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:3 P+ @# f; D$ ?5 S. a% d
Name = (WCHAR *) L"Poke"; T& ~1 s* s! d+ g6 x9 T2 ?: u% W
: ~6 Y% r4 ?& n9 P hr = m_pDisp->GetIDsOfNames ( ( y, b: O, ?% k [4 b$ l. B* [ IID_NULL, // reserved 8 m4 L, V# m0 y5 h8 d& j &Name, // Array of names to get IDs for ! ]0 r* s, m5 X1 m6 b% T0 s 1, // # of names in the array " j. v+ y. S7 p8 }& Z1 Q0 N }& h LOCALE_SYSTEM_DEFAULT, // System locale 6 Z# ^2 ]# {! P: Q2 H &pokeID); // Array of IDs to fill on output$ Z/ O8 V6 g2 i! c
' F( W+ _/ l* Q! d( y if (hr). ~8 a" V/ x3 q# E5 O$ y0 T
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MessageBox ("Get Poke Unsuccessful"); / C# A: G' q v& y return; + r m' o+ z% c% q/ Z" G8 F* P } o3 _/ W7 H6 n# @5 P; j' T; k/ } 6 e) \/ K; ~; x6 r" [) J4 J A0 r/**************************传递数据给extend**************************************/ ; z6 P+ M) W6 g pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 8 J$ r3 `" Z+ N* l0 o# O 3 V$ L g+ a" x! P4 \; K6 v
valueStr = SysAllocString((WCHAR *) L"1232"); , ~/ d8 o7 ]( ]4 A: Q VariantInit(&pokeVariant[0]); # f: k; X: B2 ~* i
pokeVariant[0].vt = VT_BSTR; ) u7 C D+ p- T7 X- V2 {% S4 g pokeVariant[0].bstrVal = valueStr;! }/ [3 i1 n- {( z `% Y( p& h. r
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");# v6 F- y$ Y+ t/ E$ f* c4 t3 E! K$ I
VariantInit(&pokeVariant[1]); ' l4 X0 d/ d3 j; i5 f$ w pokeVariant[1].vt = VT_BSTR;6 b, b' b: E# w. r# g
pokeVariant[1].bstrVal = itemStr;" {* ~" x( d! C+ ?9 `" D+ U
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topicStr = SysAllocString((WCHAR *) L"system");: u+ Q+ B n7 @
VariantInit(&pokeVariant[2]); : K, ]3 ] G+ F8 m
pokeVariant[2].vt = VT_BSTR; . `$ y9 {- y% V pokeVariant[2].bstrVal = topicStr;4 O8 x _, Z! |" l% \# p
7 G5 A+ |8 M2 q+ p! g ?8 L) o// Set the DISPPARAMS structure that holds the variant.( N3 {4 O+ T3 F! j2 b* C
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dp.rgvarg = pokeVariant;1 W6 Q. G( R) s. R) l& p
dp.cArgs = 3; + T" |0 n. t# M c3 E dp.rgdispidNamedArgs = NULL; 3 R- ~) H1 v( S% S# E dp.cNamedArgs = 0;& Z; J# E4 b) m
' Y# `& Z; q. m// Call IDispatch::Invoke()" s7 }3 E; y+ X \) l9 z# y
0 I; c" j( o2 ]8 ~ D2 f% @ hr = m_pDisp->Invoke(% u5 X. f H; u' b, f
pokeID, : ^( o4 b* X, d+ e/ B+ y% E+ @7 h IID_NULL,: l( ~% G% b' L; Z9 a
LOCALE_SYSTEM_DEFAULT, 9 K7 G4 E/ K0 K DISPATCH_METHOD,2 |2 O7 c6 w: J* j6 z
&dp,+ _; V, A( Z! O3 S4 Z, b
NULL,9 p. j/ Q( P: r) Z( r
&ei, - g. h! g5 m {+ Z &uiErr); 5 k3 V/ k8 a! q2 Z) E% G" f" d- m* w$ p# A5 A* U4 y5 F0 f
SysFreeString(topicStr);, @0 R8 P. q: X, m9 ^4 q) a; C! N
SysFreeString(itemStr); 4 Y1 {3 Z9 E$ L1 |3 A3 U, s1 `( q SysFreeString(valueStr);7 G% n4 ^, _4 R9 X/ K9 Q$ c
' n8 ?- L* ~6 P3 M# ]2.这是request的程序 ' \' R N# d2 ]* P8 W: ~// Request a value from Extend. R+ a/ \2 ~/ m1 u: C r
//; h1 }8 Q2 F- l; x% v
// Initialize the variant that will hold the BSTR. Set the variant's; U3 O7 j" `9 J: s# j- T3 {. e5 {
// type flag to indicate the fact that this variant holds a BSTR. Place the * D/ A( |7 u( d+ w( q// BSTR into the variant structure.% A4 r4 C n1 J- p* q* ^% O
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);, l% }) I2 {% U% }1 f r
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); g' R; Q C$ ^
VariantInit(&requestVariant[0]); 2 B2 P# n, S5 g
requestVariant[0].vt = VT_BSTR; 3 e! Q _3 s# z( b$ ? requestVariant[0].bstrVal = itemStr;8 W# c- T N7 M4 l8 x: c& D8 S
% K9 t: t- Z7 C# n" K, F& T0 j topicStr = SysAllocString((WCHAR *) L"system");1 W0 \2 e s: p) D! i
VariantInit(&requestVariant[1]); 3 y5 x- Q& N) ]2 R; l requestVariant[1].vt = VT_BSTR; ; \' x8 k& ?8 ^, |. l( H2 _! V# s N requestVariant[1].bstrVal = topicStr;) E% R8 o, [) X N0 S2 ^' ?" H7 D/ `
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// Set the DISPPARAMS structure that holds the variant.- h7 x* d1 s0 H8 G0 c; [. v3 |
E, ?. A2 `; M: d# p; ` dp2.rgvarg = requestVariant; 5 |- j) o( j( Y dp2.cArgs = 2;+ A- r$ B Q8 }* p5 S# x
dp2.rgdispidNamedArgs = NULL; 5 q; Y T: U6 a% t d7 |0 t M; ~ dp2.cNamedArgs = 0;+ s1 c& \( G; [+ q3 h* b