foldEditor.horizontalAlignment = SWT.CENTER;
foldEditor.setEditor(foldCheckBox, item, 0);
TableEditor collapseEditor = new TableEditor(table);
final Button initialCheckBox = new Button(table, SWT.CHECK);
initialCheckBox.pack();
collapseEditor.minimumWidth = initialCheckBox.getSize().x;
collapseEditor.horizontalAlignment = SWT.CENTER;
collapseEditor.setEditor(initialCheckBox, item, 1);
item.setText(2, labelText);