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: ( @+ M5 V! r7 C; nName = (WCHAR *) L"Poke"; 8 \6 l4 p* k# I$ k ( h" i/ p' L! Y* O. M8 p- E
hr = m_pDisp->GetIDsOfNames ( . E" P) R4 D: \& X) c# s, s IID_NULL, // reserved/ f) X; ]8 m6 J, H5 g
&Name, // Array of names to get IDs for$ c) d4 j! U* f: p- j3 \. a$ q
1, // # of names in the array 8 W3 a& }7 W6 E1 `8 G; [6 y* b LOCALE_SYSTEM_DEFAULT, // System locale) D- g( G& |- K6 G! v# Z: v; A7 h
&pokeID); // Array of IDs to fill on output . K; b; x, Y2 R0 _! o+ d ) f' E e& }( U, m$ }+ P. T+ P& { if (hr) 0 a- R T, U) q$ B0 X { 3 W6 s8 X* h& A# Z MessageBox ("Get Poke Unsuccessful"); * k5 I3 D3 j. w# I+ b return; ) i- A% n1 p# `8 u- C% x } $ Z i+ {1 j* M+ o$ j # D5 ]: b4 c& F; m6 H/**************************传递数据给extend**************************************/0 X0 f6 s \# y7 A' l5 B9 z7 o: {5 S
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);' B% E( k7 n# U. a1 G J
' d: [$ J: e" t* {( J2 d: I0 g valueStr = SysAllocString((WCHAR *) L"1232"); / Y) T( ?9 t) `* K; {1 W) q x VariantInit(&pokeVariant[0]); & D4 t. b1 z$ `1 O$ s pokeVariant[0].vt = VT_BSTR; $ |$ O U; h3 S0 z# e, S& h2 y* C& A pokeVariant[0].bstrVal = valueStr; & O2 N) ?! i5 V, F, Q2 z; w4 i7 H* V
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");+ G' P2 n: _, ~. w/ G
VariantInit(&pokeVariant[1]); 8 Q: E, K9 Z$ g
pokeVariant[1].vt = VT_BSTR;7 O7 r( I! u7 F: f
pokeVariant[1].bstrVal = itemStr;" h' d' l" a1 d* f+ L
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topicStr = SysAllocString((WCHAR *) L"system"); 6 i" ^8 L# e2 N; K* P- i* U5 ^" _ VariantInit(&pokeVariant[2]); % K* U6 l$ b9 P6 G5 q
pokeVariant[2].vt = VT_BSTR; % I' B) C8 ]4 r/ _+ Y pokeVariant[2].bstrVal = topicStr; , f1 c- r3 s! c: L# G2 B9 D& T; I9 R7 J$ n% g/ I; H" s- G( o6 _
// Set the DISPPARAMS structure that holds the variant./ M" C8 g5 ~1 w9 X4 e6 Q& ?- p
" W% n# r2 v7 z' C$ @
dp.rgvarg = pokeVariant; # P* [" \: `4 Y. |4 E) |; m dp.cArgs = 3;/ W+ a* N4 ^8 `* ?7 S* d4 `
dp.rgdispidNamedArgs = NULL;9 s# z+ |6 S1 F4 o5 s, m3 l2 @1 Y
dp.cNamedArgs = 0; % ~- x$ W& _, X 4 X5 O( c) H6 b3 e- `( @// Call IDispatch::Invoke()/ k, c8 r5 \4 ~# {
F- g3 m. t4 f0 w; u9 S0 Y hr = m_pDisp->Invoke(8 |) V* }; i: G
pokeID,2 r% {. b2 q! J- C, y5 X% t
IID_NULL, " q. M# f% W7 b1 K9 d: J2 R LOCALE_SYSTEM_DEFAULT, 0 M) X; r& ^& c8 V# P- Z DISPATCH_METHOD,( o0 C4 u3 O# V" `% j8 W, x
&dp,- M/ Q2 I" @) K: I3 C$ h$ F
NULL, ' o, n$ ~: N/ T. s# d& ]/ @5 { &ei,: Q8 ?) M& m# E3 @0 k, `
&uiErr);8 T2 A5 U, q c, Z) S5 w
