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bVirtualColumn

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Purpose

Defines a virtual column in the bBrowser.

Class

bVirtualColumn

Properties

FieldSpec(Access / Assign)

Inherits From

bDataColumn

Inherited By

bCheckColumn

bVirtualFieldColumn

Description

A virtual column does not contain data values from a field in a data server but uses an expression. These values can be edited without using bDataColumn. The changed values will manage the virtual column and can be enquired about using special methods.

 

The class bVirtualColumn is a base class from which the classes

bCheckColumn and

bVirtualFieldColumn

are inherited. These classes define special virtual columns for certain abilities.

 

The class bCheckColumn is a virtual column for a logical field. The data values of this can be either TRUE or FALSE.

 

The class bVirtualFieldColumn is a virtual column for data values of arbitrary data type. The data type for the data values must be defined using a FieldSpec.

 

Important notes!
The class bVirtualColumn may not be used directly in the bBrowser. After creating a virtual column the access bDataColumn:Editable has the value TRUE.

See Also

bCheckColumn

bDataColumn

bDataColumn:Editable

bVirtualFieldColumn

 


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