Class TBColumn() Foundation
Class function of the TBColumn class.
The class object generates TBColumn objects using its class method :new().
TBColumn objects are simple objects that contain instance variables and no methods. They are used exclusively by a TBrowse object. The instance variables in the TBColumn object are used by the TBrowse to display a single column of data in the browse window of the TBrowse object.
The most important instance variable (:block) contains a code block which retrieves data out of the appropriate column of the data source. For example, the column might retrieve the value of a particular field in a work area or a column of a two-dimensional array.
Besides retrieving column data, TBColumn objects can control the color used to display the data.
When new values are assigned to instance variables of a TBColumn object in use by a TBrowse object, the TBrowse method :configure() must be called so that the changes to the column object are recognized (see TBrowse class).
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