Grabbing Excess Space: grabExcessHorizontalSpace and grabExcessVerticalSpace : GridLayout « SWT « Java Tutorial






  1. Grow as their parent composite grows.
  2. Shrink as their parent composite shrinks.
  3. Usually, you enable these properties with controls such as Text, List, Tree, Table, or Canvas.
  4. The default value of each of the two properties is false.
Grabbing Excess Space: grabExcessHorizontalSpace and grabExcessVerticalSpace
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;

public class GridLayoutGrabExpressionSpace {
  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);

    GridLayout gridLayout = new GridLayout();
    gridLayout.numColumns = 2;
    gridLayout.makeColumnsEqualWidth = true;
    
    shell.setLayout(gridLayout);

    Button button1 = new Button(shell, SWT.PUSH);
    button1.setText("button1"); // Default alignment

    List list = new List(shell, SWT.BORDER);
    list.add("item 1");
    list.add("item 2");
    list.add("item 3");
    GridData gridData = new GridData();
    gridData.grabExcessHorizontalSpace = true;
    gridData.horizontalAlignment = GridData.FILL;
    list.setLayoutData(gridData);


    Button button2 = new Button(shell, SWT.PUSH);
    button2.setText("button #2");
    button2.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_END));

    Button button3 = new Button(shell, SWT.PUSH);
    button3.setText("3");
    
    
    shell.setSize(450, 400);
    shell.open();

    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}








17.96.GridLayout
17.96.1.Using GridLayout
17.96.2.Use GridLayout to layout a dialogUse GridLayout to layout a dialog
17.96.3.Using GridLayout with all default valuesUsing GridLayout with all default values
17.96.4.GridLayout: horizontalSpacing, verticalSpacingGridLayout: horizontalSpacing, verticalSpacing
17.96.5.GridLayout: marginHeight, marginWidthGridLayout: marginHeight, marginWidth
17.96.6.GridLayout: numColumnsGridLayout: numColumns
17.96.7.GridLayout: makeColumnsEqualWidthGridLayout: makeColumnsEqualWidth
17.96.8.Using GridData ObjectsUsing GridData Objects
17.96.9.The verticalAlignment specifies the vertical positioning.The verticalAlignment specifies the vertical positioning.
17.96.10.Horizontal IndentationHorizontal Indentation
17.96.11.Horizontal Span and Vertical SpanHorizontal Span and Vertical Span
17.96.12.Grabbing Excess Space: grabExcessHorizontalSpace and grabExcessVerticalSpaceGrabbing Excess Space: grabExcessHorizontalSpace and grabExcessVerticalSpace
17.96.13.Enable more than one control to grab excess vertical spaceEnable more than one control to grab excess vertical space
17.96.14.Make more than one control to grab excess space in the same directionMake more than one control to grab excess space in the same direction
17.96.15.Size Hints: widthHint and heightHintSize Hints: widthHint and heightHint
17.96.16.A Sample GUI Using GridLayoutsA Sample GUI Using GridLayouts
17.96.17.GridLayout Column 2GridLayout Column 2
17.96.18.GridLayout 2x2GridLayout 2x2
17.96.19.GridLayout ComplexGridLayout Complex
17.96.20.GridLayout Fill BothGridLayout Fill Both
17.96.21.GridLayout: HORIZONTAL ALIGN Begin FillGridLayout: HORIZONTAL ALIGN Begin Fill
17.96.22.GridLayout: insert widgets into a grid layoutGridLayout: insert widgets into a grid layout
17.96.23.GridLayout snippet: align widgets in a GridLayoutGridLayout snippet: align widgets in a GridLayout
17.96.24.Exclude a widget from a GridLayoutExclude a widget from a GridLayout