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:8 L8 e* V9 k& u3 b1 L/ Y0 [9 }
Name = (WCHAR *) L"Poke";" ?* r5 |" d s/ b9 y R3 r
4 o) J6 a& [5 Y* \' w( u- _; g" o) y hr = m_pDisp->GetIDsOfNames ( , H! ~/ p, b4 m, q- P5 H7 Y IID_NULL, // reserved " H! Z5 l1 B( b& D &Name, // Array of names to get IDs for 6 o$ o2 O7 I8 u" T4 w N 1, // # of names in the array ' x1 Y4 }; }0 H% S* I! ?8 B. F* S LOCALE_SYSTEM_DEFAULT, // System locale: \+ g% F, t9 ]# H% N4 q$ H5 ^ S5 P
&pokeID); // Array of IDs to fill on output* T7 v+ Y; ?8 b& I+ H
. m( Z5 P7 }: P4 z1 B& B; c
if (hr) . \$ c! k& k) o4 p2 [3 r0 s% v7 M6 [ {: ]. H& x. x1 U A
MessageBox ("Get Poke Unsuccessful"); - V+ b/ ?) o9 _. E return;) V* W. v* ]8 _9 J
} 7 C4 T2 ]% x5 q8 ^- D2 u1 U 4 l& z. a( a' M/**************************传递数据给extend**************************************/& T: ?$ v- R* T9 d
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); + v, M# C& j# U' t& E! W: a $ T3 g5 T3 i& [2 j! i! [& e' B valueStr = SysAllocString((WCHAR *) L"1232"); ; y8 C h5 `* ~3 W; m VariantInit(&pokeVariant[0]); k/ o8 U* a( o9 v) z# j: L
pokeVariant[0].vt = VT_BSTR; 4 v5 y1 O0 T- [/ x: s pokeVariant[0].bstrVal = valueStr;9 ?/ t- `3 F- s6 F v
. o( r4 j$ {& [. c, V itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); - ]5 o% r! U, h6 M3 @ VariantInit(&pokeVariant[1]); ; ~# D6 [" [- P6 N& l2 Z+ z
pokeVariant[1].vt = VT_BSTR;" v# {: ~. ~, l3 e \( |. |* P
pokeVariant[1].bstrVal = itemStr; ! U F0 q. D- L/ e( R / ^. ~( @1 e: w) K topicStr = SysAllocString((WCHAR *) L"system");( q, j" a6 H' [
VariantInit(&pokeVariant[2]); 6 J% E% `7 N( C; s8 U2 D pokeVariant[2].vt = VT_BSTR;! V" A; M- f, D. b( e
pokeVariant[2].bstrVal = topicStr; * U- H. S! ^. E- b6 Y7 b* f3 S+ J7 s2 h0 [: S6 ?
// Set the DISPPARAMS structure that holds the variant. ; j1 D9 l+ h8 {: W $ `& z6 K9 t$ f" u0 |, ~ dp.rgvarg = pokeVariant; ' O: b$ I7 j8 I dp.cArgs = 3;- J U0 O* K7 K4 `
dp.rgdispidNamedArgs = NULL; 3 }1 M& G. S8 @6 o- s; \ dp.cNamedArgs = 0;$ J8 g# J5 z4 S# b1 w
' m% F2 W! A% ~1 ?8 w# L2 n// Call IDispatch::Invoke() 1 ^( m" W# F0 _1 e4 R5 e9 s5 \" ]% X3 e2 _* x& C9 ^
hr = m_pDisp->Invoke(, z H: d4 a- r& p$ T
pokeID, W7 z* A2 g% i* V8 i- k5 ]
IID_NULL, * G! [# [, l7 G5 z9 ]2 ` LOCALE_SYSTEM_DEFAULT, , ?' p- U2 C" L% M, p* A1 T DISPATCH_METHOD,* i* n9 J+ }6 }$ g( L
&dp, , z8 V: G Q. g# z, y NULL,0 Y5 `0 R3 x G3 _* i
&ei, B6 v6 p. p/ i/ m2 `# V& }: G
&uiErr);: G" w/ D* Y( O
! T5 a6 n+ y! p# C SysFreeString(topicStr); 4 h5 z8 j, \( ~- M. [+ } SysFreeString(itemStr); 3 }) _6 d# z! v f' Y, T SysFreeString(valueStr); 6 g9 Y" F# n/ ]( g" j% e6 W ) a7 I: k8 G; L7 n: {9 N" V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???3 @. M+ ?) q" D
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???? m5 a- O |5 A$ ~$ w1 ~4 n
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! G) ?* K% ^% x ]; L2.这是request的程序6 m( }8 r; D( c% `+ Z! _0 l3 ?
// Request a value from Extend, g8 x- h. G" F, h& P- V, k
//6 J5 W: W: x" @) D7 b) I& b
// Initialize the variant that will hold the BSTR. Set the variant's ) O& p+ q9 k4 N: t3 W6 p2 Q0 H// type flag to indicate the fact that this variant holds a BSTR. Place the 8 z ?. \% w$ H& V/ r// BSTR into the variant structure. ; W$ B$ c( l. n2 ^" \, v1 `. h' `+ w' C+ G* p6 l
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);. R* c2 D0 p- r/ T, T
* t- a/ s. c" z' l$ c/ W& d itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 1 m" Y2 t0 s6 D VariantInit(&requestVariant[0]); : h! f0 c5 Y- B& n
requestVariant[0].vt = VT_BSTR; + ~0 e+ c. t6 T+ c" I7 }. @ requestVariant[0].bstrVal = itemStr; m' P! _ I% u- Z3 ] ! \1 V3 T% n: a! U topicStr = SysAllocString((WCHAR *) L"system");' u# I+ h. O. b3 m7 A' h4 v9 B
VariantInit(&requestVariant[1]); 7 y2 G& c4 X: B0 g- S4 N
requestVariant[1].vt = VT_BSTR;( ~- y2 r5 g3 k% P
requestVariant[1].bstrVal = topicStr;9 i9 u$ a$ }2 Y H
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// Set the DISPPARAMS structure that holds the variant. - A$ r/ o" r3 c- S& x& |: X+ C; e' Z. p
dp2.rgvarg = requestVariant;3 O$ H' P5 S! T
dp2.cArgs = 2; 9 f0 m% L2 J+ L3 A dp2.rgdispidNamedArgs = NULL; - k% a% n; K) \ dp2.cNamedArgs = 0; 4 c# _$ h6 v H$ s( P9 _3 r6 J& I9 y ( O7 N0 q4 U" m" y; Q$ M! E var.vt = VT_EMPTY;) _1 d, E; W/ C; I5 X& E
+ q) N; _: z X3 D- e& ^/ @6 V// Call IDispatch::Invoke()7 A }# k2 a$ t8 K4 O6 i
/ V7 w( ]% ~$ N' R hr = m_pDisp->Invoke(3 k( K+ i& ~- G# P! D* _# T
requestID, 4 T- q, M+ K% Q IID_NULL, + _7 ^% E8 x% l; t& {: v. c LOCALE_SYSTEM_DEFAULT, # f0 _8 h2 O# K! x DISPATCH_METHOD,2 m* _& b2 _/ M% j7 h
&dp2,% D! a: H1 ^, t5 N; q
&var, 5 K5 p8 W& F1 D3 ]" `! t &ei, T, c: M( W0 J" l2 b; Q &uiErr);4 b) e2 U) e4 a$ ~