Bug 189847 [DND] Combo/Text on Linux does not fire Drop event.
examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/dnd/DNDExample.java
if (b.getSelection()) {
				dropFeedback |= DND.FEEDBACK_SCROLL;			
			} else {
				dropFeedback &= ~DND.FEEDBACK_SCROLL;
			}
		}
	});
	
	
	b = new Button(parent, SWT.CHECK);
	b.setText("FEEDBACK_INSERT_BEFORE");
	b.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			Button b = (Button)e.widget;
			if (b.getSelection()) {
				dropFeedback |= DND.FEEDBACK_INSERT_BEFORE;			
			} else {
				dropFeedback &= ~DND.FEEDBACK_INSERT_BEFORE;
			}
		}
	});
	
	b = new Button(parent, SWT.CHECK);
	b.setText("FEEDBACK_INSERT_AFTER");
	b.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			Button b = (Button)e.widget;
			if (b.getSelection()) {
				dropFeedback |= DND.FEEDBACK_INSERT_AFTER;
			} else {