Started the reimplementing work on checkboxevents.c. A lot of shared (and often unnecessarily re-executed) code was for determining if we are in a checkbox; that's now a function that returns the row and column, cell rect, and checkbox rect if we are a checkbox.
Started the reimplementing work on checkboxevents.c. A lot of shared (and often unnecessarily re-executed) code was for determining if we are in a checkbox; that's now a function that returns the row and column, cell rect, and checkbox rect if we are a checkbox.

andlabs/wintable,andlabs/wintable