How can a small square button be created with ImageSize -> {20,20}
?
The x-dimension won't go below about 70.
(Using version 9.0.1 on OS X.)
Grid[{
{Button["", ImageSize -> {10, 10}],
Button["", ImageSize -> {20, 20}]},
{Button["", ImageSize -> {30, 30}],
Button["", ImageSize -> {90, 30}]}},
Frame -> All, Alignment -> Left]