Solved

MDI performance problem with JInternalFrames

Posted on 2001-07-09
4
408 Views
Last Modified: 2012-06-21
I'm creating an applet which implements a MDI (Multiple Document Interface) using the jdk 1.2 (with respective swing components from the javax.swing.* package).  The MDI consists of a JFrame which contains a JDesktopPane.   JInternalFrames are created and then added to the JDesktopPane (via a separate Thread) using the method call:

jDesktopPaneObject.add(jInternalFrameObject).

The JInternalFrames appear on the JDesktopPane OK, however their GUI performance is terrible.  Repositioning (draging and droping) or resizing the window is excrusiatingly slow (about 20x slower than using simple JFrames).  

Does anyone know how I could improve the GUI performance of my MDI so that my
JInternalFrames respond about as well as if I used JFrames?

0
Comment
Question by:CatDevlp00
  • 2
  • 2
4 Comments
 
LVL 7

Expert Comment

by:Sasha_Mapa
ID: 6268106
A. DON'T use 1.2 - use either 1.1 (this is preferable, if you can) or 1.3
B. Try myDesktopPane.putClientProperty("JDesktopPane.dragMode", "outline") or myDesktopPane.putClientProperty("JDesktopPane.dragMode", "faster")


Sasha Maryanovsky.
0
 

Author Comment

by:CatDevlp00
ID: 6270120
Thanks for the help Sasha

However I don't have a choice for the jdk version, I must use 1.2.

The call myDesktopPane.putClientProperty ("JDesktopPane.dragMode", "outline") improves the performance to an acceptable level.  However, if I can, I would like to drag and drop the entire JInternal frame and not just the outline.  The other method
myDesktopPane.putClientProperty("JDesktopPane.dragMode", "fastest") doesn't improve the performance.  Do have any other ideas on how to improve performance dragging and dropping JInternalFrames?

0
 
LVL 7

Accepted Solution

by:
Sasha_Mapa earned 300 total points
ID: 6272180
>The other method myDesktopPane.putClientProperty("JDesktopPane.dragMode", "fastest") doesn't improve the performance.

It's not "fastest", it's "faster" - it should improve performance of dragging significantly.

Sasha Maryanovsky.
0
 

Author Comment

by:CatDevlp00
ID: 6273604
Thanks for the help Sasha, I must have been starring at my screen too long yesterday.
I tried "faster" which did improve the drop and drag performance of the JInternalFrames.
However, performance still suffers if the user opens more than 3 JInternal Frames at once.

I'm going to use "outline" instead, which will be acceptable.  Thanks for your help.  
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For customizing the look of your lightweight component and making it look lucid like it was made of glass. Or: how to make your component more Apple-ish ;) This tip assumes your component to be of rectangular shape and completely opaque. (COD…
INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:

821 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question