👤
Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:
Select Section of Man Page:
Select Man Page Repository:

RedHat 9 (Linux i386) - man page for qpopupmenu (redhat section 3qt)

QPopupMenu(3qt) 								  QPopupMenu(3qt)

NAME
       QPopupMenu - Popup menu widget

SYNOPSIS
       #include <qpopupmenu.h>

       Inherits QFrame and QMenuData.

   Public Members
       QPopupMenu ( QWidget * parent = 0, const char * name = 0 )
       ~QPopupMenu ()
       void popup ( const QPoint & pos, int indexAtPoint = -1 )
       virtual void updateItem ( int id )
       virtual void setCheckable ( bool )
       bool isCheckable () const
       int exec ()
       int exec ( const QPoint & pos, int indexAtPoint = 0 )
       virtual void setActiveItem ( int i )
       int idAt ( int index ) const
       int idAt ( const QPoint & pos ) const
       int insertTearOffHandle ( int id = -1, int index = -1 )

   Signals
       void activated ( int id )
       void highlighted ( int id )
       void aboutToShow ()
       void aboutToHide ()

   Important Inherited Members
       int insertItem ( const QString & text, const QObject * receiver, const char * member,
	   const QKeySequence & accel = 0, int id = -1, int index = -1 )
       int insertItem ( const QIconSet & icon, const QString & text, const QObject * receiver,
	   const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )
       int insertItem ( const QPixmap & pixmap, const QObject * receiver, const char * member,
	   const QKeySequence & accel = 0, int id = -1, int index = -1 )
       int insertItem ( const QIconSet & icon, const QPixmap & pixmap, const QObject * receiver,
	   const char * member, const QKeySequence & accel = 0, int id = -1, int index = -1 )
       int insertItem ( const QString & text, int id = -1, int index = -1 )
       int insertItem ( const QIconSet & icon, const QString & text, int id = -1, int index = -1
	   )
       int insertItem ( const QString & text, QPopupMenu * popup, int id = -1, int index = -1 )
       int insertItem ( const QIconSet & icon, const QString & text, QPopupMenu * popup, int id =
	   -1, int index = -1 )
       int insertItem ( const QPixmap & pixmap, int id = -1, int index = -1 )
       int insertItem ( const QIconSet & icon, const QPixmap & pixmap, int id = -1, int index =
	   -1 )
       int insertItem ( const QPixmap & pixmap, QPopupMenu * popup, int id = -1, int index = -1 )
       int insertItem ( const QIconSet & icon, const QPixmap & pixmap, QPopupMenu * popup, int id
	   = -1, int index = -1 )
       int insertItem ( QWidget * widget, int id = -1, int index = -1 )
       int insertItem ( const QIconSet & icon, QCustomMenuItem * custom, int id = -1, int index =
	   -1 )
       int insertItem ( QCustomMenuItem * custom, int id = -1, int index = -1 )
       int insertSeparator ( int index = -1 )
       void removeItem ( int id )
       void removeItemAt ( int index )
       void clear ()
       QKeySequence accel ( int id ) const
       void setAccel ( const QKeySequence & key, int id )
       QIconSet * iconSet ( int id ) const
       QString text ( int id ) const
       QPixmap * pixmap ( int id ) const
       void setWhatsThis ( int id, const QString & text )
       QString whatsThis ( int id ) const
       void changeItem ( int id, const QString & text )
       void changeItem ( int id, const QPixmap & pixmap )
       void changeItem ( int id, const QIconSet & icon, const QString & text )
       void changeItem ( int id, const QIconSet & icon, const QPixmap & pixmap )
       bool isItemEnabled ( int id ) const
       void setItemEnabled ( int id, bool enable )
       bool isItemChecked ( int id ) const
       void setItemChecked ( int id, bool check )
       bool isItemVisible ( int id ) const
       void setItemVisible ( int id, bool visible )
       bool connectItem ( int id, const QObject * receiver, const char * member )
       bool disconnectItem ( int id, const QObject * receiver, const char * member )
       bool setItemParameter ( int id, int param )
       int itemParameter ( int id ) const

   Properties
       bool checkable - whether the display of check marks on menu items is enabled

   Protected Members
       int itemHeight ( int row ) const
       int itemHeight ( QMenuItem * mi ) const
       void drawItem ( QPainter * p, int tab_, QMenuItem * mi, bool act, int x, int y, int w, int
	   h )
       virtual void drawContents ( QPainter * p )
       int columns () const

DESCRIPTION
       The QPopupMenu class provides a popup menu widget.

