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:5 j! a2 Q# ]: c9 Q: L, i
Name = (WCHAR *) L"Poke"; & P. e2 W5 l4 S3 o$ x$ J ; B* D" G6 u! ?9 B hr = m_pDisp->GetIDsOfNames ($ c3 e( }2 ^8 z: r8 ]0 l9 G0 a
IID_NULL, // reserved2 r0 Q7 y6 A5 _5 _% v9 b0 A) H
&Name, // Array of names to get IDs for$ F0 L. }+ S* O8 p
1, // # of names in the array/ `+ p! d" p( K, u! @, N# e; P7 D
LOCALE_SYSTEM_DEFAULT, // System locale8 [# V3 a' }: d) z
&pokeID); // Array of IDs to fill on output 7 t+ M% ^9 W* L: S% n3 {" u " a$ D8 k5 Q s7 d6 o: \7 b k B if (hr) 3 Y1 l2 U! J, \' L# _ { 2 p8 p0 W5 G$ ^& `- v MessageBox ("Get Poke Unsuccessful"); / e0 i; @4 Z- P, _( ]% |. T return; 0 F! `# t0 _; I0 J/ N2 n! `" J. l# v, L }, {8 L. e5 |! [- E" g
8 a! t: `* e6 H% O* j, `/**************************传递数据给extend**************************************/ 8 |( \8 [4 A; T4 N3 o3 l pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);/ I/ C5 E6 G; ]" s8 x
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valueStr = SysAllocString((WCHAR *) L"1232"); , J4 |$ `- B% u( [' H+ m; c VariantInit(&pokeVariant[0]); " I" F; S; n( f* E% L( ~ pokeVariant[0].vt = VT_BSTR;- m" Z; }% v' ~4 m" j$ E2 \
pokeVariant[0].bstrVal = valueStr; 1 n3 c4 ^' { @# X6 {: S8 g# J " N% U1 G' t8 _8 k( l! `* ~, h itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ! \: c9 U4 S; c/ B VariantInit(&pokeVariant[1]); ) v5 S- G1 Q0 Q
pokeVariant[1].vt = VT_BSTR;& s; G" |& c7 Y. x) D
pokeVariant[1].bstrVal = itemStr;7 j$ H6 _& ^) X% r
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topicStr = SysAllocString((WCHAR *) L"system");" `0 G/ I$ Z/ P9 G% w1 D. G/ |7 M2 A
VariantInit(&pokeVariant[2]); 7 {- o4 n3 I" l# V4 a0 l+ u& x
pokeVariant[2].vt = VT_BSTR; / ~% y& u6 k. t3 |; M4 V; a8 z pokeVariant[2].bstrVal = topicStr;4 [' k( s O/ z& J' ^1 l
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// Set the DISPPARAMS structure that holds the variant." F" u& e1 ]' f+ M
1 Z! P. a* c6 @$ M dp.rgvarg = pokeVariant;* Y, j' p ~! \. V2 {/ n
dp.cArgs = 3;2 [+ g) V! n; G0 `
dp.rgdispidNamedArgs = NULL;2 G. v% R6 I# X: ~$ T# d
dp.cNamedArgs = 0; 5 j8 |" X( M, @+ ^& }0 f. |6 I5 | V3 f 8 g2 w0 `) f# S$ f( `- f// Call IDispatch::Invoke()" Y9 \3 j6 d% J/ S; E
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hr = m_pDisp->Invoke(. i$ y- }) k; s
pokeID, 0 M3 P0 v. `; t3 ?' Y IID_NULL,8 Q1 r# ]+ Q6 g6 Y4 p% s. o9 q
LOCALE_SYSTEM_DEFAULT, ' [( F2 @" t+ m% S8 Q7 f& T+ K n DISPATCH_METHOD, % H& ~1 k9 O& c) C! i &dp, 3 G' p) r9 N2 y+ c" e( | NULL,7 L. E5 K6 Y1 N$ s5 W# H* k0 f8 N
&ei,# W7 @" B6 o$ b7 b* a: S0 X8 [
&uiErr); 8 G, ?' P/ U# K6 U% K! I. V& l; E% I Q+ C# K
SysFreeString(topicStr);% J8 e8 F# v# k$ M; R3 l4 g
SysFreeString(itemStr);" z! A6 w' n K9 ]
SysFreeString(valueStr);( m; o, k L- ~" F6 K2 d# q
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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???, U( P: a. G. y; S3 Q, A
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????: `/ M7 }, c! s
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' d. q' G8 W; l2.这是request的程序 3 h u: v3 d. M z% R8 g+ y) w% {// Request a value from Extend $ @# x3 y. q* _% ^// 5 m% b* E' C! r# L7 K" F// Initialize the variant that will hold the BSTR. Set the variant's, m- y1 w/ ^4 Z5 D
// type flag to indicate the fact that this variant holds a BSTR. Place the/ Q' \# y6 K1 l' ^' L! n; M2 ~
// BSTR into the variant structure. # e8 [7 }1 R8 M6 W# n, g2 `( V$ L: z
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 2 k3 G7 A m! ~6 V- R / P9 m+ w9 q. j
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); . Z2 D" N, C$ s% e* u VariantInit(&requestVariant[0]); ! `8 D8 D$ `! q, t requestVariant[0].vt = VT_BSTR;* \8 _7 w+ E0 \: U4 q& D
requestVariant[0].bstrVal = itemStr;, ~) S. n) M$ P* @' c. z3 ^1 }
; }- g9 u& w J* J4 o6 q topicStr = SysAllocString((WCHAR *) L"system");3 h: {4 d6 g4 \% v
VariantInit(&requestVariant[1]); ' t1 l# f9 N5 w/ x requestVariant[1].vt = VT_BSTR; , o6 ]" `' x6 V0 B5 | requestVariant[1].bstrVal = topicStr; 9 M6 L& G$ n' h: I; D" x n2 e* w" O. m
// Set the DISPPARAMS structure that holds the variant.( Z, A' H/ m- T' }
, L9 V* G' W& s5 F8 a dp2.rgvarg = requestVariant; ! N& W- q. W3 {0 G dp2.cArgs = 2; / L1 t; W+ @% z6 t7 ]$ m: a3 h0 w dp2.rgdispidNamedArgs = NULL; $ ]" k: E& b# {% K8 ^ dp2.cNamedArgs = 0; 4 e, ] s. K3 v4 e# D* ]4 ^- U4 m+ f/ S/ o* ^. u m4 k
var.vt = VT_EMPTY; ! S+ q2 Z! u" a* D3 H, a ' C4 g3 x) k7 r* t// Call IDispatch::Invoke() 3 w2 l$ o: I7 @# B7 l, U: E4 {/ _$ z8 v; R
hr = m_pDisp->Invoke(2 b0 D) D0 u" e/ i
requestID, 2 ]' V# J& d# H IID_NULL,+ O2 Y4 k* D6 h
LOCALE_SYSTEM_DEFAULT, / H c1 i" p, h0 i; q DISPATCH_METHOD, 5 c) f' B5 {& N& g &dp2,/ g9 U$ ^3 C& [+ E' W( S
&var, 0 o/ l6 n! n2 e: } &ei, 2 k2 |! K% Y3 Q1 _ &uiErr);1 ~, n5 i" O8 ?
: ]- y& s0 c4 o0 O SysFreeString(topicStr); , v2 D$ R" E9 [- D* {; j- Z SysFreeString(itemStr); - \& h* ?8 f/ [2 w d7 j6 i+ d请问该程序是获得extend里面的哪个值?5 V+ ` c' F0 _& h. v0 C& {4 {
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????