The problem with the layout of checkbox when using BooleanFieldEditor - eclipse-plugin

Question

I am trying to use BooleanFieldEditor instead of Button with style SWT.CHECK. And I am getting the problem with layout of the checkbox.
The significant part of my previous code is:
Composite projectGroup = new Composite(parent, SWT.NONE);
GridLayout layout = new GridLayout();
layout.numColumns = 1;
projectGroup.setLayout(layout);
projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
Button checkBox = new Button(projectGroup, SWT.CHECK);
checkBox.setText(Messages.getString("WizardNewProjectCreationPage.createEmptyProject")); //$NON-NLS-1$
checkBox.addSelectionListener(new SelectionAdapter() {
#Override
public void widgetSelected(SelectionEvent event) {
Button button = (Button) event.getSource();
shouldEmptyProjectBeCreated = button.getSelection();
}
});
It gives me this result:
In this case the checkbox has a small indent at the top and the left side.
The significant part of my current code is:
Composite projectGroup = new Composite(parent, SWT.NONE);
GridLayoutFactory.fillDefaults().extendedMargins(100, 0, 100, 0).spacing(100, 100).applyTo(projectGroup);
BooleanFieldEditor emptyProjectCheckbox = new BooleanFieldEditor("createEmptyProject",
Messages.getString("WizardNewProjectCreationPage.createEmptyProject"), projectGroup);
// GridDataFactory.defaultsFor(projectGroup).grab(true, false).span(2, 1).applyTo(projectGroup);
// emptyProjectCheckbox.fillIntoGrid(projectGroup, 1);
createEmptyProject = emptyProjectCheckbox.getBooleanValue();
Whatever values I set into extendedMargins() and spacing() methods, the result is the same - checkbox is located strictly at the level of the upper frame:
As you can see, in this case indents are smaller than on the first picture. I want to make the same indents as on the first image and want to understand, how to manage the location of BooleanFieldEditor's checkbox relatively to another elements.

Answer 1

Using second composite solves the problem:
Composite projectGroup = new Composite(parent, SWT.NONE);
GridLayoutFactory.fillDefaults().extendedMargins(5, 0, 5, 0).applyTo(projectGroup);
//intermediate composite, which needs to work around the problem with layout of checkbox of BooleanFieldEditor
Composite intermediateComposite = new Composite(projectGroup, SWT.NONE);
BooleanFieldEditor emptyProjectCheckbox = new BooleanFieldEditor("createEmptyProject",
Messages.getString("WizardNewProjectCreationPage.createEmptyProject"), intermediateComposite);
createEmptyProject = emptyProjectCheckbox.getBooleanValue();