       A popup menu widget is a selection menu. It can be either a pull-down menu in a menu bar
       or a standalone context (popup) menu. Pull-down menus are shown by the menu bar when the
       user clicks on the respective item or presses the specified shortcut key. Use
       QMenuBar::insertItem() to insert a popup menu into a menu bar. Show a context menu either
       asynchronously with popup() or synchronously with exec().

       Technically, a popup menu consists of a list of menu items. You add items with
       insertItem(). An item is either a string, a pixmap or a custom item that provides its own
       drawing function (see QCustomMenuItem). In addition, items can have an optional icon drawn
       on the very left side and an accelerator key such as" Ctrl+X".

       There are three kinds of menu items: separators, menu items that perform an action and
       menu items that show a submenu. Separators are inserted with insertSeparator(). For
       submenus, you pass a pointer to a QPopupMenu in your call to insertItem(). All other items
       are considered action items.

       When inserting action items you usually specify a receiver and a slot. The receiver will
       be notifed whenever the item is selected. In addition, QPopupMenu provides two signals,
       activated() and highlighted(), which signal the identifier of the respective menu item. It
       is sometimes practical to connect several items to one slot. To distinguish between them,
       specify a slot that takes an integer argument and use setItemParameter() to associate a
       unique value with each item.

       You clear a popup menu with clear() and remove single items with removeItem() or
       removeItemAt().

       A popup menu can display check marks for certain items when enabled with
       setCheckable(TRUE). You check or uncheck items with setItemChecked().

       Items are either enabled or disabled. You toggle their state with setItemEnabled(). Just
       before a popup menu becomes visible, it emits the aboutToShow() signal. You can use this
       signal to set the correct enabled/disabled states of all menu items before the user sees
       it. The corresponding aboutToHide() signal is emitted when the menu hides again.

       You can provide What's This? help for single menu items with setWhatsThis(). See
       QWhatsThis for general information about this kind of lightweight online help.

       For ultimate flexibility, you can also add entire widgets as items into a popup menu (for
       example, a color selector).

       A QPopupMenu can also provide a tear-off menu. A tear-off menu is a top-level window that
       contains a copy of the menu. This makes it possible for the user to "tear off" frequently
       used menus and position them in a convenient place on the screen. If you want that
       functionality for a certain menu, insert a tear-off handle with insertTearOffHandle().
       When using tear-off menus, bear in mind that the concept isn't typically used on Microsoft
       Windows so users may not be familiar with it. Consider using a QToolBar instead. Tear-off
       menus cannot contain custom widgets; if the original menu contains a custom widget item,
       this item is omitted.

       menu/menu.cpp is an example of QMenuBar and QPopupMenu use.

					    [Image Omitted]

					    [Image Omitted]

       See also QMenuBar, GUI Design Handbook: Menu, Drop-Down and Pop-Up, Main Window and
       Related Classes, and Basic Widgets.

MEMBER FUNCTION DOCUMENTATION
QPopupMenu::QPopupMenu ( QWidget * parent = 0, const char * name = 0 )
       Constructs a popup menu called name with parent parent.

       Although a popup menu is always a top-level widget, if a parent is passed the popup menu
       will be deleted when that parent is destroyed (as with any other QObject).

QPopupMenu::~QPopupMenu ()
       Destroys the popup menu.

void QPopupMenu::aboutToHide () [signal]
       This signal is emitted just before the popup menu is hidden after it has been displayed.

       Warning: Do not open a widget in a slot connected to this signal.

       See also aboutToShow(), setItemEnabled(), setItemChecked(), insertItem(), and
       removeItem().

void QPopupMenu::aboutToShow () [signal]
       This signal is emitted just before the popup menu is displayed. You can connect it to any
       slot that sets up the menu contents (e.g. to ensure that the right items are enabled).

       See also aboutToHide(), setItemEnabled(), setItemChecked(), insertItem(), and
       removeItem().