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SysFreeString(topicStr); : r( u! i% z( U9 h4 B SysFreeString(itemStr);. O/ t. Y1 T. C3 C- m
SysFreeString(valueStr); * n% D" q( a- ^7 @ x' K: n0 p6 i n+ H) a$ ~
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??? 8 u8 z/ B: T2 s5 W: ^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 T3 A8 _7 M; W8 }( S% l9 V2 U4 [7 F, e+ Q8 h
1 [& }3 o8 p0 E2.这是request的程序 ( c0 g, r; U% D, t" J// Request a value from Extend1 [- j2 t$ G7 z/ T* r3 ?0 |
// . @5 D$ u# Y; m, x// Initialize the variant that will hold the BSTR. Set the variant's + ~; N# {6 h' P; T! @2 n L// type flag to indicate the fact that this variant holds a BSTR. Place the2 O8 D" C! h* \$ f/ Y) Y0 D5 `6 J
// BSTR into the variant structure.$ E E8 Y. K8 B3 i4 I& M) r
) L& E* t0 s$ Y0 Q* ~& ~# y requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);) ]* x, \. j% V
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); * u5 u0 y& g* S; b4 ?+ L* W VariantInit(&requestVariant[0]); 8 _* F" J2 J8 a. h8 Z2 i! i# I
requestVariant[0].vt = VT_BSTR;7 ~; M4 M3 W) l# f+ B
requestVariant[0].bstrVal = itemStr;% _' Y, \ f4 Z" y% g
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topicStr = SysAllocString((WCHAR *) L"system"); : L$ t+ ]6 _: i% H9 }" L8 x VariantInit(&requestVariant[1]); ! U2 |, J" h' r. a. g$ w6 T requestVariant[1].vt = VT_BSTR;1 w) _2 h9 y2 Q6 ~ S& e, t
requestVariant[1].bstrVal = topicStr; 9 y: ^; U: |0 s7 P, `! w0 F0 E7 s' h. Y& E Y
// Set the DISPPARAMS structure that holds the variant. 5 m- R! M! v& K# f$ y8 X- {2 M; d, X) X" ], U* L0 `
dp2.rgvarg = requestVariant;0 Y9 T* I& i4 Z
dp2.cArgs = 2; " d1 ^( e" P: O, M* u4 J! W( D t dp2.rgdispidNamedArgs = NULL;9 k$ j( }; V: V% o# A& x! C1 C
dp2.cNamedArgs = 0;4 W$ M! s5 f9 K/ S; f
; |2 k6 \, p5 {0 e# O* N% W1 i; h& h var.vt = VT_EMPTY; * g2 W2 C3 M; R6 G2 W# H& G) J2 E" A, h( R, L5 j
// Call IDispatch::Invoke() " H+ N! ]: D$ V4 @7 w0 E% A: O$ M" y e
hr = m_pDisp->Invoke( ) `6 M; V2 C& E ]5 I4 i: a requestID,* U* e/ b7 u+ M3 n: |
IID_NULL, Z' S$ M l5 P" N" v0 ~ LOCALE_SYSTEM_DEFAULT, 4 d5 f+ {3 y# \1 m0 M2 Y% M8 S DISPATCH_METHOD,; @' Q3 D$ K5 P
&dp2,# k' K% S' n" d6 ^0 h" k! {
&var,! v, F3 H( i+ X6 E1 A. d
&ei, & r6 E y( V4 M" k &uiErr); e' f. B( [4 a- [" ^
2 A# x3 [- ?1 W9 Z6 a* W
SysFreeString(topicStr); , I+ P. |* q- T. j# u' z* k SysFreeString(itemStr);4 |& E6 r/ n! O- U5 E5 Q" b
请问该程序是获得extend里面的哪个值?" @* J: \. g1 E8 U
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????