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DVARIANT.ToLongArraymethod

Extracts an array of LONG values from DVARIANT.

COMmethodDVARIANT.INCdocumented

Syntax

FUNCTION ToLongArray (BYVAL prgn AS LONG PTR, BYVAL crgn AS ULONG) AS ULONG

Parameters

NameDescription
prgnPointer to a buffer that contains crgn LONG variables. When this function returns, the buffer has been initialized with Int32 elements extracted from DVARIANT.
crgnThe number of elements in the buffer pointed to by prgn.

Return value

This helper function is used when the calling application expects a VARIANT to hold an array that consists of a fixed number of Int32 values.

If the source VARIANT is of type VT_ARRAY OR VT_I4, this function extracts up to crgn Int32 values and places them into the buffer pointed to by prgn. If the VARIANT contains more elements than will fit into the prgn buffer, this function returns 0.

Description

Extracts an array of LONG values from DVARIANT.

Reference

  • Include file DVARIANT.INC
  • Defined in AfxNova/DVARIANT.inc:2058
  • Documented in COM/DVARIANT Class.md
  • Topic: DVARIANT Class