SafeArrayAllocData

项目
06/30/2006

This function allocates memory for a safearray, based on a descriptor created with SafeArrayAllocDescriptor.

HRESULT SafeArrayAllocData(
  SAFEARRAY FAR* psa 
);

Parameters

psa
[in] Pointer to an array descriptor created by SafeArrayAllocDescriptor.

Return Values

The following table shows the HRESULT values that can be returned by this function.

Value	Description
S_OK	Success.
E_INVALIDARG	The psa parameter was not a valid safearray descriptor.
E_UNEXPECTED	The array could not be locked.

Remarks

Passing invalid (and under some circumstances NULL) pointers to this function causes an unexpected termination of the application.

Example

The following code example creates a safearray using the SafeArrayAllocDescriptor and SafeArrayAllocData functions.

SAFEARRAY FAR* FAR*ppsa;
unsigned int ndim = 2;
HRESULT HRESULT = SafeArrayAllocDescriptor(ndim, ppsa);
if( FAILED(hresult))
  return ERR_OutOfMemory;
(*ppsa)->rgsabound[ 0 ].lLbound = 0;
(*ppsa)->rgsabound[ 0 ].cElements = 5;
(*ppsa)->rgsabound[ 1 ].lLbound = 1;
(*ppsa)->rgsabound[ 1 ].cElements = 4;
HRESULT = SafeArrayAllocData(*ppsa);
if( FAILED(hresult)) {
  SafeArrayDestroyDescriptor(*ppsa)
  return ERR_OutOfMemory;
}

Requirements

OS Versions: Windows CE 2.0 and later.
Header: Oleauto.h.
Link Library: Oleaut32.lib.

通过