See Check Box Design Options

File: ...\Samples\Vfp98\Solution\Controls\Checkbox\Checkbox.scx

This sample illustrates a variety of properties that can be set to customize check box display.

Property Description
ControlSource A variable or table field that is numeric or logical.
Picture Bitmap displayed if Style is Graphical.
Style Graphical for pictures or standard for a box.
Value .T., .F., 0, 1, 2, or .NULL.