Why can't the bloody window get the right size?

I have a huge problem with graphical components... and I doubt that I'm alone with it. This concerns how to get the bloody windows to be laid out with the correct size. Java never wants to have the window sized as I set it. It's always different, and the size changes when I change platform. If I set the size for a JFrame in a Windows-environment, and then run the program on a Solaris environment, the window has a completely different size. Even when I switch from the CDE desktop to KDE or Gnome, every new environment presents a new way of laying out my application's windows, with different sizes.
Now, I have tried to get rid of the problem through various tricks... obviously the setBounds(x,x,x,x) method is a complete fake... that's when most problems occur. So I tried with the pack() method together with setting the preferred size of my components. That works better, but it's not even near to make me satisfied. The windows don't change dramatically with platform change, but a few pixels here and there.
It drives me crazy! I shouldn't be this hard to set the size of a normal bloody window! I can't believe that I still haven't figured out a failproof way of sizing my windows.. (I'm using the null layout, so I need to have exactly the correct size at all times)
If anyone has reached enlightenment on this topic, please contact me before I end up in some mental institution. ([email protected])
Please?
/Erik (from Sweden)

it's as simple as this. I want the space used to lay out components to be the same on all platforms.
I could just as well explain what I mean with "the space used to lay out components" too. if you set a Frame or JFrame to "undecorated", the only thing showing is that space... simple enough. but with frame decorations, such as title bar, window borders (used to resize windows)... it's not as simple, because these decorations differ on all platforms. even between windows-versions... windows XP has a far larger title-bar than windows 2000 (and earlier windows).
so what I need to do is to make my program to lay out the window, so that the area used to lay out components is the samt, independent of the decorations used on the particular system you're working with.
I think it should be clear enough now...
but I also have to tell you that I feel I'm as close to a solution as one could possibly be. because I took a peek in the bugs database and saw that there is a bug concerning the window size and position on KDE under linux, which is the platform I'm testing this on (apart from windows 2000/XP) so I might have solved the problem, just that java itself is buggy :)
I don't know, but I'm going to test it on different environments in Solaris this week... CDE, GNOME, KDE... such.
I used the setSize() method together with getInsets() to get the sizes of the decorations... but that method has to be called for after the JFrame is set visible ( show() ) so I have to resize the window after it is set visible and then hide() and show() it again... strange... but it might work now.

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