@Override
protected Control createDialogArea(Composite parent) {
Composite composite = (Composite) super.createDialogArea(parent);
Composite inner =
SWTFactory.createComposite(composite, composite.getFont(), 2, 1, GridData.FILL_BOTH);
SWTFactory.createLabel(inner, Messages.TclAddWatchpointDialog_expressionLabel, 1);
expressionField = SWTFactory.createText(inner, SWT.BORDER, 1, expression);
((GridData) expressionField.getLayoutData()).widthHint = convertWidthInCharsToPixels(20);
return composite;
}