java.awt
Class Canvas

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Canvas

All Implemented Interfaces:

java.awt.image.ImageObserver

public class Canvas

extends Component

A Canvas component. This is a generic component which needs to be subclassed in order to add some interesting functionality.

Field Summary

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Canvas()

Method Summary

void	addNotify() Creates the peer of the canvas.
void	paint(Graphics g) Paints the canvas in the default background color.

Methods inherited from class java.awt.Component

action, bounds, checkImage, checkImage, createImage, createImage, deliverEvent, disable, enable, enable, getBackground, getColorModel, getFont, getFontMetrics, getForeground, getGraphics, getParent, getPeer, getToolkit, gotFocus, handleEvent, hide, imageUpdate, inside, invalidate, isEnabled, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, removeNotify, repaint, repaint, repaint, repaint, requestFocus, reshape, resize, resize, setBackground, setFont, setForeground, show, show, size, toString, update, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Canvas

public Canvas()

Method Detail

addNotify

public void addNotify()

Creates the peer of the canvas. This peer allows you to change the user interface of the canvas without changing its functionality.

Overrides:

addNotify in class Component

See Also:

Component.getPeer(), Component.removeNotify()

paint

public void paint(Graphics g)

Paints the canvas in the default background color.

Overrides:

paint in class Component

Parameters:

g - the specified Graphics window

See Also:

Component.update(java.awt.Graphics)