Bug 77535 Control example coolbar tab uses images in drop down
In the coolbar tab of the ControlExample, enable Item styles "SWT.DROP_DOWN". Now make the coolbar 100x100 so that a chevron is required to see some of the items. On WindowsNT, menus do not support images. When you select the menu from the chevron of the coolbar, it is blank because there are only images in the menu items.
examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CoolBarTab.java
final ToolBar  toolBar = toolItem.getParent();
					
					Rectangle toolItemBounds = toolItem.getBounds();
					Point point = toolBar.toDisplay(new Point(toolItemBounds.x, toolItemBounds.y));
					menu.setLocation(point.x, point.y + toolItemBounds.height);
					setMenuVisible(true);
				}
			} else {
				/*
				 * Main area of drop down tool item selected.
				 * An application would invoke the code to perform the action for the tool item.
				 */
			}
		}
		private void setMenuVisible(boolean visible) {
			menu.setVisible(visible);
			this.visible = visible;
		}
	}
	/**
	 * Listens to widgetSelected() events on SWT.DROP_DOWN type CoolItems
	 * and opens/closes a menu when appropriate.
	 */
	class CoolItemSelectionListener extends SelectionAdapter {
		private Menu menu = null;
		
		public void widgetSelected(SelectionEvent event) {
			/**
			 * A selection event will be fired when the cool item
			 * is selected by its gripper or if the drop down arrow