SafeArrayAllocDescriptor Function
Allocates memory for a safe array descriptor.
HRESULT SafeArrayAllocDescriptor( unsigned int cDims, SAFEARRAY ** ppsaOut );
This function allows the creation of safe arrays that contain elements with data types other than those provided by SafeArrayCreate. After creating an array descriptor using SafeArrayAllocDescriptor, set the element size in the array descriptor, an call SafeArrayAllocData to allocate memory for the array elements.
The following example creates a safe array using the SafeArrayAllocDescriptor and SafeArrayAllocData Function functions.
SAFEARRAY *psa;
unsigned int ndim = 2;
HRESULT hresult = SafeArrayAllocDescriptor( ndim, &psa );
if( FAILED( hresult ) )
return ERR_OutOfMemory;
(psa)->rgsabound[ 0 ].lLbound = 0;
(psa)->rgsabound[ 0 ].cElements = 5;
(psa)->rgsabound[ 1 ].lLbound = 1;
(psa)->rgsabound[ 1 ].cElements = 4;
hresult = SafeArrayAllocData( psa );
if( FAILED( hresult ) ) {
SafeArrayDestroyDescriptor( psa )
return ERR_OutOfMemory;
}