       Example: mdi/application.cpp.

QKeySequence QMenuData::accel ( int id ) const
       Returns the accelerator key that has been defined for the menu item id, or 0 if it has no
       accelerator key or if there is no such menu item.

       See also setAccel(), QAccel, and qnamespace.h.

void QPopupMenu::activated ( int id ) [signal]
       This signal is emitted when a menu item is selected; id is the id of the selected item.

       Normally, you 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.

       See also highlighted() and QMenuData::insertItem().

       Examples:

void QMenuData::changeItem ( int id, const QString & text )
       Changes the text of the menu item id to text. If the item has an icon, the icon remains
       unchanged.

       See also text().

void QMenuData::changeItem ( int id, const QPixmap & pixmap )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Changes the pixmap of the menu item id to the pixmap pixmap. If the item has an icon, the
       icon is unchanged.

       See also pixmap().

void QMenuData::changeItem ( int id, const QIconSet & icon, const QString & text )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Changes the iconset and text of the menu item id to the icon and text respectively.

       See also pixmap().

void QMenuData::changeItem ( int id, const QIconSet & icon, const QPixmap & pixmap )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Changes the iconset and pixmap of the menu item id to icon and pixmap respectively.

       See also pixmap().

void QMenuData::clear ()
       Removes all menu items.

       See also removeItem() and removeItemAt().

       Examples:

int QPopupMenu::columns () const [protected]
       If a popup menu does not fit on the screen it lays itself out so that it does fit. It is
       style dependent what layout means (for example, on Windows it will use multiple columns).

       This functions returns the number of columns necessary.

       See also sizeHint.

bool QMenuData::connectItem ( int id, const QObject * receiver, const char * member )
       Connects the menu item with identifier id to receiver's member slot or signal.

       The receiver's slot (or signal) is activated when the menu item is activated.

       See also disconnectItem() and setItemParameter().

       Example: menu/menu.cpp.

bool QMenuData::disconnectItem ( int id, const QObject * receiver, const char * member )
       Disconnects the receiver's member from the menu item with identifier id.

       All connections are removed when the menu data object is destroyed.

       See also connectItem() and setItemParameter().

void QPopupMenu::drawContents ( QPainter * p ) [virtual protected]
       Draws all menu items using painter p.

       Reimplemented from QFrame.

void QPopupMenu::drawItem ( QPainter * p, int tab_, QMenuItem * mi, bool act, int x, int y, int
       w, int h ) [protected]
       Draws menu item mi in the area x, y, w, h, using painter p. The item is drawn active if
       act is TRUE or drawn inactive if act is FALSE. The rightmost tab_ pixels are used for
       accelerator text.

       See also QStyle::drawControl().

int QPopupMenu::exec ()
       Executes this popup synchronously.

       This is equivalent to exec(mapToGlobal(QPoint(0,0))). In most situations you'll want to
       specify the position yourself, for example at the current mouse position:

	       exec(QCursor::pos());
       or aligned to a widget:

	       exec(somewidget.mapToGlobal(QPoint(0,0)));

       Examples:

int QPopupMenu::exec ( const QPoint & pos, int indexAtPoint = 0 )
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Executes this popup synchronously.

       Opens the popup menu so that the item number indexAtPoint will be at the specified global
       position pos. To translate a widget's local coordinates into global coordinates, use
       QWidget::mapToGlobal().

       The return code is the id of the selected item in either the popup menu or one of its
       submenus, or -1 if no item is selected (normally because the user pressed Esc).

       Note that all signals are emitted as usual. If you connect a menu item to a slot and call
       the menu's exec(), you get the result both via the signal-slot connection and in the
       return value of exec().

       Common usage is to position the popup at the current mouse position:

	       exec( QCursor::pos() );
       or aligned to a widget:

	       exec( somewidget.mapToGlobal(QPoint(0, 0)) );

       When positioning a popup with exec() or popup(), bear in mind that you cannot rely on the
       popup menu's current size(). For performance reasons, the popup adapts its size only when
       necessary. So in many cases, the size before and after the show is different. Instead, use
       sizeHint(). It calculates the proper size depending on the menu's current contents.

       See also popup() and sizeHint.

void QPopupMenu::highlighted ( int id ) [signal]
       This signal is emitted when a menu item is highlighted; id is the id of the highlighted
       item.

