Anyway to fill a grid panel with buttons?

^Is there anyway to do this?
I’m using widget in a rather creative way…suffice to say I need to fill a grid panel with about 18*15 number of buttons with various size and overlapping (with different Zorder)
Putting them all in by drag and drop and edit their property one by one is going to be nightmare, would be nice if there is an easier way, for example by settting something to the grid panel