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: . n2 E& d ^+ \6 YName = (WCHAR *) L"Poke"; * q- O- M" Y/ N9 I 0 [' Z4 V- L- O9 D9 Z. c) u) e hr = m_pDisp->GetIDsOfNames ( + H' K( f1 D0 o% q5 }- Q9 k. Z IID_NULL, // reserved , F- o& b* ^& P }; O. W1 r0 ` &Name, // Array of names to get IDs for: ?- M6 d4 d. ~* Z+ ~, V
1, // # of names in the array; y3 p. O6 k! p# K, @0 L/ j+ W
LOCALE_SYSTEM_DEFAULT, // System locale , n" s0 w5 v7 r* k &pokeID); // Array of IDs to fill on output9 J& ?) M, e# n0 T& U
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if (hr) ' \+ { l/ H" |; I$ D. z1 ?+ K { 8 A; q/ m5 z" T+ y MessageBox ("Get Poke Unsuccessful");0 Z0 |' t8 [ ^6 K1 U H
return; 2 O: B' S9 a- O9 t5 z+ ` } " N6 O( y# @5 S/ a) Q/ [+ s0 ]! L. C; M
/**************************传递数据给extend**************************************// n6 ~% L% E% X$ F1 R1 ]
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); . W$ ^0 v/ x8 ] $ {9 o2 P$ G# w valueStr = SysAllocString((WCHAR *) L"1232");) F2 t$ B8 y+ X8 k L! ]2 y+ Y
VariantInit(&pokeVariant[0]); " r r( y3 X2 u* q3 X f4 x pokeVariant[0].vt = VT_BSTR;" Z; m( a5 n5 Z2 G8 W7 \& w
pokeVariant[0].bstrVal = valueStr; ) H% G* @6 H; `9 B) E6 h3 ?4 Q ! T5 @' @4 l+ ^8 f+ [! U9 c9 } itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 4 j4 j& Z( M; l/ S0 r) ^. o7 d) s VariantInit(&pokeVariant[1]); 2 n: ~7 H- Z" W/ p$ N pokeVariant[1].vt = VT_BSTR;) a6 |* b8 g: a3 P' L4 Q: K
pokeVariant[1].bstrVal = itemStr; ) j1 g& ^+ V/ K. i0 }! F 4 x! e' L0 Y1 a+ q! _ topicStr = SysAllocString((WCHAR *) L"system");" x6 {8 R( q" w8 H& B
VariantInit(&pokeVariant[2]); # h2 [$ p0 B* Y" ~! O pokeVariant[2].vt = VT_BSTR; & R/ r) V: \! E4 s" D. o pokeVariant[2].bstrVal = topicStr; ! p* l2 p1 x; d: u# ^0 P* U+ `. a# Y& J
// Set the DISPPARAMS structure that holds the variant. ! r+ ^5 d( G- ~1 r' Z# _. I/ B" o7 n: ~
dp.rgvarg = pokeVariant; - u3 N Z& z$ U1 X. g6 m, N* O dp.cArgs = 3;# h( W3 a" q3 P
dp.rgdispidNamedArgs = NULL; 4 r! {+ G9 @8 L) I dp.cNamedArgs = 0;. ]. h' p6 [; q, ?2 ?. W, R7 G4 p y
7 l3 t3 Q* ~% {. F- G& v// Call IDispatch::Invoke(); I7 T8 x$ o% G3 P. \! G( e. n7 i( e
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hr = m_pDisp->Invoke( 1 v6 I) @9 a! E+ I* N; t pokeID,& Y. O, i) ?% T, f5 T9 w* U
IID_NULL, 7 w C9 Z7 ?: F$ b" s. D LOCALE_SYSTEM_DEFAULT, : e9 f5 c x$ f2 f1 x2 Z. ]2 e, q2 U DISPATCH_METHOD, , t) [; C6 u9 o &dp,$ V @2 z6 \; O5 p# L+ ?9 j: e( W( y
NULL, 7 U% h1 T/ g4 J4 p2 J &ei, & W2 @, `$ b! C! A &uiErr); $ W0 } P9 _6 x " H3 I; K! u( @6 T3 m SysFreeString(topicStr); / o; W# ]/ y3 O+ J- { SysFreeString(itemStr); - Q4 W/ R8 [( m6 ]3 M1 [4 L& S SysFreeString(valueStr);9 f1 V, p, R9 j, s, i/ v, t4 V( ?
