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< title > TQCustomMenuItem Class< / title >
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< td align = "right" valign = "center" > < img src = "logo32.png" align = "right" width = "64" height = "32" border = "0" > < / td > < / tr > < / table > < h1 align = center > TQCustomMenuItem Class Reference< / h1 >
< p > The TQCustomMenuItem class is an abstract base class for custom menu items in popup menus.
< a href = "#details" > More...< / a >
< p > < tt > #include < < a href = "qmenudata-h.html" > ntqmenudata.h< / a > > < / tt >
< p > Inherits < a href = "ntqt.html" > TQt< / a > .
< p > < a href = "qcustommenuitem-members.html" > List of all member functions.< / a >
< h2 > Public Members< / h2 >
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< li class = fn > < a href = "#TQCustomMenuItem" > < b > TQCustomMenuItem< / b > < / a > ()< / li >
< li class = fn > virtual < a href = "#~TQCustomMenuItem" > < b > ~TQCustomMenuItem< / b > < / a > ()< / li >
< li class = fn > virtual bool < a href = "#fullSpan" > < b > fullSpan< / b > < / a > () const< / li >
< li class = fn > virtual bool < a href = "#isSeparator" > < b > isSeparator< / b > < / a > () const< / li >
< li class = fn > virtual void < a href = "#setFont" > < b > setFont< / b > < / a > ( const TQFont & font )< / li >
< li class = fn > virtual void < a href = "#paint" > < b > paint< / b > < / a > ( TQPainter * p, const TQColorGroup & cg, bool act, bool enabled, int x, int y, int w, int h ) = 0< / li >
< li class = fn > virtual TQSize < a href = "#sizeHint" > < b > sizeHint< / b > < / a > () = 0< / li >
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< hr > < a name = "details" > < / a > < h2 > Detailed Description< / h2 >
The TQCustomMenuItem class is an abstract base class for custom menu items in popup menus.
< p >
< p > A custom menu item is a menu item that is defined by two pure
virtual functions, < a href = "#paint" > paint< / a > () and < a href = "#sizeHint" > sizeHint< / a > (). 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.
< p > 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.
< p > A custom item is inserted into a popup menu with
< a href = "ntqmenudata.html#insertItem" > TQPopupMenu::insertItem< / a > ().
< p > By default, a custom item can also have an icon and a keyboard
accelerator. You can reimplement < a href = "#fullSpan" > fullSpan< / a > () to return TRUE if you
want the item to span the entire popup menu width. This is
particularly useful for labels.
< p > If you want the custom item to be treated just as a separator,
reimplement < a href = "#isSeparator" > isSeparator< / a > () to return TRUE.
< p > Note that you can insert pixmaps or bitmaps as items into a popup
menu without needing to create a TQCustomMenuItem. 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.
< p > < a href = "menu-example.html" > menu/menu.cpp< / a > shows a simple
example how custom menu items can be used.
< p > Note: the current implementation of TQCustomMenuItem will not
recognize shortcut keys that are from text with ampersands. Normal
accelerators work though.
< p > < img src = qpopmenu-fancy.png >
< p > < p > See also < a href = "ntqmenudata.html" > TQMenuData< / a > , < a href = "ntqpopupmenu.html" > TQPopupMenu< / a > , and < a href = "misc.html" > Miscellaneous Classes< / a > .
< hr > < h2 > Member Function Documentation< / h2 >
< h3 class = fn > < a name = "TQCustomMenuItem" > < / a > TQCustomMenuItem::TQCustomMenuItem ()
< / h3 >
Constructs a TQCustomMenuItem
< h3 class = fn > < a name = "~TQCustomMenuItem" > < / a > TQCustomMenuItem::~TQCustomMenuItem ()< tt > [virtual]< / tt >
< / h3 >
Destroys a TQCustomMenuItem
< h3 class = fn > bool < a name = "fullSpan" > < / a > TQCustomMenuItem::fullSpan () const< tt > [virtual]< / tt >
< / h3 >
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.
< h3 class = fn > bool < a name = "isSeparator" > < / a > TQCustomMenuItem::isSeparator () const< tt > [virtual]< / tt >
< / h3 >
Returns TRUE if this item is just a separator; otherwise returns
FALSE.
< h3 class = fn > void < a name = "paint" > < / a > TQCustomMenuItem::paint ( < a href = "ntqpainter.html" > TQPainter< / a > * p, const < a href = "qcolorgroup.html" > TQColorGroup< / a > & cg, bool act, bool enabled, int x, int y, int w, int h )< tt > [pure virtual]< / tt >
< / h3 >
< p > Paints this item. When this function is invoked, the painter < em > p< / em >
is set to a font and foreground color suitable for a menu item
text using color group < em > cg< / em > . The item is active if < em > act< / em > is TRUE
and enabled if < em > enabled< / em > is TRUE. The geometry values < em > x< / em > , < em > y< / em > ,
< em > w< / em > and < em > h< / em > specify where to draw the item.
< p > Do not draw any background, this has already been done by the
popup menu according to the current GUI style.
< h3 class = fn > void < a name = "setFont" > < / a > TQCustomMenuItem::setFont ( const < a href = "ntqfont.html" > TQFont< / a > & font )< tt > [virtual]< / tt >
< / h3 >
Sets the font of the custom menu item to < em > font< / em > .
< p > 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.
< h3 class = fn > < a href = "ntqsize.html" > TQSize< / a > < a name = "sizeHint" > < / a > TQCustomMenuItem::sizeHint ()< tt > [pure virtual]< / tt >
< / h3 >
< p > Returns the item's size hint.
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