Event Modifiers

• Finally, the event's modifier field is used to tell what the state of the keyboard modifiers are when a mouse or key event occurs. The modifier's field may include any of the masks shown in the following table.

• As an example, if you want to know the state of the shift key when the mouse button is pressed, you can check the modifier's field as follows:

public boolean handleEvent(Event event)
{
if (event.id == Event.MOUSE_DOWN)
  {
  if ((event.modifiers & Event.SHIFT_MASK) > 0)
   System.out.println("Shift is down during press");
  else
   System.out.println("Shift is up during press");
  }
 return super.handleEvent(event);
  }

Additional Resources:

• Learning to Write Java
• Introducing Java (TM) - Your First Applet
• Java FAQs
• Java Software
• java.sun.com
• Sun Microsystems

Event Objects
Table of Contents
Exercise Eight