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DTDay.rst

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DTDay

Get the day part of a date & time string.

DTDay PROTO lpszDateTimeString:DWORD, DateFormat:DWORD

Parameters

  • lpszDateTimeString - Pointer to a buffer containing the date & time string to retrieve the day portion from. The format of the date & time string is determined by the DateFormat parameter.
  • DateFormat - Value indicating the date & time format used in the buffer pointed to by lpszDateTimeString parameter. The parameter can contain one of the following constants as listed in the :ref:`DateTime Formats<DateTime Formats>` page and as defined in the DateTime.inc include file.

Returns

Returns the day value in EAX

Example

.data
DateTimeStringValue db "2008/03/21 16:21:01:00",0

.data?
DayValue dd ?

.code
Invoke DTDay, Addr DateTimeStringValue, CCYYMMDDHHMMSSMS
mov DayValue, eax ; save day part of date value to data variable
; eax should contain 21

See Also

:ref:`DTMonth<DTMonth>`, :ref:`DTYear<DTYear>`, :ref:`DTIsLeapYear<DTIsLeapYear>`, :ref:`DTDayOfWeek<DTDayOfWeek>`, :ref:`DateTime Formats<DateTime Formats>`