How to set transparent background of JDialog

java swing background transparency translucency
Christian 'fuzi' Orgler picture Christian 'fuzi' Orgler · Jan 7, 2011 · Viewed 19.8k times · Source

Hy,..

how can i set the background transparent and "remove" the closeoperation (marked red) ? I only want to show the card :-)

alt text

Thanks..!

Answer

Tomek picture Tomek · Mar 15, 2012

Although there is no problem with UNDECORATED JFrame transparency (myJFrame.setBackground (new Color (0,0,0,0)); is pretty enough), the same with JDialog is not working.

I discovered, however, the following sequence works perfect for JDialog:

myJDialog.getRootPane ().setOpaque (false);
myJDialog.getContentPane ().setBackground (new Color (0, 0, 0, 0));
myJDialog.setBackground (new Color (0, 0, 0, 0));

A also remain, but it is my PRIVATE, humble suggestion, that all setBackground call for Window extenders (e.g. JFrame, JDialog) should be tried against UnsupportedOperationException and IllegalComponentStateException.

Related questions

Simplest way to set image as JPanel background

How would I add the backgroung image to my JPanel without creating a new class or method, but simply by inserting it along with the rest of the JPanel's attributes? I am trying to set a JPanel's background using an …

Read More
Setting background images in JFrame

Are any methods available to set an image as background in a JFrame?

Read More
Adding image to JFrame

So I am using Eclipse with Windows builder. I was just wondering if there was anyway I can import an image that'll show up on the JFrame that I can easily move around and re-size instead of setting the location …

Read More