Unit 'fpexprpars'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Index]	[#fcl]

TExprBuiltInManager.AddDateTimeVariable

Add datetime variable to built-in collection

Declaration

Source position: fpexprpars.pp line 823

public function TExprBuiltInManager.AddDateTimeVariable(

const ACategory: TBuiltInCategory;

const AName: ShortString;

AValue: TDateTime

):TFPBuiltInExprIdentifierDef;

Arguments

`ACategory`		Category for the datetime variable
`AName`		Name of the datetime variable
`AValue`		Initial datetime value

Function result

Returns the added datetime variable identifier

Description

The AddDateTimeVariable method adds a datetime variable with the specified name and initial value to the built-in collection. The variable will be available in expressions under the provided name and will initially hold the specified datetime value.

Built-in datetime variables can be used to provide predefined date/time values like current date, system timestamps, or reference dates that expressions can access and use in date/time calculations.