QGraphicsGridLayout Class

  QGraphicsScene scene;
  QGraphicsWidget *textEdit = scene.addWidget(new QTextEdit);
  QGraphicsWidget *pushButton = scene.addWidget(new QPushButton);

  QGraphicsGridLayout *layout = new QGraphicsGridLayout;
  layout->addItem(textEdit, 0, 0);
  layout->addItem(pushButton, 0, 1);

  QGraphicsWidget *form = new QGraphicsWidget;
  form->setLayout(layout);
  scene.addItem(form);

成员函数

QGraphicsGridLayout::QGraphicsGridLayout(QGraphicsLayoutItem *parent = Q_NULLPTR)

Constructs a QGraphicsGridLayout instance. parent is passed to QGraphicsLayout's constructor.

[virtual] QGraphicsGridLayout::~QGraphicsGridLayout()

Destroys the QGraphicsGridLayout object.

void QGraphicsGridLayout::addItem(QGraphicsLayoutItem *item, int row, int column, int rowSpan, int columnSpan, Qt::Alignment alignment = Qt::Alignment())

Adds item to the grid on row and column. You can specify a rowSpan and columnSpan and an optional alignment.

void QGraphicsGridLayout::addItem(QGraphicsLayoutItem *item, int row, int column, Qt::Alignment alignment = Qt::Alignment())

Adds item to the grid on row and column. You can specify an optional alignment for item.

Qt::Alignment QGraphicsGridLayout::alignment(QGraphicsLayoutItem *item) const

Returns the alignment for item.

参见 setAlignment().

Qt::Alignment QGraphicsGridLayout::columnAlignment(int column) const

Returns the alignment for column.

参见 setColumnAlignment().

int QGraphicsGridLayout::columnCount() const

Returns the number of columns in the grid layout. This is always one more than the index of the last column that is occupied by a layout item (empty columns are counted except for those at the end).

qreal QGraphicsGridLayout::columnMaximumWidth(int column) const

Returns the maximum width for column.

参见 setColumnMaximumWidth().

qreal QGraphicsGridLayout::columnMinimumWidth(int column) const

Returns the minimum width for column.

参见 setColumnMinimumWidth().

qreal QGraphicsGridLayout::columnPreferredWidth(int column) const

Returns the preferred width for column.

参见 setColumnPreferredWidth().

qreal QGraphicsGridLayout::columnSpacing(int column) const

Returns the column spacing for column.

参见 setColumnSpacing().

int QGraphicsGridLayout::columnStretchFactor(int column) const

Returns the stretch factor for column.

参见 setColumnStretchFactor().

[virtual] int QGraphicsGridLayout::count() const

重新实现 QGraphicsLayout::count().

Returns the number of layout items in this grid layout.

qreal QGraphicsGridLayout::horizontalSpacing() const

Returns the default horizontal spacing for the grid layout.

参见 setHorizontalSpacing().

[virtual] void QGraphicsGridLayout::invalidate()

重新实现 QGraphicsLayout::invalidate().

QGraphicsLayoutItem *QGraphicsGridLayout::itemAt(int row, int column) const

Returns a pointer to the layout item at (row, column).

[virtual] QGraphicsLayoutItem *QGraphicsGridLayout::itemAt(int index) const

重新实现 QGraphicsLayout::itemAt().

Returns the layout item at index, or 0 if there is no layout item at this index.

[virtual] void QGraphicsGridLayout::removeAt(int index)

重新实现 QGraphicsLayout::removeAt().

Removes the layout item at index without destroying it. Ownership of the item is transferred to the caller.

参见 addItem().

void QGraphicsGridLayout::removeItem(QGraphicsLayoutItem *item)

Removes the layout item item without destroying it. Ownership of the item is transferred to the caller.

参见 addItem().

Qt::Alignment QGraphicsGridLayout::rowAlignment(int row) const

Returns the alignment of row.

