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:, R+ W2 S- [, H, n! y0 q" r
Name = (WCHAR *) L"Poke";# v: A" x: ?5 G% ~- v
0 v, H! e: e' [( A# b hr = m_pDisp->GetIDsOfNames ( ! R4 c, W' `+ h# |2 ~ IID_NULL, // reserved: L9 A- Z/ i( w8 `: R: G: Q8 C
&Name, // Array of names to get IDs for6 I& ~1 g0 L- Z, j4 ]4 H% }6 ~7 H
1, // # of names in the array, S/ r9 w: E- C, ^# }
LOCALE_SYSTEM_DEFAULT, // System locale * }$ q* Y, S' U5 @% |( [9 }1 Q &pokeID); // Array of IDs to fill on output" t- f( O4 u9 Y9 i
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if (hr) 0 Z% @! `2 k% @0 }# K { b( J$ e: O1 Z9 `, \
MessageBox ("Get Poke Unsuccessful");6 N( n# ?. o7 Q) v7 y
return; 4 r! L' Y' k* U/ ?7 g7 K9 h+ N } ; I* {7 d& }, p! O* U! e) D+ K/ _* v7 Q5 H! }+ w% b$ g
/**************************传递数据给extend**************************************/ ; z; R# v% m0 y pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);5 d; ~7 Z' ^6 E/ y" {! A
g0 U: ]$ ]4 q7 J+ B valueStr = SysAllocString((WCHAR *) L"1232"); * x: |' j! Z2 c4 j6 _! T \ VariantInit(&pokeVariant[0]); 6 N% ?: d. f4 W7 Y: L2 D7 c
pokeVariant[0].vt = VT_BSTR;/ A4 S% C: J% i$ c! V$ u; J* K
pokeVariant[0].bstrVal = valueStr;- H7 o2 A9 r6 A* g: P( o7 A
7 d! g1 { x$ X4 ] itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); / ]. s* ]. w# f2 A VariantInit(&pokeVariant[1]); 6 T( S6 \3 f6 L: o
pokeVariant[1].vt = VT_BSTR; / F' \' t) z0 H! L pokeVariant[1].bstrVal = itemStr;) w* T& B, w4 {( U+ _( S* b+ M
' }( H4 E( y& O! G& V& X1 J8 M: i1 z topicStr = SysAllocString((WCHAR *) L"system"); 8 O6 c2 S) Y! o9 r VariantInit(&pokeVariant[2]); % x$ r$ C q5 n7 |5 j$ B' B( { pokeVariant[2].vt = VT_BSTR;3 B3 D: X9 E2 m% I/ v* j# ]
pokeVariant[2].bstrVal = topicStr;; u5 x! ~. V3 y2 p6 F( p0 x9 L
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// Set the DISPPARAMS structure that holds the variant. - ~! [7 l( ]8 g+ Q1 w9 n6 R& ?: s3 H' l' V$ R* k$ h) b
dp.rgvarg = pokeVariant; ( [' I- z& \% Y8 f) G dp.cArgs = 3;) p5 n. w1 C! V2 @4 u! P
dp.rgdispidNamedArgs = NULL;0 N7 Y' H1 O9 L) V* O- G$ T v
dp.cNamedArgs = 0; ! g$ {( k; `! J/ z . C; _2 J. A* R5 M9 l+ Z9 y; `// Call IDispatch::Invoke() ' B0 L1 K* Y5 S 5 U# ~+ S) l* ^* R3 S7 v hr = m_pDisp->Invoke() G3 C; k, ]0 T. c( o
pokeID,1 e q) |. c: x" g- ^% U, ]
IID_NULL, Q7 J2 z8 m1 b6 j# r0 E8 i LOCALE_SYSTEM_DEFAULT,. f. c" C9 s1 a7 x' X0 E! g/ o
DISPATCH_METHOD,2 w+ r5 Q4 _, }, e- l8 {
&dp, ; s+ x- i- f; O Q7 ~ NULL, ) P! J$ C1 D; H1 e4 } &ei, 0 b) R v$ O" b$ N &uiErr);% Q) y7 X! N5 Z/ E: M/ b
