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: / ~) j: g0 z, T" f- q. j' AName = (WCHAR *) L"Poke"; ( q, O. w9 ?% o) s( r' @% h # p/ ?9 T. r& H5 j* p hr = m_pDisp->GetIDsOfNames (, G+ b( q! [: Y/ k a
IID_NULL, // reserved% x! e& {$ E8 v$ K( \
&Name, // Array of names to get IDs for5 O- C$ ?1 L' d; G9 f; u# F$ P
1, // # of names in the array- j5 u$ w. s9 L g
LOCALE_SYSTEM_DEFAULT, // System locale - e3 N# `2 z ?& h& X &pokeID); // Array of IDs to fill on output8 S" Z7 K; D) H* {3 ~
: D* d) }. o2 ?! o& l5 H if (hr) * E: [2 N2 y2 D# s { # j' j- J/ h: m9 t9 d( m& B: H' } MessageBox ("Get Poke Unsuccessful"); - e* W# q# g3 S' g return;" G5 n* j' @3 o" o/ J5 `( A4 N# A
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/**************************传递数据给extend**************************************/% e$ X; ?* P3 W/ _
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ; J6 s& y3 v% D , v! l5 C7 q* g1 V
valueStr = SysAllocString((WCHAR *) L"1232"); 6 a& c* C/ A9 k; w4 X2 n- l9 Y VariantInit(&pokeVariant[0]); 5 i: |2 Q* ^# s9 y6 V% |) j pokeVariant[0].vt = VT_BSTR; . A8 z: B% |4 @& t! H& H3 \- } pokeVariant[0].bstrVal = valueStr; 9 }0 w% {5 B1 n* J$ s/ B( F _4 X$ I/ e; p+ t2 Y
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");- U+ V7 l0 `4 k5 f: ]4 W
VariantInit(&pokeVariant[1]); ; O9 j; i1 O) i, e5 N pokeVariant[1].vt = VT_BSTR;% |2 B1 T( u7 l; F
pokeVariant[1].bstrVal = itemStr;) N. L3 B/ O. e, D
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topicStr = SysAllocString((WCHAR *) L"system"); m7 w2 `3 c! d1 F VariantInit(&pokeVariant[2]); ; O) \4 [8 G1 r7 m0 M) L pokeVariant[2].vt = VT_BSTR; * g3 V& H3 {0 }5 \6 c pokeVariant[2].bstrVal = topicStr;+ k8 H- h4 ]# U
2 r8 E% `1 ^$ ~ Z% v+ |" e5 F0 s// Set the DISPPARAMS structure that holds the variant. 2 Z( ^; y i$ i% ?- j3 H7 S0 a4 H3 y# {7 o, n* _: A |
dp.rgvarg = pokeVariant;# p3 J8 ] E4 `; @6 `' i7 |
dp.cArgs = 3; : t/ A. j6 d: ]$ s. ` dp.rgdispidNamedArgs = NULL; ' v; w ?( P/ q dp.cNamedArgs = 0;+ q' D2 W6 N/ G( p) O
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// Call IDispatch::Invoke() + |9 ~, c1 `, ?) B6 P1 F# Z: C- j% q% |' z0 w, v% e# c
hr = m_pDisp->Invoke( 4 T6 u- l# ]' M `* ?/ T pokeID,% [8 q0 f9 u) C" _6 j6 l
IID_NULL, 0 s. { ]5 w8 Y* H: C LOCALE_SYSTEM_DEFAULT,) Z( ~9 q R: }2 A
DISPATCH_METHOD, ?1 s5 A: u8 T% {# g( [- b
&dp, & C ^: y$ c; @0 o# N5 ]& Z0 n NULL,9 O, t- x& J: G% m) _
&ei, * U3 S( l, y8 Z+ S* L/ `- b. V &uiErr);/ Z: Y( N1 o( {: i1 B
# r+ l6 }' v; A1 v/ b+ H4 B SysFreeString(topicStr);, s) M5 {# I% S1 n ~! n; M
SysFreeString(itemStr); 0 a( o2 f! [2 W' C* k3 S Z SysFreeString(valueStr);1 s+ S& N: b% |4 H
9 i+ w: `; e/ E2.这是request的程序) {$ U% L& ~" b) b
// Request a value from Extend5 B2 b$ s" `: A; o9 O1 G
// & x! g! J" H4 E4 z! r5 L// Initialize the variant that will hold the BSTR. Set the variant's$ t" W& H7 |3 n5 e# q5 h
// type flag to indicate the fact that this variant holds a BSTR. Place the ! D7 C. ]3 C3 S# A2 D; }0 A5 A// BSTR into the variant structure./ i% M$ V. u) U
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); # R! u7 i# m, N: c 9 |6 q1 N9 n3 h3 W- N2 o
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); - O b0 @7 ]- \' O- F3 w" _/ A VariantInit(&requestVariant[0]); 0 x8 R2 ^ E% b5 @; m# w
requestVariant[0].vt = VT_BSTR;( \4 w8 l" p: n8 p$ L% L
requestVariant[0].bstrVal = itemStr;0 z5 x" h7 r7 O: k5 t
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topicStr = SysAllocString((WCHAR *) L"system"); * \) M& `9 E9 h t3 | VariantInit(&requestVariant[1]); " z) ]2 E( s w requestVariant[1].vt = VT_BSTR;( c O2 y2 |/ Y
requestVariant[1].bstrVal = topicStr;, q- x5 L* ~) X6 Z U
9 u7 k; ^" l+ B& y' h) g6 w// Set the DISPPARAMS structure that holds the variant.1 ]0 O8 `) j; I5 _4 {( O2 g