How does one return a local CComSafeArray to a LPSAFEARRAY output parameter?

Question

I have a COM function that should return a SafeArray via a LPSAFEARRAY* out parameter. The function creates the SafeArray using ATL\'s CComSafeArray te

Answer 1

The problem is that you set the receiving CComSafeArray's internal pointer directly. Use the Attach() method to attach an existing SAFEARRAY to a CComSafeArray:

LPSAFEARRAY ar;
foo(&ar);
CComSafeArray sa;
sa.Attach(ar);