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: ) ~" i1 A1 ^/ ?Name = (WCHAR *) L"Poke"; 9 |: B/ }: p- p, a f e % e8 q) v% A n L; @+ b' i$ o' k
hr = m_pDisp->GetIDsOfNames ( $ p# q0 |2 N7 T IID_NULL, // reserved C8 h# W8 e1 O8 G5 r6 h4 r
&Name, // Array of names to get IDs for ' f0 Y* C9 j+ f+ X K* U 1, // # of names in the array& Q; }% n( x& |5 }. {2 }) [
LOCALE_SYSTEM_DEFAULT, // System locale , }# c6 [$ p, p &pokeID); // Array of IDs to fill on output ( n) I! A8 c- D/ v $ ]/ f4 V% B0 ?" l) C
if (hr) 5 v$ k; Z8 W) t$ M3 o! m { 5 @' I. V. A- `# l3 Z H+ T MessageBox ("Get Poke Unsuccessful"); + X3 l+ q7 s0 d l* ]) E return; , s! A( v. A1 d o }1 O. s1 q- m5 O/ n
3 T Z2 D" @/ j+ \. w# n/**************************传递数据给extend**************************************/8 q7 D; x8 `8 S8 X
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 7 y5 Q2 a. B% _/ V- r# n0 h2 n 3 V. j( i i7 s* M B6 } valueStr = SysAllocString((WCHAR *) L"1232");- R: b8 D6 @- D
VariantInit(&pokeVariant[0]); 6 z$ P0 Z v, n* g1 o J pokeVariant[0].vt = VT_BSTR;, v/ l4 ?6 f* n! C3 d- y
pokeVariant[0].bstrVal = valueStr; + ^" _- y, z: { x* C( r: o 2 t+ v( z5 [, u* U0 j; A" B1 N itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ; p! M8 I$ r# U3 P! s3 i VariantInit(&pokeVariant[1]); 2 ]6 w9 d0 Z# w. e1 \1 ~
pokeVariant[1].vt = VT_BSTR;, |1 {2 ~. v9 v8 u# X# z
pokeVariant[1].bstrVal = itemStr;3 b2 a) o& I X; T% |7 _" q
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topicStr = SysAllocString((WCHAR *) L"system"); + i+ l2 ^0 `4 I( m; f0 u: t VariantInit(&pokeVariant[2]); : b6 @2 \ I: y* Y2 O1 ] pokeVariant[2].vt = VT_BSTR; : E0 I, {( I+ `" u' |/ w pokeVariant[2].bstrVal = topicStr;# ~. x, T9 B! t e' Q: d w
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// Set the DISPPARAMS structure that holds the variant.! X: o+ q, Q! a9 q
7 c% B$ C1 p! P% ?# _8 |9 ` dp.rgvarg = pokeVariant; 8 j$ ~% C0 @6 K; G" f9 ^ dp.cArgs = 3; / n# ]) t: ~; N7 b$ E dp.rgdispidNamedArgs = NULL;# ?" J/ ]" k% {9 e7 D3 E" J
dp.cNamedArgs = 0; 3 y2 N6 [' [! C7 g( f9 O- E* n8 |- t& {2 @6 R% Q# o8 i. |9 L! Q
// Call IDispatch::Invoke() . }, T' w4 A& x/ q3 @) L ?. z- Q. _+ r2 h
hr = m_pDisp->Invoke( ( E" v( ?' B! S& q6 d- k- ] pokeID, Y0 Y3 ^3 u, q$ C4 ~ IID_NULL, % k) u: N1 s- S. Q LOCALE_SYSTEM_DEFAULT,0 e6 c2 I+ W: h5 J5 A
DISPATCH_METHOD, ( |- z. F- @! k* _+ b( y; a6 V; ~8 q &dp,4 t2 s# h: M6 `) Y
NULL,; P; P2 M& G% N! {: o" h
&ei,# K7 ]2 x9 b' i Q4 p
&uiErr);4 g. q& U) y1 c- w5 A
