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:- W9 j o* w4 _. P& v
Name = (WCHAR *) L"Poke";5 M% [& X) ^- ^! ? s% f8 k$ q
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hr = m_pDisp->GetIDsOfNames ( . Y8 h% C' l# t) \6 W: R0 B IID_NULL, // reserved5 i! j( w4 r& E G0 _
&Name, // Array of names to get IDs for- C2 V# N; k$ e; l, ]/ `
1, // # of names in the array( M( L/ ^' S4 o8 y4 ~) O
LOCALE_SYSTEM_DEFAULT, // System locale5 c+ C, v; i# P7 w* l$ t) }6 N
&pokeID); // Array of IDs to fill on output . Z' A; r0 @! R7 s8 B! D* ` : P7 t2 ]% D, I4 ~ if (hr) ! y, O/ L: G$ }- T j { 3 [0 ], n$ a, r' } o2 P MessageBox ("Get Poke Unsuccessful");+ u% w% X2 m& V0 u, g
return; : u2 {( G6 N, c }& A4 u! a+ ~( Z* T4 {# E+ Q9 l
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/**************************传递数据给extend**************************************/ 7 G, r' J7 `2 K) J K( { pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 2 ~! m1 h# N1 T' N 2 _3 W4 _" _9 N* C) Y
valueStr = SysAllocString((WCHAR *) L"1232");& G1 ~! i: u, K1 w$ Y1 A
VariantInit(&pokeVariant[0]); ( P* Z/ l7 x4 X1 @9 J pokeVariant[0].vt = VT_BSTR;; I! ~( Y% l$ q3 d" b0 C$ C% c
pokeVariant[0].bstrVal = valueStr;/ b/ S2 V3 o) |+ W/ Y5 Z
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");& l/ d$ U4 N3 p0 ~* i s
VariantInit(&pokeVariant[1]); ) L, Z+ I& @5 v$ E: L' m. Q- g/ w- p pokeVariant[1].vt = VT_BSTR; : {! r0 ^( v; h' K pokeVariant[1].bstrVal = itemStr; : k+ c/ c% T" j5 \+ l' {1 x: q5 b" G& B. l7 W" d
topicStr = SysAllocString((WCHAR *) L"system"); + H) `- W) |# a3 k; J9 X: C1 Z VariantInit(&pokeVariant[2]); $ A Z) E6 i; A3 A7 r
pokeVariant[2].vt = VT_BSTR;- ~. V" |+ G* f+ ^
pokeVariant[2].bstrVal = topicStr; 9 x V" e% K8 _: k, U1 ~0 Q' J, q6 F/ Z S- W4 n9 w u1 q6 O
// Set the DISPPARAMS structure that holds the variant. 0 a& R* s; K w6 c 5 a2 b8 t& L' [ O dp.rgvarg = pokeVariant;1 O2 ~8 G- t' W7 C7 A8 c2 y
dp.cArgs = 3;3 X3 t, Z! F* |$ C$ @
dp.rgdispidNamedArgs = NULL;: E4 Y5 @+ f8 p& t3 `% d
dp.cNamedArgs = 0; , V1 U2 D' B/ O0 H) | R' }% B- L* S9 U. s1 @, q, a3 @
// Call IDispatch::Invoke()& Z+ J, {% r3 f' d
: n' s9 u( K0 W/ B$ i hr = m_pDisp->Invoke(1 A0 j5 g* j b
pokeID, ( B& A4 N! _7 G& f, p& O9 K1 Q IID_NULL, 6 R; v/ a- I5 z' ` LOCALE_SYSTEM_DEFAULT, $ v5 L. d0 O! l7 b7 }6 f DISPATCH_METHOD, ; c, r( W9 m4 O* z2 H7 ] &dp, 0 q( b/ v$ K( D NULL,' d \! k* S/ f- S( P
&ei," R1 G( E5 j4 x9 G& Y
&uiErr); - ?7 J. e9 L$ m* X8 R# e( \+ b4 H3 k8 Y3 [( D' G
