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:, k) e8 v W' T& `( D2 X7 ~; N
Name = (WCHAR *) L"Poke"; + o1 g" r7 B% W+ q* r: ? 6 F# K0 ?/ m( |; ~* z1 c1 i1 M! n
hr = m_pDisp->GetIDsOfNames (( L6 ?# m5 i. @9 W1 D4 B# h D; Y. m
IID_NULL, // reserved ) S8 L7 s9 s! y &Name, // Array of names to get IDs for. c2 w6 B# ?+ f0 I
1, // # of names in the array ( y/ r: A( `$ U) @ _/ K& | LOCALE_SYSTEM_DEFAULT, // System locale , N p) ]9 @# D9 h; h &pokeID); // Array of IDs to fill on output& o5 V4 T! f/ f3 K8 ?+ b
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if (hr)! S1 I- U1 I' W# S1 U
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MessageBox ("Get Poke Unsuccessful"); $ a* m: i/ \, o9 t( p return; 5 Q/ `1 O1 h7 Z$ `+ J }5 G6 l& v7 K5 j: d. Y$ f
3 Q, u3 a2 g! ?9 j: o2 Z/**************************传递数据给extend**************************************/* N, M2 O: h/ ^/ g$ {2 r" Y
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); , A8 l4 Z) m* Q. } & d; Y% Q: Q5 B3 e( C
valueStr = SysAllocString((WCHAR *) L"1232");0 V/ e6 l; T- m
VariantInit(&pokeVariant[0]); ) m1 p! S2 u% ^9 T pokeVariant[0].vt = VT_BSTR; ; T( W6 j9 i4 S" A: f pokeVariant[0].bstrVal = valueStr;& ~. F* n" D S8 b7 f
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");* f, Q7 S8 D0 E2 i& r: D
VariantInit(&pokeVariant[1]); 9 [2 ]. v1 {: L6 C
pokeVariant[1].vt = VT_BSTR;. ^" r- S$ r8 ^, `1 J& n3 Y- K8 I* ]
pokeVariant[1].bstrVal = itemStr; 6 [5 a, ~' C2 c L9 L* D; o$ R1 \8 c ) Q5 U& d8 u, r; u* ~ topicStr = SysAllocString((WCHAR *) L"system");7 z- V: V/ x" p! d9 G( V9 B
VariantInit(&pokeVariant[2]); " H) O2 s' A6 \; Q8 X' H% J pokeVariant[2].vt = VT_BSTR; , q+ s6 W5 {3 ^! d+ v pokeVariant[2].bstrVal = topicStr; & L9 Q7 _1 C. D2 _9 n6 _# ]: r/ S) w
// Set the DISPPARAMS structure that holds the variant. ( `+ O9 ]" j, }) \7 M# ]% D. h/ J, E+ E; |! F! q0 A: O' I2 R
dp.rgvarg = pokeVariant; " c4 |7 h: ]( n- L) _ dp.cArgs = 3;3 c' b& U0 e4 L5 E# ^
dp.rgdispidNamedArgs = NULL;7 P4 Z: O/ g) b x4 P* A
dp.cNamedArgs = 0;5 a- S" u2 t3 ~) i: f
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// Call IDispatch::Invoke()6 k$ M3 w% O) ~) Y4 G
. M# H8 O3 E6 [ hr = m_pDisp->Invoke(! {- n3 D' {( X. O; D0 M e& Z
pokeID, 8 V$ Q7 ^1 c! f6 K( a IID_NULL, " i' D ?; J: C2 n! o LOCALE_SYSTEM_DEFAULT, g& \5 C q9 Z+ E2 i' W DISPATCH_METHOD, 3 w; m6 ^4 v. [& g3 ?( a &dp,/ D: ^8 l3 m |9 R
NULL,) ^, @$ \: S7 q; a4 E- f
&ei,% v" p& p% S* D! g
&uiErr); 5 n, R/ r Q4 e9 W9 ]5 K% Q) [1 A" _
SysFreeString(topicStr);6 S7 d5 T! d) q+ h
SysFreeString(itemStr); - S" O+ `' K7 d8 w* J4 C$ U& G SysFreeString(valueStr); & o$ \. z9 b: F. l1 s 7 `$ I" z8 P/ g% b2 }8 O) D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??? , P) V/ A: H+ _) O) U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????* l i+ w& c% l1 s" d4 ~
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2.这是request的程序- ^& {3 K- M) C6 H: T
// Request a value from Extend% H3 L5 K/ A, X* z
/// K$ T4 s5 @ Q i% w9 u
// Initialize the variant that will hold the BSTR. Set the variant's 2 _% R" V: E% r: r% G2 y2 j// type flag to indicate the fact that this variant holds a BSTR. Place the5 c5 E' K8 |# Z w* B, s1 b
// BSTR into the variant structure.2 v" r5 U; d; ]: h- W2 z
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);6 |2 e% ?( O- R* D7 a) f7 T
$ T* _$ T' ]* h1 ~# ?. @ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); : L+ P7 Y+ b+ O, ]7 g VariantInit(&requestVariant[0]); 4 ~0 d+ G `& M2 a* k7 `" u' g requestVariant[0].vt = VT_BSTR;1 l8 v. z$ [2 W2 t4 r/ W
requestVariant[0].bstrVal = itemStr; " ?' ?. \$ _/ E( O e5 \" x/ P , R' M- c$ o+ q7 |0 ]6 W topicStr = SysAllocString((WCHAR *) L"system");( m! s/ t( k% K0 K) H) W
VariantInit(&requestVariant[1]); . j, v* N o7 r- `+ I& z
requestVariant[1].vt = VT_BSTR;/ k4 ?% O, k& b
requestVariant[1].bstrVal = topicStr; ; i: y7 f1 ~' V1 T G- F9 i# \* v " ?2 Y: z' d- v! B// Set the DISPPARAMS structure that holds the variant. 0 Q, l% [) R Y: [% P( s9 u ! f. h) R1 h: x7 o, ~/ y( S) e [ dp2.rgvarg = requestVariant;; ~: p- K! ^) `4 j# X
dp2.cArgs = 2;* B+ g- y; n! A$ J# s
dp2.rgdispidNamedArgs = NULL;3 Q w& ~" r& A. v8 Z
dp2.cNamedArgs = 0;( b6 j5 Y5 s# |. W5 k1 [! j5 Y
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var.vt = VT_EMPTY; , F0 u; J$ a0 S8 m1 G: B0 w 0 O6 r2 u& q! M// Call IDispatch::Invoke()- L! o& g" \& |+ ]+ W
& x# G! s% C8 W% B* Q hr = m_pDisp->Invoke( + R' G- E/ V7 X requestID, 9 S; c3 @7 [: n/ e IID_NULL,5 E, Q7 h* a8 ^/ e f
LOCALE_SYSTEM_DEFAULT, - I7 D9 c" `3 l+ V( j- E k9 U DISPATCH_METHOD, ! l, ?' u$ s8 \1 E) t% Q! {7 D" v &dp2,0 N6 t- o- ^+ N- Q6 X0 X2 ]
&var,: I7 q5 D' L/ s' \: ?/ x
&ei, 6 k9 Z5 P' J" r! { &uiErr); 7 m: x) @: q6 U2 B- J - C- f* T" A& t" `# p9 V* f SysFreeString(topicStr); 3 c. K% D0 b6 _6 V& B SysFreeString(itemStr); / \' n7 l5 ]' b6 Y. T4 R请问该程序是获得extend里面的哪个值? 5 B' H1 W& V# ^! F5 `, ~6 E- 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????