Jump to content

  • Log In with Google      Sign In   
  • Create Account


[java] Repaint in Java 2


Old topic!
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.

  • You cannot reply to this topic
1 reply to this topic

#1 javanerd   Members   -  Reputation: 122

Like
Likes
Like

Posted 04 April 2000 - 08:10 AM

I just noticed that in Java 2 the painting doesn't work in a java.awt.Component subclass with the following code:
// Somewhere in the code we get the graphics object
m_componentGraphics.getGraphics();

// Draw the new frontbuffer to the screen
m_componentGraphics.drawImage( m_frontBuffer, 0, 0, null );
 
But for some reason if I make my graphics engine a subclass of java.awt.Canvas everything works again. The above code works just fine in Java 1.1 within a Component subclass. It smells like something has been changed in the AWT's peer system between Java 1.1 and Java 2. Does anyone know what causes this behaviour? Edited by - javanerd on 4/4/00 2:10:40 PM

Sponsor:

#2 Jim_Ross   Members   -  Reputation: 122

Like
Likes
Like

Posted 05 April 2000 - 02:57 AM

java.awt.Component doesn''t have a drawImage method. If those two lines are your actuall code, then it is simply a matter of doing
Graphics m_componentGraphics = m_component.getGraphics();
The graphics class does not have a getGraphics() methods.

If that is not really your problem, the only thing I can think of is that Canvas'' paint() overrides Component''s paint. There might be a difference there. Also, try java.awt.Component.updateImage() instead of java.awt.Graphics.drawImage(); That might do the trick.




Old topic!
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.



PARTNERS