GetDoubleValue method

Builder Syntax	int __fastcall GetDoubleValue(Cardinal uIndex, Cardinal uCount);
Delphi Syntax	function GetDoubleValue(uIndex, uCount: Cardinal): Integer;
Overview	Refer to Working with Data Sets.

Remarks

Updates the DoubleValues property with the double value(s) associated with the item specified in the CurrentElement property. This method also updates the DoubleValueCount property to uCount, where uCount is the number of double values to get.

If you call this method with uCount greater than the number of double values in the Value Field of the specified item, this method will return an error. For example, if there are only three double values in the Value Field and you call this method with uCount set to four, an error will be returned.

If you have more than one value stored in the Value Field of the specified Data Element, you can retrieve one or more of those elements. For example, if the Value Field of the specified Data Element contains three double values, and you are only interested in retrieving the last two double values, set uIndex to 1 and uCount to 2. This tells the method to retrieve the double values starting at position 1 (the index is zero based) and retrieve two values. Therefore you would retrieve the values in positions 1 and 2 in the Value Field.

This method can be called only if the Value Representation of the Data Element is VR_DS or VR_FD. For more information about Value Representations, refer to Default Value Representation Table.