Member variable XbpBrowse():firstPosBlock Foundation

Code block returning the lower limit for the vertical scroll bar.

Attribute: EXPORTED
Data type: Code block

A code block must be assigned to the instance variable :firstPosBlock. It returns a numeric value that indicates the lower limit of the values processed by vertical scroll bar. The instance variable is only used to configure the vertical scroll bar. Normally the code block {|| 1 } is used.


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