System.DateUtils.HourSpan

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Delphi

function HourSpan(const ANow, AThen: TDateTime): Double;

C++

extern DELPHI_PACKAGE double __fastcall HourSpan(const System::TDateTime ANow, const System::TDateTime AThen);

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.DateUtils.pas System.DateUtils.hpp	System.DateUtils	System.DateUtils

Description

Returns the number of hours (including fractional hours) between two specified TDateTime values.

Call HourSpan to obtain the difference, in hours, between two TDateTime values. Unlike the HoursBetween function, which only counts entire hours, HourSpan reports incomplete hours as a fraction of an entire hour.

HourSpan always returns a positive result and therefore the parameter values are interchangeable.

See Also

• HoursBetween

• DaySpan

• MilliSecondSpan

• MinuteSpan

• MonthSpan

• SecondSpan

• WeekSpan

• YearSpan

• Date and Time Support

Code Examples

• DateTimeCompare (C++)
• DateTimeCompare (Delphi)