       See also activated() and QMenuData::insertItem().

QIconSet * QMenuData::iconSet ( int id ) const
       Returns the icon set that has been set for menu item id, or 0 if no icon set has been set.

       See also changeItem(), text(), and pixmap().

int QPopupMenu::idAt ( int index ) const
       Returns the identifier of the menu item at position index in the internal list, or -1 if
       index is out of range.

       See also QMenuData::setId() and QMenuData::indexOf().

       Example: scrollview/scrollview.cpp.

int QPopupMenu::idAt ( const QPoint & pos ) const
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Returns the id of the item at pos, or -1 if there is no item there or if it is a
       separator.

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.

       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.

       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.

       The number of insert functions may look confusing, but they are actually quite simple to
       use.

       This default version inserts a menu item with the text text, the accelerator key accel, an
       id and an optional index and connects it to the slot member in the object receiver.

       Example:

	       QMenuBar   *mainMenu = new QMenuBar;
	       QPopupMenu *fileMenu = new QPopupMenu;
	       fileMenu->insertItem( "New",  myView, SLOT(newFile()), CTRL+Key_N );
	       fileMenu->insertItem( "Open", myView, SLOT(open()),    CTRL+Key_O );
	       mainMenu->insertItem( "File", fileMenu );

       Not all insert functions take an object/slot parameter or an accelerator key. Use
       connectItem() and setAccel() on those items.

       If you need to translate accelerators, use tr() with the text and accelerator. (For
       translations use a string key sequence.):

	       fileMenu->insertItem( tr("Open"), myView, SLOT(open()),
				     tr("Ctrl+O") );

       In the example above, pressing Ctrl+O or selecting "Open" from the menu activates the
       myView->open() function.

       Some insert functions take a QIconSet parameter to specify the little menu item icon. Note
       that you can always pass a QPixmap object instead.

       The index specifies the position in the menu. The menu item is appended at the end of the
       list if index is negative.

       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.

       Warning: 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. (QObject*)0.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), connectItem(), QAccel, and qnamespace.h.

       Examples:

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.

       Inserts a menu item with icon icon, text text, accelerator accel, optional id id, and
       optional index position. The menu item is connected it to the receiver's member slot. The
       icon will be displayed to the left of the text in the item.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), connectItem(), QAccel, and qnamespace.h.

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.

       Inserts a menu item with pixmap pixmap, accelerator accel, optional id id, and optional
       index position. The menu item is connected it to the receiver's member slot. The icon will
       be displayed to the left of the text in the item.

       To look best when being highlighted as a menu item, the pixmap should provide a mask (see
       QPixmap::mask()).

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item with icon icon, pixmap pixmap, accelerator accel, optional id id, and
       optional index position. The icon will be displayed to the left of the pixmap in the item.
       The item is connected to the member slot in the receiver object.

       To look best when being highlighted as a menu item, the pixmap should provide a mask (see
       QPixmap::mask()).

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), connectItem(), QAccel, and qnamespace.h.

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.

       Inserts a menu item with text text, optional id id, and optional index position.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item with icon icon, text text, optional id id, and optional index
       position. The icon will be displayed to the left of the text in the item.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item with text text, submenu popup, optional id id, and optional index
       position.

       The popup 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.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item with icon icon, text text, submenu popup, optional id id, and optional
       index position. The icon will be displayed to the left of the text in the item.

       The popup 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.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item with pixmap pixmap, optional id id, and optional index position.

       To look best when being highlighted as a menu item, the pixmap should provide a mask (see
       QPixmap::mask()).

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item with icon icon, pixmap pixmap, optional id id, and optional index
       position. The icon will be displayed to the left of the pixmap in the item.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item with pixmap pixmap, submenu popup, optional id id, and optional index
       position.

       The popup 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.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item with icon icon, pixmap pixmap submenu popup, optional id id, and
       optional index position. The icon will be displayed to the left of the pixmap in the item.

       The popup 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.

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem(), changeItem(), setAccel(), and connectItem().

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.

       Inserts a menu item that consists of the widget widget with optional id id, and optional
       index position.

       Ownership of widget is transferred to the popup menu or to the menu bar.

