Buttons in a grid?

Is it possible to have custom buttons (or Active Widget Button) in a grid? We need that for picking dates and items for filling various cells in a row. This is for use in a web-based order/order items application.
If regular buttons are not possible, any workaround (images, classes) with onclick event that can open a new window or "modal" dialog would do the trick. Any insight is helpful. Thank you!

You can just put any html into the grid cells -

obj.setCellText('<button>Click me</button>', 1, 1);

or make custom cell template -

http://www.activewidgets.com/grid.examples/indicator-template.html