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:4 S: |9 p, F6 b
Name = (WCHAR *) L"Poke"; $ `2 C u" C) S$ Y ' I9 \% D, l# q* z- e- G+ J
hr = m_pDisp->GetIDsOfNames (" Z3 {% W, a3 d Z3 k7 O; W
IID_NULL, // reserved& y0 g7 p$ N' v$ \" f2 c9 J3 H G' o
&Name, // Array of names to get IDs for 4 y# i- r# [5 q 1, // # of names in the array 1 ?9 R$ x" G* \: e# `% F0 J LOCALE_SYSTEM_DEFAULT, // System locale8 A( `5 w- \9 e' \+ H
&pokeID); // Array of IDs to fill on output0 \9 _6 N( a) u. X
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if (hr)8 C3 _( t+ e5 I& x. K0 C, L
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MessageBox ("Get Poke Unsuccessful"); 0 y1 D( H( d7 k/ S return;( K6 C4 D# i, U; ^. K# g( W
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/**************************传递数据给extend**************************************/. K' n2 N7 ^7 d' N G3 V
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); / z4 N3 v5 K5 Z# v; _; m0 r 7 E: O& B8 G6 y. ]2 g: [9 W. Q valueStr = SysAllocString((WCHAR *) L"1232");, g( K4 B: Q6 w% n) n+ i" {6 [
VariantInit(&pokeVariant[0]); 9 I" `5 c) }$ X5 r( H# ? X3 m
pokeVariant[0].vt = VT_BSTR; 3 G2 d" ~3 \/ r( D& x0 | pokeVariant[0].bstrVal = valueStr; $ \4 S d/ y+ x1 |/ o7 x5 H$ v( l1 C. J: I0 W K$ c! K
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");7 Y! G% M- \2 u& L3 X0 \. {: g
VariantInit(&pokeVariant[1]); " o8 z' M4 k y8 n pokeVariant[1].vt = VT_BSTR; 3 T& o$ c" i. a9 [$ a0 K3 q% @ pokeVariant[1].bstrVal = itemStr; 9 T m9 ^- p3 D2 E4 U( e1 H& r0 X* h" a5 @' V+ ]
topicStr = SysAllocString((WCHAR *) L"system"); # U7 l7 u$ n4 Z+ V) o VariantInit(&pokeVariant[2]); 7 ~+ n: V: P I pokeVariant[2].vt = VT_BSTR; # T8 O) x% y: s( L pokeVariant[2].bstrVal = topicStr; ; [8 M$ A$ e U$ v3 }/ C1 W x6 a$ K' {: \, u- Q! v- C4 F
// Set the DISPPARAMS structure that holds the variant.* Z D q+ Z, x; b, |# Y
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dp.rgvarg = pokeVariant;7 G0 l4 E. m1 d
dp.cArgs = 3; : v& e) X. A6 \3 m dp.rgdispidNamedArgs = NULL;9 O! T2 z" q: ~; h- e. L/ A& U
dp.cNamedArgs = 0;: c" `: A8 f; R3 n
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// Call IDispatch::Invoke() * o8 v& I( M' L- _: M+ K& c b ) z* k0 H7 m! ~& N6 m* J hr = m_pDisp->Invoke(. x% K0 A9 W0 y+ K5 Z
pokeID,5 I4 t- i, n/ T# M3 N+ _9 Z
IID_NULL, * h8 u8 _: Z- D. u" w LOCALE_SYSTEM_DEFAULT, * E/ y. r+ b' J DISPATCH_METHOD, + ?9 U& C# s/ n$ d) P &dp, 6 Z5 E7 f; ]/ p/ ^# b# F( a( O, w NULL, # h- ]0 B m2 `$ L- m+ l3 `5 _ &ei,& `5 X! `( i& M! [- v
&uiErr);) E2 H7 d i$ Z/ \3 n7 A1 g' j. G
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SysFreeString(topicStr);$ R7 f2 k0 o8 w y6 ~# y
SysFreeString(itemStr); & f" y* l, w8 j: S8 T SysFreeString(valueStr); ; G/ _' t7 K0 ~) t1 Y+ O . k' O& k4 Q# u7 Z& {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??? ( w9 Q2 J0 ]; z8 D6 k0 ~- }6 B4 R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????6 O% j5 \% ?1 G! G5 ]
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2.这是request的程序: U% e3 t$ T7 G
// Request a value from Extend ' h* B6 P6 a) f5 I: x. b; o// 5 b1 P( Z- k/ I, T- {) Q// Initialize the variant that will hold the BSTR. Set the variant's( u1 }5 i3 O1 C, R1 N) K/ O/ u
// type flag to indicate the fact that this variant holds a BSTR. Place the , Z- G! j3 C: k. q8 w, b! Q// BSTR into the variant structure.5 g: P' C) u! W$ m2 o2 H5 q0 r
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);$ g ? V% L; J- x
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");7 ?+ g: g" r k: A" V2 w
VariantInit(&requestVariant[0]); 3 w }7 O. x- H3 J% b" m
requestVariant[0].vt = VT_BSTR;4 d. a$ ? e9 a/ V
requestVariant[0].bstrVal = itemStr;2 l' ]5 Q, k4 I1 h" b! Q
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topicStr = SysAllocString((WCHAR *) L"system");2 y: a- N5 `* X2 ^
VariantInit(&requestVariant[1]); 0 d& ^+ _+ I5 K1 |' n' V; p
requestVariant[1].vt = VT_BSTR;9 @9 p: W8 J p5 ]: i* v4 _! C
requestVariant[1].bstrVal = topicStr;8 l9 r4 Y7 n6 Y2 n6 k
: J" X! e( ^0 n! I2 W2 b// Set the DISPPARAMS structure that holds the variant.8 Y1 U/ C. i' e* M
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dp2.rgvarg = requestVariant; ! D& _: d4 Z1 C1 O0 c dp2.cArgs = 2;+ A6 d# e6 k" r3 [* Q/ d7 Z1 ^! o
dp2.rgdispidNamedArgs = NULL; - U9 b' Q2 U, m dp2.cNamedArgs = 0;! K' R0 t1 {3 Y9 O
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var.vt = VT_EMPTY; 1 ?0 a4 t7 _$ \# U1 _5 D# q) e+ e 1 O [- C o+ ]8 [// Call IDispatch::Invoke(). A/ ^* J! \7 p' N: ?+ q$ t
5 K. G* B# k4 I( \ hr = m_pDisp->Invoke( 3 d% p k0 Y7 [0 K- \ requestID, 3 m- Q+ y0 u, S) `) x IID_NULL, , v( O/ W8 m1 N* @# k LOCALE_SYSTEM_DEFAULT,3 w! e3 ^! A: n, {- g; N
DISPATCH_METHOD, / R: K6 d; m1 z &dp2, + m. K* Y& Q1 J &var,6 R) ^- K. @7 @& p) d! b2 i! m
&ei, ) {/ C7 r9 K, s9 ~ A5 Y &uiErr); 6 d$ m; a9 M" ^! W$ M0 [" d. E: U; p0 N
SysFreeString(topicStr);( U; `$ ~% w4 v0 }0 M% k
SysFreeString(itemStr);- i3 U) F: ]8 ~: g- l" Z- l
请问该程序是获得extend里面的哪个值?0 |" h) \7 d+ R* ^) l
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????