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# QGraphicsGridLayout Class Reference
[QtGui module]

The QGraphicsGridLayout class provides a grid layout for managing widgets in Graphics View. More...

Inherits QGraphicsLayout.

### Methods

- __init__ (self, QGraphicsLayoutItem parent = None)
- addItem (self, QGraphicsLayoutItem item, int row, int column, int rowSpan, int columnSpan, Qt.Alignment alignment = 0)
- addItem (self, QGraphicsLayoutItem aitem, int arow, int acolumn, Qt.Alignment aalignment = 0)
- Qt.Alignment alignment (self, QGraphicsLayoutItem item)
- Qt.Alignment columnAlignment (self, int column)
- int columnCount (self)
- float columnMaximumWidth (self, int column)
- float columnMinimumWidth (self, int column)
- float columnPreferredWidth (self, int column)
- float columnSpacing (self, int column)
- int columnStretchFactor (self, int column)
- int count (self)
- float horizontalSpacing (self)
- invalidate (self)
- QGraphicsLayoutItem itemAt (self, int row, int column)
- QGraphicsLayoutItem itemAt (self, int index)
- removeAt (self, int index)
- Qt.Alignment rowAlignment (self, int row)
- int rowCount (self)
- float rowMaximumHeight (self, int row)
- float rowMinimumHeight (self, int row)
- float rowPreferredHeight (self, int row)
- float rowSpacing (self, int row)
- int rowStretchFactor (self, int row)
- setAlignment (self, QGraphicsLayoutItem item, Qt.Alignment alignment)
- setColumnAlignment (self, int column, Qt.Alignment alignment)
- setColumnFixedWidth (self, int column, float width)
- setColumnMaximumWidth (self, int column, float width)
- setColumnMinimumWidth (self, int column, float width)
- setColumnPreferredWidth (self, int column, float width)
- setColumnSpacing (self, int column, float spacing)
- setColumnStretchFactor (self, int column, int stretch)
- setGeometry (self, QRectF rect)
- setHorizontalSpacing (self, float spacing)
- setRowAlignment (self, int row, Qt.Alignment alignment)
- setRowFixedHeight (self, int row, float height)
- setRowMaximumHeight (self, int row, float height)
- setRowMinimumHeight (self, int row, float height)
- setRowPreferredHeight (self, int row, float height)
- setRowSpacing (self, int row, float spacing)
- setRowStretchFactor (self, int row, int stretch)
- setSpacing (self, float spacing)
- setVerticalSpacing (self, float spacing)
- QSizeF sizeHint (self, Qt.SizeHint which, QSizeF constraint = QSizeF())
- float verticalSpacing (self)

## Detailed Description

The QGraphicsGridLayout class provides a grid layout for managing widgets in Graphics View.

The most common way to use QGraphicsGridLayout is to construct an object on the heap with no parent, add widgets and layouts by calling addItem(), and finally assign the layout to a widget by calling QGraphicsWidget.setLayout(). QGraphicsGridLayout automatically computes the dimensions of the grid as you add items.

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

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

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

See also QGraphicsLinearLayout and QGraphicsWidget.

## Method Documentation

### QGraphicsGridLayout.__init__ (self, QGraphicsLayoutItem parent = None)

The parent argument, if not None, causes self to be owned by Qt instead of PyQt.

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

### QGraphicsGridLayout.addItem (self, QGraphicsLayoutItem item, int row, int column, int rowSpan, int columnSpan, Qt.Alignment alignment = 0)

The item argument has it's ownership transferred to Qt.

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

### QGraphicsGridLayout.addItem (self, QGraphicsLayoutItem aitem, int arow, int acolumn, Qt.Alignment aalignment = 0)

The aitem argument, if not None, causes self to be owned by Qt instead of PyQt.

This is an overloaded member function, provided for convenience.

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

### Qt.Alignment QGraphicsGridLayout.alignment (self, QGraphicsLayoutItem item)

Returns the alignment for item.

See also setAlignment().

### Qt.Alignment QGraphicsGridLayout.columnAlignment (self, int column)

Returns the alignment for column.

See also setColumnAlignment().

### int QGraphicsGridLayout.columnCount (self)

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).

### float QGraphicsGridLayout.columnMaximumWidth (self, int column)

Returns the maximum width for column.

See also setColumnMaximumWidth().

### float QGraphicsGridLayout.columnMinimumWidth (self, int column)

Returns the minimum width for column.

See also setColumnMinimumWidth().

### float QGraphicsGridLayout.columnPreferredWidth (self, int column)

Returns the preferred width for column.

See also setColumnPreferredWidth().

### float QGraphicsGridLayout.columnSpacing (self, int column)

Returns the column spacing for column.

See also setColumnSpacing().

