QCustomMenuItem(3qt)QCustomMenuItem(3qt)NAME
QCustomMenuItem - Abstract base class for custom menu items in popup
menus
SYNOPSIS
#include <qmenudata.h>
Inherits Qt.
Public Members
QCustomMenuItem ()
virtual ~QCustomMenuItem ()
virtual bool fullSpan () const
virtual bool isSeparator () const
virtual void setFont ( const QFont & font )
virtual void paint ( QPainter * p, const QColorGroup & cg, bool act,
bool enabled, int x, int y, int w, int h ) = 0
virtual QSize sizeHint () = 0
DESCRIPTION
The QCustomMenuItem class is an abstract base class for custom menu
items in popup menus.
A custom menu item is a menu item that is defined by two pure virtual
functions, paint() and sizeHint(). The size hint tells the menu how
much space it needs to reserve for this item, and paint is called
whenever the item needs painting.
This simple mechanism allows you to create all kinds of application
specific menu items. Examples are items showing different fonts in a
word processor or menus that allow the selection of drawing utilities
in a vector drawing program.
A custom item is inserted into a popup menu with
QPopupMenu::insertItem().
By default, a custom item can also have an icon and a keyboard
accelerator. You can reimplement fullSpan() to return TRUE if you want
the item to span the entire popup menu width. This is particularly
useful for labels.
If you want the custom item to be treated just as a separator,
reimplement isSeparator() to return TRUE.
Note that you can insert pixmaps or bitmaps as items into a popup menu
without needing to create a QCustomMenuItem. However, custom menu items
offer more flexibility, and -- especially important with Windows style
-- provide the possibility of drawing the item with a different color
when it is highlighted.
menu/menu.cpp shows a simple example how custom menu items can be used.
Note: the current implementation of QCustomMenuItem will not recognize
shortcut keys that are from text with ampersands. Normal accelerators
work though.
[Image Omitted]
See also QMenuData, QPopupMenu, and Miscellaneous Classes.
MEMBER FUNCTION DOCUMENTATIONQCustomMenuItem::QCustomMenuItem ()
Constructs a QCustomMenuItem
QCustomMenuItem::~QCustomMenuItem () [virtual]
Destroys a QCustomMenuItem
bool QCustomMenuItem::fullSpan () const [virtual]
Returns TRUE if this item wants to span the entire popup menu width;
otherwise returns FALSE. The default is FALSE, meaning that the menu
may show an icon and an accelerator key for this item as well.
bool QCustomMenuItem::isSeparator () const [virtual]
Returns TRUE if this item is just a separator; otherwise returns FALSE.
void QCustomMenuItem::paint ( QPainter * p, const QColorGroup & cg, bool act,
bool enabled, int x, int y, int w, int h ) [pure virtual]
Paints this item. When this function is invoked, the painter p is set
to a font and foreground color suitable for a menu item text using
color group cg. The item is active if act is TRUE and enabled if
enabled is TRUE. The geometry values x, y, w and h specify where to
draw the item.
Do not draw any background, this has already been done by the popup
menu according to the current GUI style.
void QCustomMenuItem::setFont ( const QFont & font ) [virtual]
Sets the font of the custom menu item to font.
This function is called whenever the font in the popup menu changes.
For menu items that show their own individual font entry, you want to
ignore this.
QSize QCustomMenuItem::sizeHint () [pure virtual]
Returns the item's size hint.
SEE ALSO
http://doc.trolltech.com/qcustommenuitem.html
http://www.trolltech.com/faq/tech.html
COPYRIGHT
Copyright 1992-2007 Trolltech ASA, 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
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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
(qcustommenuitem.3qt) and the Qt version (3.3.8).
Trolltech AS 2 February 2007 QCustomMenuItem(3qt)