如何禁用JFrame中的最小化按钮？

Question

Can I disable the minimize button in JFrame?

I have already tried setUndecorated() and setResizable() but both did not work.

I'm trying to add images to a panel at a random location (which works) but when the JFrame is minimized by clicking at the minimize button (not when frame minimizes by clicking the background window) images assemble at the top in a row.

Can someone help?

Thanks!

Answer 1

If you also want to disable the maximize button then you can use a JDialog instead of a JFrame... as far as I know you cannot disable the minimize button in a JFrame. JDialog only has a close button. Hope this helps

Answer 2

im trying to add imags to a panel at a random location which im able to do) bt wen frame is minimized by clicking at the minimize button (not wen frame minimizes by clicking at the background window) images assemble at the top in a row.

Well, it sounds like you are adding labels to a panel and using the setLocation() method to position the labels.

The problem is that by default a JPanel uses a FlowLayout so whenever you do anything to the frame like minimize, maximize, iconify or resize the frame the layout manger is invoked and the labels are arranged according the the rules of the layout manager.

If your requirement is to have random positioning, then you need to use a "null layout".

Read the section from the Swing tutorial that explains how Absolute Positioning works for more information and a working example.

Answer 3

使用JDialog代替JFrame，它的顶部只有Close按钮。