Q3ListBoxItem Class ReferenceThe Q3ListBoxItem class is the base class of all list box items. Далее... #include <Q3ListBoxItem> Данный класс является частью библиотеки поддержки Qt 3. Он предоставлен для поддержки ранее написанного кода. Мы настоятельно не рекомендуем использовать этот класс в новом коде. Для получения дополнительной информации смотрите Портирование на Qt 4. Inherited by: Q3ListBoxPixmap and Q3ListBoxText. Открытые функции
Защищенные функции
Подробное описаниеThe Q3ListBoxItem 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 Q3ListBox you must inherit this class and reimplement paint(), height() and width(). See also Q3ListBox. Описание функций-членовQ3ListBoxItem::Q3ListBoxItem ( Q3ListBox * listbox = 0 )Constructs an empty list box item in the list box listbox. Q3ListBoxItem::Q3ListBoxItem ( Q3ListBox * listbox, Q3ListBoxItem * 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. Q3ListBoxItem::~Q3ListBoxItem () [virtual]Destroys the list box item. bool Q3ListBoxItem::current () constUse isCurrent() instead. Returns true if isCurrent() returns true. int Q3ListBoxItem::height ( const Q3ListBox * 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 QApplication::globalStrut()'s height. bool Q3ListBoxItem::isCurrent () constReturns true if the item is the current item; otherwise returns false. See also Q3ListBox::currentItem(), Q3ListBox::item(), and isSelected(). bool Q3ListBoxItem::isSelectable () constReturns true if this item is selectable (the default); otherwise returns false. See also setSelectable(). bool Q3ListBoxItem::isSelected () constReturns true if the item is selected; otherwise returns false. See also Q3ListBox::isSelected() and isCurrent(). Q3ListBox * Q3ListBoxItem::listBox () constReturns a pointer to the list box containing this item. Q3ListBoxItem * Q3ListBoxItem::next () constReturns the item that comes after this in the list box. If this is the last item, 0 is returned. See also prev(). void Q3ListBoxItem::paint ( QPainter * p ) [pure virtual protected]Implement this function to draw your item. The painter, p, is already open for painting. See also height() and width(). const QPixmap * Q3ListBoxItem::pixmap () const [virtual]Returns the pixmap associated with the item, or 0 if there isn't one. The default implementation returns 0. Q3ListBoxItem * Q3ListBoxItem::prev () constReturns the item which comes before this in the list box. If this is the first item, 0 is returned. Смотрите также next(). int Q3ListBoxItem::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 Q3ListBoxItem::selected () constВместо неё используйте isSelected(). Returns true if isSelected() returns true. void Q3ListBoxItem::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 isSelected() and paint(). void Q3ListBoxItem::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 Q3ListBoxItem::setText ( const QString & text ) [virtual protected]Sets the text of the Q3ListBoxItem to text. This text is also used for sorting. The text is not shown unless explicitly drawn in paint(). Смотрите также text(). QString Q3ListBoxItem::text () const [virtual]Returns the text of the item. This text is also used for sorting. Смотрите также setText(). int Q3ListBoxItem::width ( const Q3ListBox * 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 QApplication::globalStrut()'s width. |
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