& x3 b! a; \, j% s/ f& o8 q( w2 P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??? t y- ]+ V# m- N% H0 w/ |5 |! k
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???? & M, a* W+ B9 M& z7 h# h2 Q" K' R) J
! v; k- d4 G8 ]" A2.这是request的程序 + J# H5 [% q! G% T3 @// Request a value from Extend% B- S5 c# A( H7 H4 d1 j
//- [5 }! e2 O3 P9 Z
// Initialize the variant that will hold the BSTR. Set the variant's 2 Q/ N2 k7 Q1 b0 d, W: Y+ ?; l+ ]// type flag to indicate the fact that this variant holds a BSTR. Place the; L# E8 B' F! h5 a; e) d# K9 _) B
// BSTR into the variant structure. # S# `( f1 z! Y, Q9 p$ r7 G- e$ p/ H2 E r& g; U. @8 D6 ~
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);9 g7 f% y* ^7 F7 ?
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ) F4 N. ], ^) ]4 Y& ^* S VariantInit(&requestVariant[0]); 4 G, g/ b8 L( Z$ f
requestVariant[0].vt = VT_BSTR;4 Z3 G- w' a: E, ^$ H
requestVariant[0].bstrVal = itemStr;9 q+ p. X2 G6 j! k/ ]
5 L B* w- P; W; w" r/ m) w, l topicStr = SysAllocString((WCHAR *) L"system"); & q) y3 ~! q- D VariantInit(&requestVariant[1]); " B9 k+ Q4 \3 \2 Q: @
requestVariant[1].vt = VT_BSTR;+ l5 \5 O& L$ y5 U/ X/ f3 i1 U- p6 [/ c
requestVariant[1].bstrVal = topicStr;; u8 `0 j6 I6 k5 J/ ~% @. {1 P
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// Set the DISPPARAMS structure that holds the variant. 0 J1 {2 U4 a3 Y/ `- Y 5 ~) A0 L; n6 T2 @' N* ` dp2.rgvarg = requestVariant; . N5 y1 k6 C8 S6 ~2 d( K dp2.cArgs = 2;- ]8 E$ `4 x) X( b, A$ I( q
dp2.rgdispidNamedArgs = NULL; 5 K% O' Z0 Z* j; h4 W dp2.cNamedArgs = 0; 4 @/ ]8 ~& D5 \ $ v' v$ P5 l' m7 H" O+ |4 c var.vt = VT_EMPTY;% b: Q$ b8 k# Z3 Q. A7 t* n
5 @# c( s; s5 A- D9 q* w- G. l// Call IDispatch::Invoke()% T( N* ]9 l& c$ r
- q6 H# s/ S5 h" k/ [7 p hr = m_pDisp->Invoke( 6 X8 ?& y8 Z; I4 i& h2 p' ] requestID, 4 V% J+ v# g5 X* T& F+ I4 c1 H% e IID_NULL,, W& k" \$ B! @' V
LOCALE_SYSTEM_DEFAULT, " Y% i! v0 ~5 k% Z, P DISPATCH_METHOD, ) n/ q5 O0 q, q# l6 ^8 w &dp2, 7 g/ R; m* D0 z* ^1 b. z& C &var, ( D+ K- [/ `, _5 e) A1 r( e &ei,2 `4 Y+ j# W( Y6 v/ k
&uiErr); 0 h* N' r6 x( n9 h" z6 \% x3 r. I: V% U0 f! I$ V; n0 L
SysFreeString(topicStr);" d+ i' j7 e5 Q5 C% f1 A
SysFreeString(itemStr); ' ?+ B1 y- D0 O请问该程序是获得extend里面的哪个值? / s/ h, R- `3 S3 S. Y* k" q+ ]# \% G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????