Class java.awt.event.PaintEvent - JDK 5 Documentation v1.1.8, Java 2 SDK 英文文档

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Class java.awt.event.PaintEvent

java.lang.Object
   |
   +----java.util.EventObject
           |
           +----java.awt.AWTEvent
                   |
                   +----java.awt.event.ComponentEvent
                           |
                           +----java.awt.event.PaintEvent

public class PaintEvent
extends ComponentEvent

The component-level paint event. This event is a special type which is used to ensure that paint/update method calls are serialized along with the other events delivered from the event queue. This event is not designed to be used with the Event Listener model; programs should continue to override paint/update methods in order render themselves properly.

PAINT: The paint event type.
PAINT_FIRST: Marks the first integer id for the range of paint event ids.
PAINT_LAST: Marks the last integer id for the range of paint event ids.
UPDATE: The update event type.

PaintEvent(Component, int, Rectangle): Constructs a PaintEvent object with the specified source component and type.

getUpdateRect(): Returns the rectangle representing the area which needs to be repainted in response to this event.
paramString()
setUpdateRect(Rectangle): Sets the rectangle representing the area which needs to be repainted in response to this event.

PAINT_FIRST

 public static final int PAINT_FIRST

Marks the first integer id for the range of paint event ids.

PAINT_LAST

 public static final int PAINT_LAST

Marks the last integer id for the range of paint event ids.

PAINT

 public static final int PAINT

The paint event type.

UPDATE

 public static final int UPDATE

The update event type.

PaintEvent

 public PaintEvent(Component source,
                   int id,
                   Rectangle updateRect)

Constructs a PaintEvent object with the specified source component and type.

Parameters:: source - the object where the event originated

getUpdateRect

 public Rectangle getUpdateRect()

Returns the rectangle representing the area which needs to be repainted in response to this event.

setUpdateRect

 public void setUpdateRect(Rectangle updateRect)

Sets the rectangle representing the area which needs to be repainted in response to this event.

Parameters:: updateRect - the rectangle area which needs to be repainted

paramString

 public String paramString()

Overrides:: paramString in class ComponentEvent

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