TTMSFNCDataGrid.ColumnCustomCalculation Method

Runs a user-supplied callback over column values and returns the computed result.

API unit family: TMSFNCDataGrid Declaring type: TTMSFNCDataGrid Inherited from: TTMSFNCCustomDataGrid

Syntax

function ColumnCustomCalculation(AColumn: Integer; ACustomCalculationCallback: TTMSFNCDataGridDataCustomColumnCalculationCallback = nil; AFromRow: Integer = -1; AToRow: Integer = -1): Double;

Parameters

Name	Description
AColumn	Zero-based column index.
ACustomCalculationCallback	Callback that receives each cell value and accumulates the result.
AFromRow	First row to include, or -1 for the first data row.
AToRow	Last row to include, or -1 for the last data row.

Returns

The Double result produced by the callback.