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: . _3 u3 P* _8 B. x7 _Name = (WCHAR *) L"Poke";9 K% \# [+ \# @6 t4 V8 x4 q" e, h1 X
! y: I0 ?2 h9 q4 k) a; [ hr = m_pDisp->GetIDsOfNames ( 8 U0 ]) [6 d2 [- z. z6 C1 l IID_NULL, // reserved . a( u" h7 `+ T# F K. W &Name, // Array of names to get IDs for- N: x+ e% U6 K% {% t* y6 C
1, // # of names in the array# g! B6 s& I' z
LOCALE_SYSTEM_DEFAULT, // System locale7 d# ^7 R8 o* z F% ? l
&pokeID); // Array of IDs to fill on output9 {% r8 W* G3 J4 v% Z' i F
; m+ f8 P5 G% e- j+ \ valueStr = SysAllocString((WCHAR *) L"1232");: A f5 _4 X4 q% q+ T( C8 O. q
VariantInit(&pokeVariant[0]); ! Y J- M! j/ g, a) U! n pokeVariant[0].vt = VT_BSTR; 4 s, x9 e4 [4 R: ^; V) m9 a pokeVariant[0].bstrVal = valueStr;4 k: g. H. q. K4 V2 ~; K0 x$ S
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");5 b2 P' T+ N3 O
VariantInit(&pokeVariant[1]); . ^& t4 ]! h9 H6 ~, u
pokeVariant[1].vt = VT_BSTR;# h+ g* h* h1 a
pokeVariant[1].bstrVal = itemStr;- b6 M+ X, ~5 b4 k# s
8 ]% C: ?9 L5 h1 D9 ]1 B7 c5 G topicStr = SysAllocString((WCHAR *) L"system");! u% w6 [+ ^" Y
VariantInit(&pokeVariant[2]); % q: p% r% E H8 ] o0 O* Z
pokeVariant[2].vt = VT_BSTR; ( b; d% P9 r6 q6 d' D7 ?1 @: S pokeVariant[2].bstrVal = topicStr; ~* ?7 t" ^' Z, b! l: ]" w1 v/ Y" b7 F) G
// Set the DISPPARAMS structure that holds the variant. * R7 k/ _7 h- C. M* U' t& o! s
dp.rgvarg = pokeVariant; # N5 o/ u' l# g7 h' p) k: f, o dp.cArgs = 3; ; ^; |2 P4 w0 V. m# a P: }& } dp.rgdispidNamedArgs = NULL; ! j' y" g& ^ ]2 [+ `( b& I. O7 M" O dp.cNamedArgs = 0;) c0 r( B+ Z/ l. U1 f6 F A: a
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// Call IDispatch::Invoke() z) r' B' V6 w' ~# ?
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hr = m_pDisp->Invoke(0 H' I2 a, L* [
pokeID,: R: t2 |. k, F; C9 b/ [
IID_NULL,0 s1 H. C5 Y- V- ~* a' u5 R# c
LOCALE_SYSTEM_DEFAULT, ; z0 n* G. _7 |9 j9 f DISPATCH_METHOD, - x# P ^% L7 I. T& t3 A4 U# ] &dp, 4 n( |! n6 F# K% U# F- Q4 _7 V# s NULL,8 V6 Z r, w# L' G& X% R
&ei, 7 T% }+ t! u4 z2 p/ n# t0 Z &uiErr); . e& p* J4 }7 C: d , G( g; q- h# T$ Z SysFreeString(topicStr); " I) b. v4 L$ p4 n SysFreeString(itemStr);* V. k/ R8 [! s& s4 X1 o7 }
SysFreeString(valueStr);0 p2 ?: J0 |- ?6 _2 [- @4 U5 c; E. [
3 D; C$ z) P# T" o' I! N* ]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???$ w4 H5 `4 ? b% x
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????3 r; J# {# a g; I0 Z# |. ^
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2.这是request的程序 $ a) s* P" E( Z& Z5 X: Y// Request a value from Extend% u2 d- Z/ Y$ l. U, a4 R. p$ x
//' c4 T% E9 [0 I* r2 J/ F) `
// Initialize the variant that will hold the BSTR. Set the variant's , |6 ^/ s4 {* H# R/ H% g. q// type flag to indicate the fact that this variant holds a BSTR. Place the3 T7 v* C3 p; K; n" J' s# b$ e: ?5 }
// BSTR into the variant structure.! @8 E7 z4 J( |3 Y, _8 w9 e
/ e5 [7 ]5 d: r' l! C requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); Y7 O C& H6 B1 H5 n
* K$ B9 I& f: j( Q itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");9 a/ G9 e: [. U5 M6 |
VariantInit(&requestVariant[0]); 4 b# N( d# `/ M8 D
requestVariant[0].vt = VT_BSTR; h1 |" q: z6 x @3 Z I requestVariant[0].bstrVal = itemStr; . B, I1 m+ C3 y# e1 Y . D' C9 x3 a2 w6 m topicStr = SysAllocString((WCHAR *) L"system"); ; K5 Z6 Q/ s) ^3 F; J VariantInit(&requestVariant[1]); * }% q& \, @! D8 @/ _8 N requestVariant[1].vt = VT_BSTR;; R3 k: A g0 T; X7 `- K1 c7 `! [
requestVariant[1].bstrVal = topicStr;5 o) v" ?# N' z0 z! M0 V( }0 y1 F
" Q( e6 u' B5 I2 v4 t. n// Set the DISPPARAMS structure that holds the variant. " {" b2 x9 F4 y( `5 l9 ]$ L1 m3 H1 ?" D
dp2.rgvarg = requestVariant; 1 x; |) i& {: W4 p# {, B+ t dp2.cArgs = 2; * X& d9 ^$ S3 E" ? w( k7 J: N6 v dp2.rgdispidNamedArgs = NULL;0 T2 N" Q* P& |- j$ y, C0 w
dp2.cNamedArgs = 0; 6 E h+ ~7 T" C/ I- U9 g% h# w. R+ t1 ]) N
var.vt = VT_EMPTY;, X% {1 j) j6 Z# L+ r3 j
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// Call IDispatch::Invoke()' H+ [; R1 Z5 h; b- B
9 s8 X0 _+ o& ^2 ~6 U hr = m_pDisp->Invoke( - C# C2 Z) x0 }( T( f2 _6 A requestID,, R0 ] F+ \" o `# y
IID_NULL, % ^5 E, _6 |. i5 _ LOCALE_SYSTEM_DEFAULT, 6 }6 S) ?0 j* R! F5 J. g DISPATCH_METHOD, 1 [5 B. } u9 o" t" x &dp2, j) M* g, y* O B &var, * r6 n3 ^7 ~/ M1 ^# A &ei,# s. E/ `% I% u0 n/ ^$ v& N9 ^0 P& Z
&uiErr);* I( M" Q+ Q. p
! F' ^8 x- k1 @0 Y SysFreeString(topicStr); 9 l1 ]+ N0 T6 M4 N" \ SysFreeString(itemStr); - B' J* I f9 s- U请问该程序是获得extend里面的哪个值? 0 |6 m/ O8 U* P9 \$ `. T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????