TQListBoxItem Class Reference
The TQListBoxItem class is the base class of all list box items.
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#include <ntqlistbox.h>
Inherited by TQListBoxText and TQListBoxPixmap.
List of all member functions.
Public Members
Protected Members
Detailed Description
The TQListBoxItem class is the base class of all list box items.
This class is an abstract base class used for all list box items.
If you need to insert customized items into a TQListBox you must
inherit this class and reimplement paint(), height() and width().
See also TQListBox.
Member Function Documentation
TQListBoxItem::TQListBoxItem ( TQListBox * listbox = 0 )
Constructs an empty list box item in the list box listbox.
TQListBoxItem::TQListBoxItem ( TQListBox * listbox, TQListBoxItem * after )
Constructs an empty list box item in the list box listbox and
inserts it after the item after or at the beginning if after
is 0.
TQListBoxItem::~TQListBoxItem () [virtual]
Destroys the list box item.
bool TQListBoxItem::current () const
This function is obsolete. It is provided to keep old source working. We strongly advise against using it in new code.
int TQListBoxItem::height ( const TQListBox * lb ) const [virtual]
Implement this function to return the height of your item. The lb parameter is the same as listBox() and is provided for
convenience and compatibility.
The default implementation returns
TQApplication::globalStrut()'s height.
See also paint() and width().
Reimplemented in TQListBoxText and TQListBoxPixmap.
bool TQListBoxItem::isCurrent () const
Returns TRUE if the item is the current item; otherwise returns
FALSE.
See also TQListBox::currentItem, TQListBox::item(), and isSelected().
bool TQListBoxItem::isSelectable () const
Returns TRUE if this item is selectable (the default); otherwise
returns FALSE.
See also setSelectable().
bool TQListBoxItem::isSelected () const
Returns TRUE if the item is selected; otherwise returns FALSE.
See also TQListBox::isSelected() and isCurrent().
Example: listboxcombo/listboxcombo.cpp.
TQListBox * TQListBoxItem::listBox () const
Returns a pointer to the list box containing this item.
TQListBoxItem * TQListBoxItem::next () const
Returns the item that comes after this in the list box. If this is
the last item, 0 is returned.
See also prev().
void TQListBoxItem::paint ( TQPainter * p ) [pure virtual protected]
Implement this function to draw your item. The painter, p, is
already open for painting.
See also height() and width().
Example: listboxcombo/listboxcombo.cpp.
Reimplemented in TQListBoxText and TQListBoxPixmap.
const TQPixmap * TQListBoxItem::pixmap () const [virtual]
Returns the pixmap associated with the item, or 0 if there isn't
one.
The default implementation returns 0.
Example: listboxcombo/listboxcombo.cpp.
Reimplemented in TQListBoxPixmap.
TQListBoxItem * TQListBoxItem::prev () const
Returns the item which comes before this in the list box. If this
is the first item, 0 is returned.
See also next().
int TQListBoxItem::rtti () const [virtual]
Returns 0.
Make your derived classes return their own values for rtti(), and
you can distinguish between listbox items. You should use values
greater than 1000 preferably a large random number, to allow for
extensions to this class.
bool TQListBoxItem::selected () const
This function is obsolete. It is provided to keep old source working. We strongly advise against using it in new code.
void TQListBoxItem::setCustomHighlighting ( bool b ) [protected]
Defines whether the list box item is responsible for drawing
itself in a highlighted state when being selected.
If b is FALSE (the default), the list box will draw some
default highlight indicator before calling paint().
See also selected() and paint().
void TQListBoxItem::setSelectable ( bool b )
If b is TRUE (the default) then this item can be selected by
the user; otherwise this item cannot be selected by the user.
See also isSelectable().
void TQListBoxItem::setText ( const TQString & text ) [virtual protected]
Sets the text of the TQListBoxItem to text. This text is also
used for sorting. The text is not shown unless explicitly drawn in
paint().
See also text().
TQString TQListBoxItem::text () const [virtual]
Returns the text of the item. This text is also used for sorting.
See also setText().
Example: listboxcombo/listboxcombo.cpp.
int TQListBoxItem::width ( const TQListBox * lb ) const [virtual]
Reimplement this function to return the width of your item. The lb parameter is the same as listBox() and is provided for
convenience and compatibility.
The default implementation returns
TQApplication::globalStrut()'s width.
See also paint() and height().
Reimplemented in TQListBoxText and TQListBoxPixmap.
This file is part of the TQt toolkit.
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