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:* ?% k3 m$ F. y# M
Name = (WCHAR *) L"Poke";- n* Z5 ^$ w B5 N
0 y: t- |7 [, u hr = m_pDisp->GetIDsOfNames ( 7 k7 A9 f" @+ i* D IID_NULL, // reserved- q" o! |& R7 o) i1 f
&Name, // Array of names to get IDs for h, ~3 E/ c# }% s J- F) w' H
1, // # of names in the array h" A6 u- v b LOCALE_SYSTEM_DEFAULT, // System locale D0 x. l- ~. O0 _ &pokeID); // Array of IDs to fill on output % F+ x- G, v+ ?0 h6 L ; K) p- u* ]' x# K9 r# B. Z7 x7 I if (hr)2 I: ]5 O& Q/ J' M4 L9 L
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MessageBox ("Get Poke Unsuccessful");. g8 w* c. N3 {* S+ T
return;: H0 @/ J: q- J) \" x2 d
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/**************************传递数据给extend**************************************/ ) p4 i; o. C9 f, O2 \5 V pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); + r$ M) H- V- m# q7 Z+ Z- i ) A Q* D/ {, n' s; V ]4 Y0 a! W2 w valueStr = SysAllocString((WCHAR *) L"1232"); s! w7 F. L) y N# e9 N; o. O1 { VariantInit(&pokeVariant[0]); ( n) t& G1 R* p+ P# T W% ~5 ~5 O pokeVariant[0].vt = VT_BSTR;. `' _5 M/ o( C, E1 m7 ^
pokeVariant[0].bstrVal = valueStr;# U# p0 a1 q8 @$ U- S. L9 r# c
8 Y$ e' f8 P* e V2 }( @6 d# p2 z% C itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ! m9 A- Z7 Y- k8 ]4 N) E" \: Q% h VariantInit(&pokeVariant[1]); 3 ~5 a* \7 T" F: ]: W) W" J1 W
pokeVariant[1].vt = VT_BSTR; 5 H! n/ p/ o e2 ]. V pokeVariant[1].bstrVal = itemStr;! J, M: _" {% w+ E, B C. O8 w- W* V1 o3 \
6 m/ p) Z$ }1 I topicStr = SysAllocString((WCHAR *) L"system"); " d; P7 Z) ~9 j VariantInit(&pokeVariant[2]); , x* y% A& G) o, ^; [, a* \* X pokeVariant[2].vt = VT_BSTR;8 a$ b! ~( ^& F
pokeVariant[2].bstrVal = topicStr;* }" G/ F5 U, o$ b9 @
$ ]& y1 ?( m4 a6 {// Set the DISPPARAMS structure that holds the variant.% R8 a7 D# G' Q. h9 T, I6 s2 v
1 n6 x' R: @ ]' L( I dp.rgvarg = pokeVariant; % f' E6 h8 G' f2 k& v2 t7 ~ dp.cArgs = 3; & W a6 E2 h. ` E! T dp.rgdispidNamedArgs = NULL;$ J8 }1 P$ S5 a+ ^1 d9 l) I
dp.cNamedArgs = 0; |% g2 ~# t& P! r0 ?
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// Call IDispatch::Invoke()$ w9 c% t: | d5 ^3 I, b' O
) J/ E. f" o% e/ w/ F% r hr = m_pDisp->Invoke( % ~ I& D2 q( A5 L pokeID, & C) V4 m' d5 u4 O% a IID_NULL,- b1 u' d& u7 Y, g
LOCALE_SYSTEM_DEFAULT, ( C, j! K$ `: g8 b5 L DISPATCH_METHOD, 1 `" v; k. N' N% Z7 ~, x &dp," n: H# J, P; q5 g
NULL,( Z1 I! P9 k& Y# `' G5 i& s
&ei,6 o" D0 C( T$ Y" e" i( \" _) ~
&uiErr); 3 c5 O, E% u- z4 b, g! P$ J / r" H6 C) u& A& ]: @ SysFreeString(topicStr); 7 ^6 |- d1 U- s; y+ H8 i, y9 s SysFreeString(itemStr);0 c& c9 F( c. q; Z" y
SysFreeString(valueStr);: O3 X/ |3 g, V. D: c2 E