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SysFreeString(topicStr); & [6 A& J3 Y: J$ {3 M2 ]8 C# f' H SysFreeString(itemStr);5 M ?$ B" M! G2 M/ s. ~
SysFreeString(valueStr); 1 A# l5 U: C m0 S; u$ H+ x" P6 Q 8 ~# J# j+ l2 p. L: S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??? & J4 T+ b1 [. }" e" m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???? - E* R. G) j+ S6 d6 _4 _2 k) _) j! J# D8 I$ l5 u
$ O% k3 i! N1 e4 }% \2.这是request的程序 5 L9 _7 J7 h8 a( u- ?// Request a value from Extend ( f; ^$ j* P0 w1 y4 _//' x: F* u2 U( K5 x' M. n! t
// Initialize the variant that will hold the BSTR. Set the variant's1 R/ w% B1 x% S, `, c* m0 ~
// type flag to indicate the fact that this variant holds a BSTR. Place the * _2 J' V' D3 t- k! F! l/ g// BSTR into the variant structure. & ]4 K2 p! |) ^" p' @) T6 ~+ I ( v6 T: Z b: z: a requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);/ Y6 @' ]' n1 {( S% w9 r, E
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 7 }- v3 y6 x6 \, ]* K+ d( E9 { VariantInit(&requestVariant[0]); + \3 D4 s- `3 Z requestVariant[0].vt = VT_BSTR; ' o7 e/ c$ H7 r$ `+ x requestVariant[0].bstrVal = itemStr;+ W- v: o8 K) v1 B
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topicStr = SysAllocString((WCHAR *) L"system");6 Q0 b- Z m0 Y) v% K' A# V% ~
VariantInit(&requestVariant[1]); 4 }- z- A* u: ^6 G: g# T6 ? requestVariant[1].vt = VT_BSTR; 4 L" b4 k; o* B/ W requestVariant[1].bstrVal = topicStr; - B: h( n8 ^9 O( G0 u3 c+ }- D2 o5 I) Z8 b% c0 E& N) |4 X
// Set the DISPPARAMS structure that holds the variant. * M# t, O1 S1 _- x& e8 x 9 k$ C- H0 j1 x dp2.rgvarg = requestVariant;1 G# e! d6 {4 L& a) u9 V
dp2.cArgs = 2; @, V+ L3 }- g dp2.rgdispidNamedArgs = NULL;1 z* b, [1 x" D' \+ u
dp2.cNamedArgs = 0; 2 q7 x, w6 r5 b8 {- L 9 V U/ {, s; V! | var.vt = VT_EMPTY;) {- ~ G. K3 Z
" R# K5 }) F# x6 ~// Call IDispatch::Invoke() . J7 u0 z7 T2 }/ O* @& p: B. q( m6 f: Q/ O0 K( t
hr = m_pDisp->Invoke(. O6 N# F4 P* M: y* h9 m$ q
requestID, $ z% v& p' N( c3 M" a7 V8 ?5 V IID_NULL,+ n( |1 G. @9 t5 i2 I& q( E
LOCALE_SYSTEM_DEFAULT, ) E9 e" m1 w; E1 y. q0 L# g DISPATCH_METHOD,/ J' j; {/ m6 W& o# g; ~, G4 A% |
&dp2, : }: G8 F. @+ l0 N9 g; f &var,* D. r- _& P9 q' }
&ei, " R3 C- [: _5 M# K9 [7 z* H4 b/ n) h &uiErr); 7 z ?/ x; S2 K) `$ x7 f' D + ?' k: q- x# l% d SysFreeString(topicStr);+ h% Y$ ] U: E; p# S
SysFreeString(itemStr);; s, s1 x& Q7 x: E. P
请问该程序是获得extend里面的哪个值? ; j# N0 {4 F: t4 X+ F! a) {3 G7 B0 v2 Y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????