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
return text;
		}
		case TREE: {
			Tree tree = new Tree(parent, SWT.BORDER | SWT.MULTI);
			tree.setHeaderVisible(true);
			TreeColumn column0 = new TreeColumn(tree, SWT.LEFT);
			column0.setText("Name");
			TreeColumn column1 = new TreeColumn(tree, SWT.RIGHT);
			column1.setText("Value");
			TreeColumn column2 = new TreeColumn(tree, SWT.CENTER);
			column2.setText("Description");
			for (int i = 0; i < 3; i++) {
				TreeItem item = new TreeItem(tree, SWT.NONE);
				item.setText(0, prefix+" name "+i);
				item.setText(1, prefix+" value "+i);
				item.setText(2, prefix+" description "+i);
				for (int j = 0; j < 3; j++) {
					TreeItem subItem = new TreeItem(item, SWT.NONE);
					subItem.setText(0, prefix+" name "+i+" "+j);
					subItem.setText(1, prefix+" value "+i+" "+j);
					subItem.setText(2, prefix+" description "+i+" "+j);
					for (int k = 0; k < 3; k++) {
						TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
						subsubItem.setText(0, prefix+" name "+i+" "+j+" "+k);
						subsubItem.setText(1, prefix+" value "+i+" "+j+" "+k);
						subsubItem.setText(2, prefix+" description "+i+" "+j+" "+k);
					}
				}
			}
			column0.pack();