TTMSFNCCustomDataGrid.GroupCalculation Method

Runs an aggregate calculation on a column for every group of grouped data.

API unit family: TMSFNCDataGrid Declaring type: TTMSFNCCustomDataGrid

Overloads

Overload 1

Runs an aggregate calculation on a column for every group of grouped data.

FMX.TMSFNCDataGrid.hppPascalC++

procedure GroupCalculation(AColumn: Integer; AMethod: TTMSFNCDataGridDataCalculationMethod; ACalculationOptionsCallback: TTMSFNCDataGridDataGetColumnCalculationOptionsCallback = nil; ACustomCalculationCallback: TTMSFNCDataGridDataCustomColumnCalculationCallback = nil); overload;

void __fastcall GroupCalculation(int AColumn, TTMSFNCDataGridDataCalculationMethod AMethod, Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataGetColumnCalculationOptionsCallback ACalculationOptionsCallback = Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataGetColumnCalculationOptionsCallback(), Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataCustomColumnCalculationCallback ACustomCalculationCallback = Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataCustomColumnCalculationCallback())/* overload */;

Remarks

The dedicated methods (GroupSum, GroupAverage, ...) are shortcuts for this method. Call it after Group.

Parameters

Name	Description
AColumn	Zero-based column index.
AMethod	Calculation method to apply.
ACalculationOptionsCallback	Optional callback that adjusts the calculation options per column and level.
ACustomCalculationCallback	Callback for the custom method; when nil, OnCustomColumnCalculation is used.

Overload 2

Runs an aggregate calculation on several columns for every group of grouped data.

FMX.TMSFNCDataGrid.hppPascalC++

procedure GroupCalculation(AColumns: TArray<Integer>; AMethod: TTMSFNCDataGridDataCalculationMethod; ACalculationOptionsCallback: TTMSFNCDataGridDataGetColumnCalculationOptionsCallback = nil; ACustomCalculationCallback: TTMSFNCDataGridDataCustomColumnCalculationCallback = nil); overload;

void __fastcall GroupCalculation(System::DynamicArray<int> AColumns, TTMSFNCDataGridDataCalculationMethod AMethod, Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataGetColumnCalculationOptionsCallback ACalculationOptionsCallback = Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataGetColumnCalculationOptionsCallback(), Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataCustomColumnCalculationCallback ACustomCalculationCallback = Fmx::Tmsfncdatagriddata::_di_TTMSFNCDataGridDataCustomColumnCalculationCallback())/* overload */;

Parameters

Name	Description
AColumns	Array of zero-based column indices.
AMethod	Calculation method to apply.
ACalculationOptionsCallback	Optional callback to supply per-column calculation options.
ACustomCalculationCallback	Optional callback for a fully custom calculation.