TBColumn() > Instance variables |
Code block for edit validation.
Data type: | B | Default: | NIL |
Optionally, a code block can be assigned to :preValidate that is used to test if editing is allowed. This code block is not used by a TBColumn object but provides a convenient way for implementing editable browsers. :preBlock can be used by a Get() object when the current cell in a column should be edited.
http://www.xHarbour.com