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:# n' R; Z2 W. `" f/ V7 M
Name = (WCHAR *) L"Poke"; # U6 {, h& f/ B5 e! N + X5 `; b& U" U, J8 I8 X9 a
hr = m_pDisp->GetIDsOfNames (5 A! P8 N* T/ V2 w" H" Y. N' N
IID_NULL, // reserved . A% ]1 m5 h2 Y( P &Name, // Array of names to get IDs for & h) A0 b; B; Q! ?. M; a 1, // # of names in the array$ y( k. `2 o& P" y X, P) L
LOCALE_SYSTEM_DEFAULT, // System locale & N% M7 `1 D/ t" B* `; O &pokeID); // Array of IDs to fill on output S: Z2 L( p* ]! A
% k4 J% f5 F1 V if (hr)8 t' Z( S+ D9 D9 S: C3 Z$ e
{ ; ~1 D) Q2 b5 ^3 F$ A& e MessageBox ("Get Poke Unsuccessful"); ' {7 e2 D3 \( k: Y& F return; : d G9 b# m7 l" U% ^5 T }6 l' d D0 C5 H& E. J0 O( E/ l
8 |# R6 B7 ^" J6 @+ n! b$ G/**************************传递数据给extend**************************************/ / O1 N0 P" O: F( c$ } pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);; g9 m5 P X* Q( v; e B: x
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valueStr = SysAllocString((WCHAR *) L"1232");' E/ \2 `& r0 P' w
VariantInit(&pokeVariant[0]); ( [" A1 I/ L* _3 F0 a7 A
pokeVariant[0].vt = VT_BSTR; ' ~, P' `9 Y- t7 M pokeVariant[0].bstrVal = valueStr;% i6 a1 Y$ a( }0 C
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 2 E1 G1 U7 @0 ] { VariantInit(&pokeVariant[1]); 0 c H5 E1 }( n
pokeVariant[1].vt = VT_BSTR; S2 T9 F& ~8 j. N# H
pokeVariant[1].bstrVal = itemStr; 5 P3 U" f! q* O: `; h8 s: y5 C' S% \$ L8 @% V
topicStr = SysAllocString((WCHAR *) L"system"); 6 L" L6 T. \) T, [- p VariantInit(&pokeVariant[2]); ) w' H9 |5 Z! B* x1 j6 `
pokeVariant[2].vt = VT_BSTR; ' n: f: p& \* d1 N* G: H pokeVariant[2].bstrVal = topicStr;4 o7 T! |; o" S$ T
9 Z& _+ A6 {& i5 k// Set the DISPPARAMS structure that holds the variant. 0 I) O h9 n) s1 c/ e 6 \% y+ J! Z5 P* r# U2 Z2 L dp.rgvarg = pokeVariant;* W$ I9 s& c2 e( V9 e
dp.cArgs = 3;4 }$ p0 t% ]- C& W
dp.rgdispidNamedArgs = NULL; 3 e$ J7 @. f6 V2 n+ [ dp.cNamedArgs = 0; 3 M! B8 o2 | c' c ; m+ ~2 d5 v+ K& k2 o& u' w M// Call IDispatch::Invoke()! b# Z" @( {7 s% S. x4 q: b8 u
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hr = m_pDisp->Invoke(' x0 m: @' U- n0 K- y# V
pokeID, 3 I2 T$ H$ Y$ G0 f: G4 C# ?- {! ~ IID_NULL, , l) K7 S# w1 T- p. l5 B LOCALE_SYSTEM_DEFAULT,( V, G7 w9 B+ E9 S2 p
DISPATCH_METHOD, @$ c7 ]7 r, v1 l7 Q' ^# s, ` &dp, 2 m: v4 Q+ a, F NULL,- _( p1 E' ]9 w2 a8 R
&ei, $ [9 I; O) ^& N5 Q6 R% S &uiErr); 4 D. B4 P' ^5 b* J8 C/ M. D+ Y( U$ C9 l$ f
SysFreeString(topicStr); * o5 Y( ?! c- {* n$ n4 i* R; T* N SysFreeString(itemStr);( Z. u; V8 c; K7 s1 \3 d
SysFreeString(valueStr); ( P W4 t; {; S, |" D- L- {! F n$ j9 j: {. V c: v5 \& Q, L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??? - ^( |) \, L/ F% ?6 l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????0 G* i x# F+ \" n9 a$ N
; Z5 c( f$ i3 {1 I# R % S' T0 N8 |# Q' M3 P, g( d6 w2.这是request的程序7 ^4 j `1 N2 ^3 o8 r) Y# b
// Request a value from Extend ( M g" e0 N) E& w//1 K% N8 o! ]! d Q; \ G5 X$ n
// Initialize the variant that will hold the BSTR. Set the variant's ( k9 c5 |0 Q m9 T) x// type flag to indicate the fact that this variant holds a BSTR. Place the 0 W, p1 N4 D' O1 X0 L: f// BSTR into the variant structure. " r% i' q/ s8 k7 U7 H& ?3 M, A3 A/ J8 N, T" ~, d
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);' s/ U _$ i) B, s( _1 g
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");9 Q: S: Y$ A5 s6 B- ]% y
VariantInit(&requestVariant[0]); / r. ^. Q9 B9 N; g
requestVariant[0].vt = VT_BSTR;& V8 D. o$ j D/ o5 X, @2 W
requestVariant[0].bstrVal = itemStr; 9 Z% S+ ], F" c4 @4 e6 n( S T$ n5 \6 V# T S: i
topicStr = SysAllocString((WCHAR *) L"system");0 D8 G* ~! M V2 L) A' E9 W
VariantInit(&requestVariant[1]); + k& G, D0 n7 N0 _ requestVariant[1].vt = VT_BSTR;% b4 a+ I$ a1 z' I A. r$ s- y
requestVariant[1].bstrVal = topicStr; % R, J* g! |3 M3 a1 m& K& {) q : q! F. Q" ~4 p8 w// Set the DISPPARAMS structure that holds the variant. Q, _9 l8 o0 x 1 ^2 C7 z7 f8 v6 Y1 v dp2.rgvarg = requestVariant; 4 H2 V% X" v) C0 D4 X" l1 P dp2.cArgs = 2;2 F1 d, T; Z) N& r$ w" t7 l
dp2.rgdispidNamedArgs = NULL;+ M! V) C7 v- Q8 c5 V
dp2.cNamedArgs = 0; 7 E, F2 T* S8 [% y7 x$ j8 q; v* X
var.vt = VT_EMPTY; 9 I' `, q2 x. h+ ?3 p' c- K. D8 W/ K! j
// Call IDispatch::Invoke()+ v5 v8 {, V4 F4 y9 e8 s
# k) P* _7 i& ] f3 N7 S hr = m_pDisp->Invoke(1 |" Y, n- y: A! a% V2 U5 L7 }! F) L
requestID,( K9 ]/ J @) O- r
IID_NULL,# `) @- l4 J, d
LOCALE_SYSTEM_DEFAULT,* w. y ?# K' R. S3 |" V
DISPATCH_METHOD, t4 k0 r' D' v5 x &dp2, 6 J( e, j/ e. ]9 S; g &var, / x& G6 g8 M {( S &ei, 5 x* e) v3 c4 a8 R v8 g &uiErr);( f, f# T9 E7 D7 v4 ]; U' q
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SysFreeString(topicStr);& Z3 a8 _( O3 N5 [
SysFreeString(itemStr); 4 x7 B$ z% \; E) |& ~8 l, l请问该程序是获得extend里面的哪个值? # n& p M. y% e. d6 @7 w8 B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????