When the frame is resized by dragging on a corner the non-grid widgets on
the panel do not shrink, but are lost to view. This seems to be the result
of having a wx.Grid with a defined number of rows occupying most of the
panel's interior.
What is the recommended way of addressing this issue? I've not seen a way
to make the grid shrink with the frame. I know that I can append rows as
needed, but that's done in a method when the 'Add' button is clicked and the
data fill the last available row.