerator \fIaccel\fR, optional id \fIid\fR, and optional \fIindex\fR position. The menu item is connected it to the \fIreceiver\fR's \fImember\fR slot. The icon will be displayed to the left of the text in the item.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), connectItem(), QAccel, and ntqnamespace.h.
.SH "int QMenuData::insertItem ( const QPixmap & pixmap, const QObject * receiver, const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with pixmap \fIpixmap\fR, accelerator \fIaccel\fR, optional id \fIid\fR, and optional \fIindex\fR position. The menu item is connected it to the \fIreceiver\fR's \fImember\fR slot. The icon will be displayed to the left of the text in the item.
.PP
To look best when being highlighted as a menu item, the pixmap should provide a mask (see QPixmap::mask()).
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( const QIconSet & icon, const QPixmap & pixmap, const QObject * receiver, const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with icon \fIicon\fR, pixmap \fIpixmap\fR, accelerator \fIaccel\fR, optional id \fIid\fR, and optional \fIindex\fR position. The icon will be displayed to the left of the pixmap in the item. The item is connected to the \fImember\fR slot in the \fIreceiver\fR object.
.PP
To look best when being highlighted as a menu item, the pixmap should provide a mask (see QPixmap::mask()).
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), connectItem(), QAccel, and ntqnamespace.h.
.SH "int QMenuData::insertItem ( const QString & text, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with text \fItext\fR, optional id \fIid\fR, and optional \fIindex\fR position.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( const QIconSet & icon, const QString & text, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with icon \fIicon\fR, text \fItext\fR, optional id \fIid\fR, and optional \fIindex\fR position. The icon will be displayed to the left of the text in the item.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( const QString & text, QPopupMenu * popup, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with text \fItext\fR, submenu \fIpopup\fR, optional id \fIid\fR, and optional \fIindex\fR position.
.PP
The \fIpopup\fR must be deleted by the programmer or by its parent widget. It is not deleted when this menu item is removed or when the menu is deleted.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( const QIconSet & icon, const QString & text, QPopupMenu * popup, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with icon \fIicon\fR, text \fItext\fR, submenu \fIpopup\fR, optional id \fIid\fR, and optional \fIindex\fR position. The icon will be displayed to the left of the text in the item.
.PP
The \fIpopup\fR must be deleted by the programmer or by its parent widget. It is not deleted when this menu item is removed or when the menu is deleted.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( const QPixmap & pixmap, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with pixmap \fIpixmap\fR, optional id \fIid\fR, and optional \fIindex\fR position.
.PP
To look best when being highlighted as a menu item, the pixmap should provide a mask (see QPixmap::mask()).
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( const QIconSet & icon, const QPixmap & pixmap, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with icon \fIicon\fR, pixmap \fIpixmap\fR, optional id \fIid\fR, and optional \fIindex\fR position. The icon will be displayed to the left of the pixmap in the item.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( const QPixmap & pixmap, QPopupMenu * popup, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with pixmap \fIpixmap\fR, submenu \fIpopup\fR, optional id \fIid\fR, and optional \fIindex\fR position.
.PP
The \fIpopup\fR must be deleted by the programmer or by its parent widget. It is not deleted when this menu item is removed or when the menu is deleted.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( const QIconSet & icon, const QPixmap & pixmap, QPopupMenu * popup, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item with icon \fIicon\fR, pixmap \fIpixmap\fR submenu \fIpopup\fR, optional id \fIid\fR, and optional \fIindex\fR position. The icon will be displayed to the left of the pixmap in the item.
.PP
The \fIpopup\fR must be deleted by the programmer or by its parent widget. It is not deleted when this menu item is removed or when the menu is deleted.
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem(), changeItem(), setAccel(), and connectItem().
.SH "int QMenuData::insertItem ( QWidget * widget, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a menu item that consists of the widget \fIwidget\fR with optional id \fIid\fR, and optional \fIindex\fR position.
.PP
Ownership of \fIwidget\fR is transferred to the popup menu or to the menu bar.
.PP
Theoretically, any widget can be inserted into a popup menu. In practice, this only makes sense with certain widgets.
.PP
If a widget is not focus-enabled (see QWidget::isFocusEnabled()), the menu treats it as a separator; this means that the item is not selectable and will never get focus. In this way you can, for example, simply insert a QLabel if you need a popup menu with a title.
.PP
If the widget is focus-enabled it will get focus when the user traverses the popup menu with the arrow keys. If the widget does not accept \fCArrowUp\fR and \fCArrowDown\fR in its key event handler, the focus will move back to the menu when the respective arrow key is hit one more time. This works with a QLineEdit, for example. If the widget accepts the arrow key itself, it must also provide the possibility to put the focus back on the menu again by calling QWidget::focusNextPrevChild(). Futhermore, if the embedded widget closes the menu when the user made a selection, this can be done safely by calling:
.PP
.nf
.br
        if ( isVisible() &&
.br
             parentWidget() &&
.br
             parentWidget()->inherits("QPopupMenu") )
.br
            parentWidget()->close();
.br
.fi
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also removeItem().
.SH "int QMenuData::insertItem ( const QIconSet & icon, QCustomMenuItem * custom, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a custom menu item \fIcustom\fR with an \fIicon\fR and with optional id \fIid\fR, and optional \fIindex\fR position.
.PP
This only works with popup menus. It is not supported for menu bars. Ownership of \fIcustom\fR is transferred to the popup menu.
.PP
If you want to connect a custom item to a slot, use connectItem().
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also connectItem(), removeItem(), and QCustomMenuItem.
