CODEWITHSUNDEEP
javalayoutswt
Suzan Cioc
Suzan Cioc

Reputation: 30097

How to make some columns of GridLayout grow in SWT?

How to make some columns of GridLayout grow in SWT?

I put 3 controls into grid layout and found they are not grow with window, despite the fact I set FILL style.

enter image description here

The code:

public class GridLayout01 {


    public static void main(String[] args) {
        GridLayout gridLayout;

        Display display = new Display();
        Shell shell = new Shell(display);

        gridLayout = new GridLayout(3, false);
        shell.setLayout(gridLayout);

        {

            Label promptLabel = new Label(shell, SWT.NONE);
            promptLabel.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false));
            promptLabel.setText("PROMPT:");

            Text commandLineText = new Text(shell, SWT.SINGLE);
            commandLineText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false));

            Button commandLineButton = new Button( shell, SWT.PUSH);
            commandLineButton.setLayoutData(new GridData(SWT.RIGHT, SWT.TOP, false, false));
            commandLineButton.setText("Say");

        }


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

Upvotes: 0

Views: 609

Answers (1)

Baz
Baz

Reputation: 36884

Depending on whether you want it to grow vertically or horizontally, you need to set the GridData as follows:

  • Horizontal fill: new GridData(SWT.FILL, ?, true, ?)

  • Vertical fill: new GridData(?, SWT.FILL, ?, true)

Here is the Javadoc:

GridData(int horizontalAlignment,
         int verticalAlignment,
         boolean grabExcessHorizontalSpace,
         boolean grabExcessVerticalSpace)
  • horizontalAlignment - how control will be positioned horizontally within a cell, one of: SWT.BEGINNING (or SWT.LEFT), SWT.CENTER, SWT.END (or SWT.RIGHT), or SWT.FILL
  • verticalAlignment - how control will be positioned vertically within a cell, one of: SWT.BEGINNING (or SWT.TOP), SWT.CENTER, SWT.END (or SWT.BOTTOM), or SWT.FILL
  • grabExcessHorizontalSpace - whether cell will be made wide enough to fit the remaining horizontal space
  • grabExcessVerticalSpace - whether cell will be made high enough to fit the remaining vertical space

Also make sure that the parent takes up all the space you want the children to occupy.

Upvotes: 2

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