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: 1 X. l5 ^5 K; a9 JName = (WCHAR *) L"Poke";; a: u s" g" Q7 V1 _; A
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hr = m_pDisp->GetIDsOfNames (9 v3 f& \) N4 }; x
IID_NULL, // reserved- I/ F" ^0 c: Y
&Name, // Array of names to get IDs for% n' j/ K6 v; d" b, n
1, // # of names in the array- _! f. k0 o2 j$ P+ M8 k; z
LOCALE_SYSTEM_DEFAULT, // System locale # p7 w5 F8 j" W" j* A &pokeID); // Array of IDs to fill on output* h* @& O7 p. U) T. n
2 h* D( \5 H' r% L' @ if (hr) 6 h7 J) S7 |- ]. x5 P' ^ r2 n. a {. q8 b) Q# p9 d! _1 [' m8 v) n
MessageBox ("Get Poke Unsuccessful"); 4 q |7 `" T. o6 x; Q return;! x. c) g4 L. a+ \: B R# T8 L& U
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/**************************传递数据给extend**************************************/ ( z* O5 H$ P* }0 u/ W pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); , c. c' V) J5 } 1 W6 r6 h& \' b1 V& g @- X' G
valueStr = SysAllocString((WCHAR *) L"1232");; \/ `& f8 a! i/ K% w
VariantInit(&pokeVariant[0]); 6 Q/ |: u# Q1 S pokeVariant[0].vt = VT_BSTR;' }/ x# w, t) c0 \5 b
pokeVariant[0].bstrVal = valueStr;6 X M0 L2 w) C5 n2 \0 H
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); & x1 I; t& g9 D' s( m% P1 L: Z; u VariantInit(&pokeVariant[1]); 9 l. T" P v1 \# @
pokeVariant[1].vt = VT_BSTR; ( H0 l8 Q# h3 C/ T% F% F pokeVariant[1].bstrVal = itemStr;1 j0 |4 v& M' _; j2 K" o
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topicStr = SysAllocString((WCHAR *) L"system"); 2 ?+ K) f2 H Y4 v VariantInit(&pokeVariant[2]); , q/ A8 x9 E# X; h: S/ W pokeVariant[2].vt = VT_BSTR;3 c& e) X$ \ @ C8 j9 D( W
pokeVariant[2].bstrVal = topicStr;6 [' q) Q3 I0 q, x" d0 O: M7 ]7 k" B, P
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// Set the DISPPARAMS structure that holds the variant.1 J' ^& M/ Y" Q) u9 d
) v- H1 B& m. x- y, V: Z/ m' d% ] hr = m_pDisp->Invoke(- P; |- q( T. ?1 g* ?. T
pokeID, . B( ?/ C# I( Z) h$ S6 z7 a IID_NULL,* P5 B8 v7 _! `8 |+ t+ M, z/ e
LOCALE_SYSTEM_DEFAULT,# B' A1 Z4 l, i- e# y
DISPATCH_METHOD, 7 \+ r8 G2 f% v. d! _: g &dp, - `4 V- j! K; L/ V! [/ b NULL, - W0 }# g: ~4 t$ y2 f' I &ei, 7 n3 P. t" k# P; S; ~ &uiErr); 1 O" s- i! |( T0 `4 H7 b! y6 p+ y
SysFreeString(topicStr);0 P8 g; \1 B- S( k
SysFreeString(itemStr); $ e2 J+ g" g. N6 o" k- x$ x SysFreeString(valueStr);3 c' }. s" g: \+ j; {' g
& I, t& b9 }3 }/ ]$ N7 q8 D6 @0 B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??? , b* u2 \4 x! I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????( b; T. \' j7 B% }5 [
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7 x c; I) z0 H7 Z7 l2.这是request的程序: g5 Y" ~2 W4 U% c# C
// Request a value from Extend $ s. t8 y! [3 n P/// g0 y4 ?' ^2 u! x
// Initialize the variant that will hold the BSTR. Set the variant's ) t l2 F Q, C// type flag to indicate the fact that this variant holds a BSTR. Place the0 ^1 g+ C1 K1 Z: J5 S7 d/ [
// BSTR into the variant structure., u% y& k6 o" I q
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);7 O- l! z" C5 c. q5 l/ H) G
: H$ O& C0 Z" c+ f, A itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 6 N# V$ @. U4 F7 `6 ]1 f, n/ t! @ VariantInit(&requestVariant[0]); $ K/ K9 b k! D7 |& r! i" w requestVariant[0].vt = VT_BSTR;; ?: r. ` a5 ]' ]" z
requestVariant[0].bstrVal = itemStr;! c6 D; o: F1 o L7 t: d! D
4 p9 u; @+ d4 v topicStr = SysAllocString((WCHAR *) L"system");. p# r+ P- d* ^% H5 L/ V9 ]
VariantInit(&requestVariant[1]); . J; t9 a9 K) f' _6 D7 m9 q6 H
requestVariant[1].vt = VT_BSTR;/ }" ?- Q& t9 |' b, a
requestVariant[1].bstrVal = topicStr; 6 P, T7 H5 o( P1 s 4 K, i9 y" B) _: Y, [// Set the DISPPARAMS structure that holds the variant. 0 C' U* \! c, \9 L- v K7 H' l- t/ S( L
dp2.rgvarg = requestVariant;( e( R) d! h2 y$ G' V4 g& ]
dp2.cArgs = 2;5 c8 l/ _) N% c4 K P
dp2.rgdispidNamedArgs = NULL;: I" v3 z k J2 m& P. }! ~
dp2.cNamedArgs = 0; ) b2 C2 `' N5 u . j* | [2 R# X7 K2 X4 h var.vt = VT_EMPTY;; L. \$ h( `( W, C) Y0 e& _
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// Call IDispatch::Invoke() # f1 ~8 o2 R' o% q! { ! a8 R9 w! s+ X: O0 @) @, u hr = m_pDisp->Invoke( ; ~: q- s/ l/ O2 D* @: V requestID, ! I: W* ?5 n" p9 d IID_NULL,4 c, L( L0 g3 g- ?) C
LOCALE_SYSTEM_DEFAULT,! e7 ?+ N% l3 D6 E6 t( Y6 j% g
DISPATCH_METHOD, 6 n1 Y: i4 Q7 c! z, t &dp2,' {. M* e2 S$ {7 I# y) S
&var, % P; m" D* `: Y" Q &ei,) u" g3 E; R9 m, V, ^
&uiErr); 2 T' l7 p! R, w5 I( U , j7 p7 M# @1 X2 X4 O* Y SysFreeString(topicStr); # V! w" K/ p, R3 ]4 \1 W SysFreeString(itemStr); 7 H, D& q, \ O9 v7 M* t* p: D请问该程序是获得extend里面的哪个值? h4 k5 h b( j' _8 b! N( E
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????