### int QGraphicsGridLayout.columnStretchFactor (self, int column)

Returns the stretch factor for column.

See also setColumnStretchFactor().

### int QGraphicsGridLayout.count (self)

Returns the number of layout items in this grid layout.

Reimplemented from QGraphicsLayout.

### float QGraphicsGridLayout.horizontalSpacing (self)

Returns the default horizontal spacing for the grid layout.

See also setHorizontalSpacing().

### QGraphicsGridLayout.invalidate (self)

### QGraphicsLayoutItem QGraphicsGridLayout.itemAt (self, int row, int column)

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

### QGraphicsLayoutItem QGraphicsGridLayout.itemAt (self, int index)

This is an overloaded member function, provided for convenience.

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

Reimplemented from QGraphicsLayout.

### QGraphicsGridLayout.removeAt (self, int index)

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

Reimplemented from QGraphicsLayout.

See also addItem().

### Qt.Alignment QGraphicsGridLayout.rowAlignment (self, int row)

Returns the alignment of row.

See also setRowAlignment().

### int QGraphicsGridLayout.rowCount (self)

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).

### float QGraphicsGridLayout.rowMaximumHeight (self, int row)

Returns the maximum height for row, row.

See also setRowMaximumHeight().

### float QGraphicsGridLayout.rowMinimumHeight (self, int row)

Returns the minimum height for row, row.

See also setRowMinimumHeight().

### float QGraphicsGridLayout.rowPreferredHeight (self, int row)

Returns the preferred height for row, row.

See also setRowPreferredHeight().

### float QGraphicsGridLayout.rowSpacing (self, int row)

Returns the row spacing for row.

See also setRowSpacing().

### int QGraphicsGridLayout.rowStretchFactor (self, int row)

Returns the stretch factor for row.

See also setRowStretchFactor().

### QGraphicsGridLayout.setAlignment (self, QGraphicsLayoutItem item, Qt.Alignment alignment)

Sets the alignment for item to alignment.

See also alignment().

### QGraphicsGridLayout.setColumnAlignment (self, int column, Qt.Alignment alignment)

Sets the alignment for column to alignment.

See also columnAlignment().

### QGraphicsGridLayout.setColumnFixedWidth (self, int column, float width)

Sets the fixed width of column to width.

### QGraphicsGridLayout.setColumnMaximumWidth (self, int column, float width)

Sets the maximum width of column to width.

See also columnMaximumWidth().

### QGraphicsGridLayout.setColumnMinimumWidth (self, int column, float width)

Sets the minimum width for column to width.

See also columnMinimumWidth().

### QGraphicsGridLayout.setColumnPreferredWidth (self, int column, float width)

Sets the preferred width for column to width.

See also columnPreferredWidth().

### QGraphicsGridLayout.setColumnSpacing (self, int column, float spacing)

Sets the spacing for column to spacing.

See also columnSpacing().

### QGraphicsGridLayout.setColumnStretchFactor (self, int column, int stretch)

Sets the stretch factor for column to stretch.

See also columnStretchFactor().

### QGraphicsGridLayout.setGeometry (self, QRectF rect)

Sets the bounding geometry of the grid layout to rect.

Reimplemented from QGraphicsLayoutItem.

### QGraphicsGridLayout.setHorizontalSpacing (self, float spacing)

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

See also horizontalSpacing().

### QGraphicsGridLayout.setRowAlignment (self, int row, Qt.Alignment alignment)

Sets the alignment of row to alignment.

See also rowAlignment().

### QGraphicsGridLayout.setRowFixedHeight (self, int row, float height)

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

### QGraphicsGridLayout.setRowMaximumHeight (self, int row, float height)

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

See also rowMaximumHeight().

### QGraphicsGridLayout.setRowMinimumHeight (self, int row, float height)

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

See also rowMinimumHeight().

### QGraphicsGridLayout.setRowPreferredHeight (self, int row, float height)

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

See also rowPreferredHeight().

### QGraphicsGridLayout.setRowSpacing (self, int row, float spacing)

Sets the spacing for row to spacing.

See also rowSpacing().

### QGraphicsGridLayout.setRowStretchFactor (self, int row, int stretch)

Sets the stretch factor for row to stretch.

See also rowStretchFactor().

### QGraphicsGridLayout.setSpacing (self, float spacing)

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

See also rowSpacing() and columnSpacing().

### QGraphicsGridLayout.setVerticalSpacing (self, float spacing)

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

See also verticalSpacing().

### QSizeF QGraphicsGridLayout.sizeHint (self, Qt.SizeHint which, QSizeF constraint = QSizeF())

### float QGraphicsGridLayout.verticalSpacing (self)

Returns the default vertical spacing for the grid layout.

See also setVerticalSpacing().