参见 setRowAlignment().

int QGraphicsGridLayout::rowCount() const

Returns the number of rows in the grid layout. This is always one more than the index of the last row that is occupied by a layout item (empty rows are counted except for those at the end).

qreal QGraphicsGridLayout::rowMaximumHeight(int row) const

Returns the maximum height for row, row.

参见 setRowMaximumHeight().

qreal QGraphicsGridLayout::rowMinimumHeight(int row) const

Returns the minimum height for row, row.

参见 setRowMinimumHeight().

qreal QGraphicsGridLayout::rowPreferredHeight(int row) const

Returns the preferred height for row, row.

参见 setRowPreferredHeight().

qreal QGraphicsGridLayout::rowSpacing(int row) const

Returns the row spacing for row.

参见 setRowSpacing().

int QGraphicsGridLayout::rowStretchFactor(int row) const

Returns the stretch factor for row.

参见 setRowStretchFactor().

void QGraphicsGridLayout::setAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment)

Sets the alignment for item to alignment.

参见 alignment().

void QGraphicsGridLayout::setColumnAlignment(int column, Qt::Alignment alignment)

Sets the alignment for column to alignment.

参见 columnAlignment().

void QGraphicsGridLayout::setColumnFixedWidth(int column, qreal width)

Sets the fixed width of column to width.

void QGraphicsGridLayout::setColumnMaximumWidth(int column, qreal width)

Sets the maximum width of column to width.

参见 columnMaximumWidth().

void QGraphicsGridLayout::setColumnMinimumWidth(int column, qreal width)

Sets the minimum width for column to width.

参见 columnMinimumWidth().

void QGraphicsGridLayout::setColumnPreferredWidth(int column, qreal width)

Sets the preferred width for column to width.

参见 columnPreferredWidth().

void QGraphicsGridLayout::setColumnSpacing(int column, qreal spacing)

Sets the spacing for column to spacing.

参见 columnSpacing().

void QGraphicsGridLayout::setColumnStretchFactor(int column, int stretch)

Sets the stretch factor for column to stretch.

参见 columnStretchFactor().

[virtual] void QGraphicsGridLayout::setGeometry(const QRectF &rect)

重新实现 QGraphicsLayoutItem::setGeometry().

Sets the bounding geometry of the grid layout to rect.

void QGraphicsGridLayout::setHorizontalSpacing(qreal spacing)

Sets the default horizontal spacing for the grid layout to spacing.

参见 horizontalSpacing().

void QGraphicsGridLayout::setRowAlignment(int row, Qt::Alignment alignment)

Sets the alignment of row to alignment.

参见 rowAlignment().

void QGraphicsGridLayout::setRowFixedHeight(int row, qreal height)

Sets the fixed height for row, row, to height.

void QGraphicsGridLayout::setRowMaximumHeight(int row, qreal height)

Sets the maximum height for row, row, to height.

参见 rowMaximumHeight().

void QGraphicsGridLayout::setRowMinimumHeight(int row, qreal height)

Sets the minimum height for row, row, to height.

参见 rowMinimumHeight().

void QGraphicsGridLayout::setRowPreferredHeight(int row, qreal height)

Sets the preferred height for row, row, to height.

参见 rowPreferredHeight().

void QGraphicsGridLayout::setRowSpacing(int row, qreal spacing)

Sets the spacing for row to spacing.

参见 rowSpacing().

void QGraphicsGridLayout::setRowStretchFactor(int row, int stretch)

Sets the stretch factor for row to stretch.

参见 rowStretchFactor().

void QGraphicsGridLayout::setSpacing(qreal spacing)

Sets the grid layout's default spacing, both vertical and horizontal, to spacing.

参见 rowSpacing() and columnSpacing().

void QGraphicsGridLayout::setVerticalSpacing(qreal spacing)

Sets the default vertical spacing for the grid layout to spacing.

参见 verticalSpacing().

[virtual] QSizeF QGraphicsGridLayout::sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const

重新实现 QGraphicsLayoutItem::sizeHint().

qreal QGraphicsGridLayout::verticalSpacing() const

Returns the default vertical spacing for the grid layout.

参见 setVerticalSpacing().