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SysFreeString(topicStr); : R# Y; K3 z& q SysFreeString(itemStr); ; Q+ c" f% k; b0 x$ h; G SysFreeString(valueStr);% u% h0 N$ ]4 t3 f
: o8 x* n& _( ?. H( A0 w3 a! c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??? `6 e5 T( k. o3 N
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????3 x" E8 ^, b( j: w( U- z
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2.这是request的程序 4 H! ?2 \2 P. A# z \4 I4 m! m// Request a value from Extend7 u& c$ b. R$ e3 [. t
//# B1 G, Q9 U0 w
// Initialize the variant that will hold the BSTR. Set the variant's ) L+ ]+ X" ^) N% @. f8 D// type flag to indicate the fact that this variant holds a BSTR. Place the ) e0 j9 O* a+ h/ f6 Y! D8 ~- g// BSTR into the variant structure. . t4 D2 B% U+ q6 ?# t2 m+ L. E, [& l: j8 m: I8 D+ n
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 6 @; I, b' @9 H. {( n5 Z6 Z * L* l& r4 y5 m itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");) }5 B6 m n% Q K
VariantInit(&requestVariant[0]); * N0 ~* o2 `( `8 S! U8 c: E$ x5 \, e requestVariant[0].vt = VT_BSTR; / n3 J" p+ N6 C$ i requestVariant[0].bstrVal = itemStr; k: A' U4 B3 E6 j) G7 \4 n0 M2 B0 w4 [
topicStr = SysAllocString((WCHAR *) L"system");; n' P/ ]; K1 p- [
VariantInit(&requestVariant[1]); 7 A( S% J7 H% R" g" @9 k
requestVariant[1].vt = VT_BSTR; : t* I0 d# d t4 U2 B' t% a+ Y requestVariant[1].bstrVal = topicStr;, T8 X( G# U9 u
. Q5 r& O5 x+ r& |$ U( q. Y// Set the DISPPARAMS structure that holds the variant.$ _3 h9 b5 K+ R7 z$ z
/ c: A! @6 h( ~; F' g* P' I a dp2.rgvarg = requestVariant;$ j$ n: N; Z% C; w7 B
dp2.cArgs = 2; 3 k) l' h% [' T" w dp2.rgdispidNamedArgs = NULL; ) e/ @4 f6 I* N3 m1 L% z dp2.cNamedArgs = 0;# e6 {( b% \6 j- m7 X: T
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var.vt = VT_EMPTY; + M4 `5 a. A+ R' b# V3 W _) ~/ m9 ?5 s+ s
// Call IDispatch::Invoke() 1 ]+ ~$ [ \9 M0 D7 S9 F, \7 O6 Q5 m* f+ P
hr = m_pDisp->Invoke(1 a; L$ N+ x0 _
requestID,! \" C# W; B7 K& |7 O. H
IID_NULL, 6 R* c8 ~7 i2 @1 | e+ Q LOCALE_SYSTEM_DEFAULT, + A" S5 [& ~, }2 _ DISPATCH_METHOD, 8 ~( B& P6 o( m( I &dp2, 4 _! G9 }) y1 x# e4 e* n& q &var," Q& J+ p6 G9 A5 }
&ei, |& v- @! R9 V6 P# t4 x+ M
&uiErr); . E& W/ z; D% @9 g7 ^2 T & X- \; l! h# _# n, ]0 D SysFreeString(topicStr);2 x0 c3 m5 l+ C- \( e1 Y6 e
SysFreeString(itemStr); 4 k" s' \! J6 O' Q ]请问该程序是获得extend里面的哪个值?) T8 ^) Q7 ?! g2 |1 E2 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????