       Theoretically, any widget can be inserted into a popup menu. In practice, this only makes
       sense with certain widgets.

       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.

       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 ArrowUp and ArrowDown 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:

	       if ( isVisible() &&
		    parentWidget() &&
		    parentWidget()->inherits("QPopupMenu") )
		   parentWidget()->close();

       Returns the allocated menu identifier number (id if id >= 0).

       See also removeItem().

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.

       Inserts a custom menu item custom with an icon and with optional id id, and optional index
       position.

       This only works with popup menus. It is not supported for menu bars. Ownership of custom
       is transferred to the popup menu.

       If you want to connect a custom item to a slot, use connectItem().

       Returns the allocated menu identifier number (id if id >= 0).

       See also connectItem(), removeItem(), and QCustomMenuItem.

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.

       Inserts a custom menu item custom with optional id id, and optional index position.

       This only works with popup menus. It is not supported for menu bars. Ownership of custom
       is transferred to the popup menu.

       If you want to connect a custom item to a slot, use connectItem().

       Returns the allocated menu identifier number (id if id >= 0).

       See also connectItem(), removeItem(), and QCustomMenuItem.

int QMenuData::insertSeparator ( int index = -1 )
       Inserts a separator at position index. The separator becomes the last menu item if index
       is negative.

       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).

       Examples:

int QPopupMenu::insertTearOffHandle ( int id = -1, int index = -1 )
       Inserts a tear-off handle into the menu. A tear-off handle is a special menu item that
       creates a copy of the menu when the menu is selected. This "torn-off" copy lives in a
       separate window. It contains the same menu items as the original menu, with the exception
       of the tear-off handle.

       The handle item is assigned the identifier id or an automatically generated identifier if
       id is < 0. The generated identifiers (negative integers) are guaranteed to be unique
       within the entire application.

       The index specifies the position in the menu. The tear-off handle is appended at the end
       of the list if index is negative.

       Example: menu/menu.cpp.

bool QPopupMenu::isCheckable () const
       Returns TRUE if the display of check marks on menu items is enabled; otherwise returns
       FALSE. See the "checkable" property for details.

bool QMenuData::isItemChecked ( int id ) const
       Returns TRUE if the menu item with the id id has been checked; otherwise returns FALSE.

       See also setItemChecked().

       Examples:

bool QMenuData::isItemEnabled ( int id ) const
       Returns TRUE if the item with identifier id is enabled; otherwise returns FALSE

       See also setItemEnabled() and isItemVisible().

bool QMenuData::isItemVisible ( int id ) const
       Returns TRUE if the menu item with the id id is visible; otherwise returns FALSE.

       See also setItemVisible().

int QPopupMenu::itemHeight ( int row ) const [protected]
       Calculates the height in pixels of the item in row row.

int QPopupMenu::itemHeight ( QMenuItem * mi ) const [protected]
       This is an overloaded member function, provided for convenience. It behaves essentially
       like the above function.

       Calculates the height in pixels of the menu item mi.

int QMenuData::itemParameter ( int id ) const
       Returns the parameter of the activation signal of item id.

       If no parameter has been specified for this item with setItemParameter(), the value
       defaults to id.

       See also connectItem(), disconnectItem(), and setItemParameter().

QPixmap * QMenuData::pixmap ( int id ) const
       Returns the pixmap that has been set for menu item id, or 0 if no pixmap has been set.

       See also changeItem(), text(), and iconSet().

void QPopupMenu::popup ( const QPoint & pos, int indexAtPoint = -1 )
       Displays the popup menu so that the item number indexAtPoint will be at the specified
       global position pos. To translate a widget's local coordinates into global coordinates,
       use QWidget::mapToGlobal().

       When positioning a popup with exec() or popup(), bear in mind that you cannot rely on the
       popup menu's current size(). For performance reasons, the popup adapts its size only when
       necessary, so in many cases, the size before and after the show is different. Instead, use
       sizeHint(). It calculates the proper size depending on the menu's current contents.

       Example: listviews/listviews.cpp.

void QMenuData::removeItem ( int id )
       Removes the menu item that has the identifier id.

       See also removeItemAt() and clear().

       Example: chart/chartform.cpp.

void QMenuData::removeItemAt ( int index )
       Removes the menu item at position index.

