Re: who could tell me?
"Lee Tow" <email@example.com> wrote in message
I create a COM using ATL,and it support dual,look:
STDMETHODIMP CAdd::sub(long n1, long n2, long *pVal)
v.vt = VT_I4; v.lVal = 3; // this is the second parameter
v.vt = VT_I4; v.lVal = 2; // this is the first parameter
I want to know why the v is he second parameter,v is the first
IDispatch::Invoke expects parameters in reverse order. The only
rationale I've seen for this is some vague hand-waving about it being
helpful for universal marshaller to marshal parameters more efficiently
(I can't imagine how it could possibly help though). Just accept it as a
fact of life, and move on.
With best wishes,
With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925
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