How to make child composite fill parent in swt

java, swt

Solution

When using `GridLayout` you use `GridData` arguments to control `setLayoutData` methods to specify how the grid is filled.

You want something like:

  shell.setLayout(new GridLayout(1, false));

  Composite childComposite = new Composite(shell, SWT.BORDER);

  // Composite fills the grid row
  childComposite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));

  // Use 5 equal sized columns
  childComposite.setLayout(new GridLayout(5, true));

  // First text fills the first column
  Text text1 = new Text(childComposite, SWT.NONE);
  text1.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

  // Second text fills the next 4 columns
  Text text2 = new Text(childComposite, SWT.NONE);
  text2.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 4, 1));

  Label label = new Label(shell, SWT.NONE);
  label.setText("Very loooooooooooooooooooooooong text");

Problem

Here is my code: ``` public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new GridLayout(1, false)); Composite childComposite = new Composite(shell, SWT.BORDER); childComposite.setLayout(new GridLayout(2, false)); Text text1 = new Text(childComposite, SWT.NONE); Text text2 = new Text(childComposite, SWT.NONE ); Label label = new Label(shell, SWT.NONE); label.setText("Very loooooooooooooooooooooooong text"); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } display.dispose(); } ``` This will produce something like this: My question is how can i make my child composite fill the parent horizontally (be at least the same width that the label below). I tried using something like this: ``` Composite childComposite = new Composite(shell, SWT.BORDER | SWT.FILL); ``` ... but that didnt change anything. Also when the child is the same width as parent i want the text widgets to also fill the composite they are in but with different widths - for example the first is 20% and the second is 80%. What possibilities should i check out to accomplish this?

Original source