Главная · Все пространства имен · Все классы · Основные классы · Классы по группам · Модули · Функции

QSpacerItem Class Reference
[модуль QtGui]

The QSpacerItem class provides blank space in a layout. Далее...

 #include <QSpacerItem>

Inherits QLayoutItem.

• Список всех членов, включая унаследованные

Открытые функции

• QSpacerItem ( int w, int h, QSizePolicy::Policy hPolicy = QSizePolicy::Minimum, QSizePolicy::Policy vPolicy = QSizePolicy::Minimum )
• void changeSize ( int w, int h, QSizePolicy::Policy hPolicy = QSizePolicy::Minimum, QSizePolicy::Policy vPolicy = QSizePolicy::Minimum )
• virtual bool isEmpty () const
• virtual QSpacerItem * spacerItem ()

• 17 открытых функций, унаследованных от QLayoutItem

Подробное описание

The QSpacerItem class provides blank space in a layout.

Normally, you don't need to use this class directly. Qt's built-in layout managers provide the following functions for manipulating empty space in layouts:

See also QLayout, QWidgetItem, and QLayoutItem::spacerItem().

Описание функций-членов

QSpacerItem::QSpacerItem ( int w, int h, QSizePolicy::Policy hPolicy = QSizePolicy::Minimum, QSizePolicy::Policy vPolicy = QSizePolicy::Minimum )

Constructs a spacer item with preferred width w, preferred height h, horizontal size policy hPolicy and vertical size policy vPolicy.

The default values provide a gap that is able to stretch if nothing else wants the space.

void QSpacerItem::changeSize ( int w, int h, QSizePolicy::Policy hPolicy = QSizePolicy::Minimum, QSizePolicy::Policy vPolicy = QSizePolicy::Minimum )

Changes this spacer item to have preferred width w, preferred height h, horizontal size policy hPolicy and vertical size policy vPolicy.

The default values provide a gap that is able to stretch if nothing else wants the space.

Note that if changeSize() is called after the spacer item has been added to a layout, it is necessary to invalidate the layout in order for the spacer item's new size to take effect.

See also QSpacerItem::invalidate().

bool QSpacerItem::isEmpty () const   [virtual]

Returns true.

Переопределено из QLayoutItem.

QSpacerItem * QSpacerItem::spacerItem ()   [virtual]

Returns a pointer to this object.

Переопределено из QLayoutItem.