wxWidgets cross platform GUI problem

My environment:

Windows XP Pro Version 2002 SP2
Fedora core 5
wxWidgets 2.6.3

I have developed a wxWidgets GUI app on Windows XP Pro and it looks fine when executed. But when I copy the project over to a Fedora 5 core box and compiled/executed the app, it looks ugly. The listviews do not appear to have any depth or definition. The listviews just look like a 2d white square. The buttons appear to be "squished", for lack of a better description.

Thus, my question, is there any way I can improve the appearance of this wxWidgets GUI app on a Fedora core 5 distro in particular and possibly all Linux distro's in general?

Thanx

Maybe you can try a different theme for the window manager and see if that improves anything.

I was a little naive in thinking a wxWidgets cross platform port was totally seamless. wxWidgets Listviews in Linux need one or two additional attributes such as wxSUNKEN_BORDER etc. to make them more aesthetically appealing. Also, other items such as buttons have to be "tweaked" on the Linux side.

Thanx