public void GetVarDesc(int index, out IntPtr ppVarDesc)
{
// Fail BEFORE allocating the handle to avoid leaks. If the real COM object fails in this method
// and doesn't return the handle or clean it up itself there's not much we can do to avoid the leak.
_faultInjector.FailurePointThrow(MockTypeLibrariesFailurePoints.ITypeInfo_GetVarDesc);
ppVarDesc = _memoryHelper.AllocateHandle(Marshal.SizeOf <VARDESC>());
_memoryHelper.EnterSubAllocationScope(ppVarDesc);
VARDESC varDesc = new VARDESC();
varDesc.elemdescVar.tdesc = _definedVariables[index].CreateTypeDesc(new IntPtr(index + s_HREF_VARS_OFFSET), _memoryHelper);
_memoryHelper.ExitSubAllocationScope();
Marshal.StructureToPtr(varDesc, ppVarDesc, false);
}