.SH "int QMenuData::insertItem ( QCustomMenuItem * custom, int id = -1, int index = -1 )"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Inserts a custom menu item \fIcustom\fR with optional id \fIid\fR, and optional \fIindex\fR position.
.PP
This only works with popup menus. It is not supported for menu bars. Ownership of \fIcustom\fR is transferred to the popup menu.
.PP
If you want to connect a custom item to a slot, use connectItem().
.PP
Returns the allocated menu identifier number (\fIid\fR if \fIid\fR >= 0).
.PP
See also connectItem(), removeItem(), and QCustomMenuItem.
.SH "int QMenuData::insertSeparator ( int index = -1 )"
Inserts a separator at position \fIindex\fR, and returns the menu identifier number allocated to it. The separator becomes the last menu item if \fIindex\fR is negative.
.PP
In a popup menu a separator is rendered as a horizontal line. In a Motif menu bar a separator is spacing, so the rest of the items (normally just "Help") are drawn right-justified. In a Windows menu bar separators are ignored (to comply with the Windows style guidelines).
.PP
Examples:
.)l addressbook/mainwindow.cpp, menu/menu.cpp, progress/progress.cpp, qwerty/qwerty.cpp, scrollview/scrollview.cpp, showimg/showimg.cpp, and sound/sound.cpp.
.SH "bool QMenuBar::isDefaultUp () const"
Returns the popup orientation. See the "defaultUp" property for details.
.SH "bool QMenuData::isItemEnabled ( int id ) const"
Returns TRUE if the item with identifier \fIid\fR is enabled; otherwise returns FALSE
.PP
See also setItemEnabled() and isItemVisible().
.SH "bool QMenuData::isItemVisible ( int id ) const"
Returns TRUE if the menu item with the id \fIid\fR is visible; otherwise returns FALSE.
.PP
See also setItemVisible().
.SH "void QMenuBar::menuContentsChanged ()\fC [virtual protected]\fR"
Recomputes the menu bar's display data according to the new contents.
.PP
You should never need to call this; it is called automatically by QMenuData whenever it needs to be called.
.PP
Reimplemented from QMenuData.
.SH "void QMenuBar::menuStateChanged ()\fC [virtual protected]\fR"
Recomputes the menu bar's display data according to the new state.
.PP
You should never need to call this; it is called automatically by QMenuData whenever it needs to be called.
.PP
Reimplemented from QMenuData.
.SH "void QMenuData::removeItem ( int id )"
Removes the menu item that has the identifier \fIid\fR.
.PP
See also removeItemAt() and clear().
.PP
Example: chart/chartform.cpp.
.SH "Separator QMenuBar::separator () const"
Returns in which cases a menubar sparator is drawn. See the "separator" property for details.
.SH "void QMenuBar::setDefaultUp ( bool )"
Sets the popup orientation. See the "defaultUp" property for details.
.SH "void QMenuData::setItemEnabled ( int id, bool enable )"
If \fIenable\fR is TRUE, enables the menu item with identifier \fIid\fR; otherwise disables the menu item with identifier \fIid\fR.
.PP
See also isItemEnabled().
.PP
Examples:
.)l mdi/application.cpp, menu/menu.cpp, progress/progress.cpp, and showimg/showimg.cpp.
.SH "void QMenuData::setItemVisible ( int id, bool visible )"
If \fIvisible\fR is TRUE, shows the menu item with id \fIid\fR; otherwise hides the menu item with id \fIid\fR.
.PP
See also isItemVisible() and isItemEnabled().
.SH "void QMenuBar::setSeparator ( Separator when )\fC [virtual]\fR"
Sets in which cases a menubar sparator is drawn to \fIwhen\fR. See the "separator" property for details.
.SH "void QMenuBar::show ()\fC [virtual]\fR"
Reimplements QWidget::show() in order to set up the correct keyboard accelerators and to raise itself to the top of the widget stack.
.PP
Example: grapher/grapher.cpp.
.PP
Reimplemented from QWidget.
.SS "Property Documentation"
.SH "bool defaultUp"
This property holds the popup orientation.
.PP
The default popup orientation. By default, menus pop "down" the screen. By setting the property to TRUE, the menu will pop "up". You might call this for menus that are \fIbelow\fR the document to which they refer.
.PP
If the menu would not fit on the screen, the other direction is used automatically.
.PP
Set this property's value with setDefaultUp() and get this property's value with isDefaultUp().
.SH "Separator separator"
This property holds in which cases a menubar sparator is drawn.
.PP
\fBThis property is obsolete.\fR It is provided to keep old source working. We strongly advise against using it in new code.
.PP
Set this property's value with setSeparator() and get this property's value with separator().

.SH "SEE ALSO"
.BR http://doc.trolltech.com/ntqmenubar.html
.BR http://www.trolltech.com/faq/tech.html
.SH COPYRIGHT
Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the
license file included in the distribution for a complete license
statement.
.SH AUTHOR
Generated automatically from the source code.
.SH BUGS
If you find a bug in Qt, please report it as described in
.BR http://doc.trolltech.com/bughowto.html .
Good bug reports help us to help you. Thank you.
.P
The definitive Qt documentation is provided in HTML format; it is
located at $QTDIR/doc/html and can be read using Qt Assistant or with
a web browser. This man page is provided as a convenience for those
users who prefer man pages, although this format is not officially
supported by Trolltech. 
.P
If you find errors in this manual page, please report them to
.BR qt-bugs@trolltech.com .
Please include the name of the manual page (qmenubar.3qt) and the Qt
version (3.3.8).