       See also removeItem() and clear().

void QMenuData::setAccel ( const QKeySequence & key, int id )
       Sets the accelerator key for the menu item id to key.

       An accelerator key consists of a key code and a combination of the modifiers SHIFT, CTRL,
       ALT or UNICODE_ACCEL (OR'ed or added). The header file qnamespace.h contains a list of key
       codes.

       Defining an accelerator key produces a text that is added to the menu item; for instance,
       CTRL + Key_O produces "Ctrl+O". The text is formatted differently for different platforms.

       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.

       Example:

	       QMenuBar *mainMenu = new QMenuBar;
	       QPopupMenu *fileMenu = new QPopupMenu;	    // file sub menu
	       fileMenu->insertItem( "Open Document", 67 ); // add "Open" item
	       fileMenu->setAccel( CTRL + Key_O, 67 );	    // Ctrl+O to open
	       fileMenu->insertItem( "Quit", 69 );	    // add "Quit" item
	       fileMenu->setAccel( CTRL + ALT + Key_Delete, 69 ); // add Alt+Del to quit
	       mainMenu->insertItem( "File", fileMenu );    // add the file menu

       If you need to translate accelerators, use tr() with a string:

	       fileMenu->setAccel( tr("Ctrl+O"), 67 );

       You can also specify the accelerator in the insertItem() function. You may prefer to use
       QAction to associate accelerators with menu items.

       See also accel(), insertItem(), QAccel, and QAction.

       Example: menu/menu.cpp.

void QPopupMenu::setActiveItem ( int i ) [virtual]
       Sets the currently active item to index i and repaints as necessary.

void QPopupMenu::setCheckable ( bool ) [virtual]
       Sets whether the display of check marks on menu items is enabled. See the "checkable"
       property for details.

void QMenuData::setItemChecked ( int id, bool check )
       If check is TRUE, checks the menu item with id id; otherwise unchecks the menu item with
       id id. Calls QPopupMenu::setCheckable( TRUE ) if necessary.

       See also isItemChecked().

       Examples:

void QMenuData::setItemEnabled ( int id, bool enable )
       If enable is TRUE, enables the menu item with identifier id; otherwise disables the menu
       item with identifier id.

       See also isItemEnabled().

       Examples:

bool QMenuData::setItemParameter ( int id, int param )
       Sets the parameter of the activation signal of item id to param.

       If any receiver takes an integer parameter, this value is passed.

       See also connectItem(), disconnectItem(), and itemParameter().

       Example: mdi/application.cpp.

void QMenuData::setItemVisible ( int id, bool visible )
       If visible is TRUE, shows the menu item with id id; otherwise hides the menu item with id
       id.

       See also isItemVisible() and isItemEnabled().

void QMenuData::setWhatsThis ( int id, const QString & text )
       Sets text as What's This help for the menu item with identifier id.

       See also whatsThis().

       Examples:

QString QMenuData::text ( int id ) const
       Returns the text that has been set for menu item id, or QString::null if no text has been
       set.

       See also changeItem(), pixmap(), and iconSet().

       Examples:

void QPopupMenu::updateItem ( int id ) [virtual]
       Updates the item with identity id.

       Reimplemented from QMenuData.

QString QMenuData::whatsThis ( int id ) const
       Returns the What's This help text for the item with identifier id or QString::null if no
       text has yet been defined.

       See also setWhatsThis().

   Property Documentation
bool checkable
       This property holds whether the display of check marks on menu items is enabled.

       When TRUE, the display of check marks on menu items is enabled. Checking is always enabled
       when in Windows-style.

       See also QMenuData::setItemChecked().

       Set this property's value with setCheckable() and get this property's value with
       isCheckable().

SEE ALSO
       http://doc.trolltech.com/qpopupmenu.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2001 Trolltech AS, http://www.trolltech.com.  See the license file included
       in the distribution for a complete license statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to help you. Thank you.

       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.

       If you find errors in this manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page (qpopupmenu.3qt) and the Qt version (3.1.1).

Trolltech AS				 9 December 2002			  QPopupMenu(3qt)


All times are GMT -4. The time now is 10:06 AM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
×
UNIX.COM Login
Username:
Password:  
Show Password