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The Java Developers Almanac 1.4 |
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e624. Getting the Number of Rows and Columns of Cells in a GridBagLayoutThe number of rows and columns in aGridBagLayout automatically
grows as needed when components are added. The current number of
rows and columns can be determined by calling
getLayoutDimensions(). However, it won't return the correct
values until the components have been laid out at least once before
the call to getLayoutDimensions(). Unless you can be sure the
components have been laid out at least once, you should explicitly
call layoutContainer() to force a layout of the components.
GridBagLayout gbl = new GridBagLayout();
container.setLayout(gbl);
// Add components to container and gbl
// Force the layout of components before calling getLayoutDimensions()
gbl.layoutContainer(container);
// Get the dimensions
int[][] dim = gbl.getLayoutDimensions();
int cols = dim[0].length;
int rows = dim[1].length;
e623. Setting the Location of a Component in a GridBagLayout e625. Making a GridBagLayout Fill the Container e626. Setting the Stretchyness of Rows and Columns in a GridBagLayout Using Layout Weights e627. Setting the Stretchyness of Columns and Rows in a GridBagLayout Using Component Weights e628. Setting the Stretchyness of a Component Within the Cell of a GridBagLayout Using Fill e629. Setting the Location of a Component Within the Cell of a GridBagLayout Using Anchors e630. Setting the Space around a Component Within the Cell of the GridBagLayout Using Insets e631. Adjusting the Size of a Component in a GridBadLayout Using Internal Padding e632. Setting a Row or Column of a GridBadLayout to a Particular Size e633. Setting Gap Sizes in a GridBadLayout
© 2002 Addison-Wesley. |