I really don't see the problem, but this is my code:
Page class:
add(new GridView("someList", someList) {
// ...
}.setColumns(2));
Markup:
<table cellpadding="10" cellspacing="0" width="100%">
<tr wicket:id="someList" >
<td wicket:id="cols" width="50%" valign="top">
- [Wicket-user] write an entire tag? Vincent Jenks
- Re: [Wicket-user] write an entire tag? Igor Vaynberg
- Re: [Wicket-user] write an entire tag? Vincent Jenks
- Re: [Wicket-user] write an entire tag? Igor Vaynberg
- Re: [Wicket-user] write an entire tag? VGJ
- Re: [Wicket-user] write an entire tag... Igor Vaynberg
- Re: [Wicket-user] write an entire... VGJ
- Re: [Wicket-user] write an en... Igor Vaynberg
- Re: [Wicket-user] write an en... Vincent Jenks
- Re: [Wicket-user] write an entire... VGJ
- Re: [Wicket-user] write an en... Nick Heudecker
- Re: [Wicket-user] write an en... Igor Vaynberg
- Re: [Wicket-user] write an en... Vincent Jenks
- Re: [Wicket-user] write an en... Igor Vaynberg
- Re: [Wicket-user] write an en... VGJ
- Re: [Wicket-user] write an en... VGJ
- Re: [Wicket-user] write an en... Igor Vaynberg
- Re: [Wicket-user] write an en... Vincent Jenks
- Re: [Wicket-user] write an en... Igor Vaynberg
- Re: [Wicket-user] write an en... Vincent Jenks
- Re: [Wicket-user] write an en... VGJ