SysFreeString(topicStr); " ^! u a6 r& ?# } SysFreeString(itemStr);& L$ k- W: w6 J3 e
SysFreeString(valueStr); 8 u6 C [( o: f+ E( Y1 Z( e- E% h0 \! v. ^1 Q( \" u
现在这个程序可以实现将1232这个数据发送到extend,extend有一个对话框弹出并出现1232这个数据,不知道这个对话框为什么会弹出并显示这个数据??? # I0 _' n7 f \& e& ?9 m0 |此外我希望将这个数据赋给extend程序里面的一个变量,请问如何实现????+ x5 U& _. i* N1 t u. R3 T
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2.这是request的程序 3 j5 C# g% C. u2 Q5 F// Request a value from Extend' F* ]( v% S! V( x, Q
// $ G7 `) E5 d6 ?// Initialize the variant that will hold the BSTR. Set the variant's : z1 @; L: E& g5 ]// type flag to indicate the fact that this variant holds a BSTR. Place the 9 O! Y; O$ M7 x: U" \// BSTR into the variant structure. 9 f( c- O/ F7 Z n5 _9 ~& _" v# y) Y) h/ L$ ?" p3 B! h+ i
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);7 |! ~# `0 ^2 b
% Y. ]' G1 E6 N% `% u itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ) W4 v* X6 h; C2 U% E VariantInit(&requestVariant[0]); . _6 `9 x/ v; v; ` s3 d- [6 [
requestVariant[0].vt = VT_BSTR;' R) b, Z0 s1 ~9 H. N% e0 m
requestVariant[0].bstrVal = itemStr;' ?+ ^7 W: _; j, M7 B/ e) H& f: S
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topicStr = SysAllocString((WCHAR *) L"system");4 a: m# p X) u ~
VariantInit(&requestVariant[1]); + L4 a/ g6 m9 z* x% J/ h' U: Z
requestVariant[1].vt = VT_BSTR;; ^( t0 U- D* f, D5 G. ~' j
requestVariant[1].bstrVal = topicStr; ; E% s8 ~- ?+ T% b/ R& R# m 5 l& V; M1 V; |9 T+ \ s// Set the DISPPARAMS structure that holds the variant.# P# {( P, L! {5 n( ~; p
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dp2.rgvarg = requestVariant; 1 e7 |! c8 I; p: \# n9 ? dp2.cArgs = 2; ! A* `) v9 {7 k7 J" P dp2.rgdispidNamedArgs = NULL; * u+ g+ |0 C4 O8 v: ]3 B8 f dp2.cNamedArgs = 0;" x) \% [) z. _$ h
/ D. x0 B, g6 v$ ]3 ~7 p/ X var.vt = VT_EMPTY; ( o) w# M+ V# t0 | p; {& @ ' I7 j4 W. U3 t2 p$ O( C5 U/ B// Call IDispatch::Invoke() * ]! W0 o9 q5 K7 l- ^ / V+ i, L! n6 T) s- s( g hr = m_pDisp->Invoke( 1 N" m" I8 K* n4 V requestID, 3 `/ C: g- f0 \ IID_NULL,* j1 L# P$ B* k" G8 ?- w0 I* v# Q% z
LOCALE_SYSTEM_DEFAULT, - C j& y0 [, x* A8 M% a6 c DISPATCH_METHOD, 0 `( k/ p {' [4 Z. s &dp2, ( h. `% b' E1 T6 X% {( B' ? &var, ' ^2 F4 [/ x: Q! x! H0 g &ei,: U5 L* S4 L7 O0 J8 t
&uiErr);" |1 e; Q+ q; d! F2 s1 N$ R
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SysFreeString(topicStr); * Y# ~0 }) M4 O SysFreeString(itemStr); 4 f+ |- w" g( Z# ]+ ?5 P请问该程序是获得extend里面的哪个值?9 o. `2 |! p% _( `
如果我希望获得extend程序里面的某个变量的数值,那个c++程序应该如何实现????