我现在用c++编写了一个程序,希望能够和extend交换数据,以及自动对extend进行一些操作。我参阅了例子里的关于OLE AUTOMATION方面的c++程序,但搞得不是很懂。比如说,c++程序向extend发送一个数据: @/ m# |+ j% w# L( U9 E. a0 I
Name = (WCHAR *) L"Poke"; ' v* b9 l' M: P/ g& k ) R. |, ], r5 G# `+ H, P x
hr = m_pDisp->GetIDsOfNames ( , H- f; I' H3 V* U' j% e7 _ IID_NULL, // reserved# d2 [" W2 w+ m. F5 h$ x9 K
&Name, // Array of names to get IDs for4 F4 k& F6 ]0 V u, r5 h
1, // # of names in the array + w/ D% W! D2 q% W LOCALE_SYSTEM_DEFAULT, // System locale* c) p) x* s$ p
&pokeID); // Array of IDs to fill on output ! R% ~, N t$ D ! K# {' F/ C; T6 ]
if (hr)6 J+ a, q* X# W* u) ^( U
{; g# Z, Q# {! P7 Y- g! n y
MessageBox ("Get Poke Unsuccessful");1 h$ Y/ _2 D; O* a5 W4 v$ v
return;5 ?/ c, ~# A; @! I5 M! H5 m9 L8 T' w
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- N: S9 z q0 e2 y% A/**************************传递数据给extend**************************************/ , F0 g( @) L. n( e pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 1 Y; F" Q7 h$ _9 ^! \3 ~ $ D9 K" s0 e9 Y; v* F
valueStr = SysAllocString((WCHAR *) L"1232");- S; T$ W* ~! G3 `2 k
VariantInit(&pokeVariant[0]); $ m3 |1 ~* B, M) M! b
pokeVariant[0].vt = VT_BSTR; 8 |; S+ N. B& Y% \" ?2 Q pokeVariant[0].bstrVal = valueStr; 9 F7 g0 S# t1 M9 @3 x6 A' g' v# D& y
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); * {) N1 r1 {' ^ VariantInit(&pokeVariant[1]); " p! Q+ S# |) K# F/ L9 i pokeVariant[1].vt = VT_BSTR; " m. r+ Q, J% D( b4 [ pokeVariant[1].bstrVal = itemStr;, B6 j' i+ X$ g1 b, u- g
1 Y$ a j" V7 b topicStr = SysAllocString((WCHAR *) L"system"); 3 A) {# J) [. p U* @ VariantInit(&pokeVariant[2]); 2 s# n' L4 ~) n: h+ u, E" ]1 X+ q
pokeVariant[2].vt = VT_BSTR; ! c& N5 H$ q% g& P' Y pokeVariant[2].bstrVal = topicStr; % ?; l# F$ y, m4 q" z: e: f% _- Z( x O, C8 ~7 P
// Set the DISPPARAMS structure that holds the variant. 7 `/ k. V1 k" u8 }1 ^! ]9 p! R8 y3 h3 ~" [" ?6 h1 N
dp.rgvarg = pokeVariant; 4 E8 l) m; Q3 `; @ S6 b dp.cArgs = 3;* E& F! k& v0 m' B6 u
dp.rgdispidNamedArgs = NULL;4 o5 E* V( Y6 I6 C6 o( `, t
dp.cNamedArgs = 0;- s/ z: C8 K- O0 Z, c' ~* e% H
" Z; I: \4 a( }' N// Call IDispatch::Invoke() % T* X' L; |8 V; m3 q ) S' q4 u4 U# y2 @3 x, C hr = m_pDisp->Invoke(. }- D* s% ]; Q: |4 k( B+ u
pokeID, g4 f/ }% | E! T! s( }0 F
IID_NULL,8 t& U% [4 l/ o) o* s8 F, Z
LOCALE_SYSTEM_DEFAULT,9 W+ q& A1 W! m8 n2 m" i
DISPATCH_METHOD, 0 _" d! D* M2 X) I9 e* \4 r &dp,8 X9 }( W4 {$ J9 M: z
NULL, 4 a/ ~: {1 u5 K; ` &ei, + `! m9 t0 y2 V& [6 C: i; e* I% L &uiErr);, m% A. D. _) a
" {% G5 e2 q2 b3 I# k6 S) l- k SysFreeString(topicStr); ) x9 t8 A* l! P, Q1 J SysFreeString(itemStr);- F: s) z* M/ M# P6 p
SysFreeString(valueStr);" w. k& S7 q# V+ d# X: M9 S" e, ]