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: ^, Q$ P8 x: g6 y5 O
Name = (WCHAR *) L"Poke"; # I/ E T# J9 K9 E. Z , W9 Q, e) z e8 Q4 V7 ]
hr = m_pDisp->GetIDsOfNames (/ j3 K% y5 e! [' C, P
IID_NULL, // reserved0 R2 @7 R, X) {. e& k3 s
&Name, // Array of names to get IDs for& H3 b) L) Z9 ~/ \- D5 p( l$ ]4 f
1, // # of names in the array a$ N: R. E9 i, Z% v" Q
LOCALE_SYSTEM_DEFAULT, // System locale0 G# T" C$ x- T0 d- r' s5 q6 j& |
&pokeID); // Array of IDs to fill on output0 r7 b. C$ I$ i, o7 v- ^
# {: I! G* h9 e1 _
if (hr)) f) S* m0 L: L* f) g" e4 {: Q
{ : e0 N+ D w0 ^7 z; g MessageBox ("Get Poke Unsuccessful");. _3 [# t0 G+ @2 P: [% ?' {
return;5 [; Q+ e8 M" |4 L' x! n6 H
} & _; X$ [& g4 T5 M' _9 P' r) w
/**************************传递数据给extend**************************************/* H2 }/ H; Z x
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);( j# Q+ ~% a r5 ~; n ~
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valueStr = SysAllocString((WCHAR *) L"1232"); % _9 J2 e" D3 r$ ^; j f5 c$ j VariantInit(&pokeVariant[0]); 5 o% U1 J! x) ] pokeVariant[0].vt = VT_BSTR;1 ]2 a5 D9 k( T" ?- [
pokeVariant[0].bstrVal = valueStr;2 k1 l4 H, R# S
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");# H% Z, [" w/ {, W2 A' ?3 s [ s
VariantInit(&pokeVariant[1]); 8 Z. Z! ^7 X& U3 K5 Q6 [ pokeVariant[1].vt = VT_BSTR;. `8 n6 ?$ f! g" z+ c
pokeVariant[1].bstrVal = itemStr; 5 p$ c _0 S6 c6 r/ A; {; h* p3 W6 L& n w( J
topicStr = SysAllocString((WCHAR *) L"system");4 g9 ~+ P1 a( k7 z
VariantInit(&pokeVariant[2]); ?* x; c) [5 q8 M' T1 j }1 A% Z pokeVariant[2].vt = VT_BSTR;" ]$ t6 o5 j o7 E0 H* Z; H. f
pokeVariant[2].bstrVal = topicStr; + G$ }; z* D* V: m3 L& w8 x; S% o* x1 |( Y4 ?$ X9 F/ Z
// Set the DISPPARAMS structure that holds the variant. * i& W4 W' I( c5 }5 ^ _& D# n% k& z! d$ n- Z+ H, i
dp.rgvarg = pokeVariant; ! ?3 ~! l1 x1 `, ~8 v dp.cArgs = 3;+ H9 G1 n8 }9 ~1 j+ k# s
dp.rgdispidNamedArgs = NULL;. e1 l: {( a1 I# a/ [9 j! A
dp.cNamedArgs = 0; / s6 I) A% r# ^ : Q9 e5 T5 v' i2 k// Call IDispatch::Invoke()* F, y; J& H2 E. \8 K* P
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hr = m_pDisp->Invoke( " S$ M& M6 o7 ? pokeID,/ X* R; ~: B# X
IID_NULL, + Q# I* o3 ]: J) s, i! x* q* S LOCALE_SYSTEM_DEFAULT, 4 F7 y0 Y. n; n5 O% Y DISPATCH_METHOD,4 m6 Q. W; R7 O p5 U( T
&dp, Q/ D, e g6 t NULL," y$ r, G2 _) h. M, a6 j' \. J
&ei,7 }- T" G# R! ~' h8 P: l; L/ R
&uiErr);/ f; }# S+ n1 b
$ ^# t6 T- C. n/ D7 T SysFreeString(topicStr);2 n$ z% y* {* f$ f0 @ {5 j2 W. g
SysFreeString(itemStr); * Z8 J. Q1 C7 I$ ~ SysFreeString(valueStr);+ c. g7 q8 ~" T9 u
/ {! C+ M$ c! j2 Z6 a t& ]% V" E% |( d+ A9 A" `9 R2.这是request的程序$ s6 @ ^6 c8 j+ z9 C) V" t
// Request a value from Extend2 U4 ~% A& Z2 a! @3 w' k4 G
// : f+ s) v: h X5 {2 r! o. m# [// Initialize the variant that will hold the BSTR. Set the variant's , n* [+ r- W5 Q) J5 [5 o8 X) M// type flag to indicate the fact that this variant holds a BSTR. Place the & O7 u5 `: T) U4 K" B; A0 N// BSTR into the variant structure. " H; j$ t% \# R! h7 I8 q! V: W 9 F! Z6 p" Q+ x# E requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);4 e( {4 R6 r" W; Q0 A9 i
t h, h& Y* p6 N4 d itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); # m$ z% R: ?7 J, C: H1 t VariantInit(&requestVariant[0]); . n+ \( B, B6 w requestVariant[0].vt = VT_BSTR; ) y6 y4 e( x% `) `. y requestVariant[0].bstrVal = itemStr;: b, C( y7 |% A
# W% ^7 I0 r/ d0 J2 _" l
topicStr = SysAllocString((WCHAR *) L"system"); + R7 x) r# h' n" c VariantInit(&requestVariant[1]); 4 I. ?. {, Q5 b$ }4 ^ requestVariant[1].vt = VT_BSTR;' ~% t: t/ b v) J2 U- I. M+ L% G" a
requestVariant[1].bstrVal = topicStr;- I; U2 O# ]) U2 b8 @4 [7 M
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// Set the DISPPARAMS structure that holds the variant.% W( i4 a& A2 v
& N R' p3 T% i( Q4 ]- N3 w dp2.rgvarg = requestVariant; $ s# @4 {2 L! l$ m dp2.cArgs = 2; , z% d% G, A0 ?) ?0 O; R6 N dp2.rgdispidNamedArgs = NULL; 1 t4 r/ F6 [7 e dp2.cNamedArgs = 0; 5 ]+ m9 V+ k, D' d/ q. D o2 ]: O1 ^6 g& E' Z6 r$ k( j% g8 ^+ Y8 J' p
var.vt = VT_EMPTY;" I, G7 c! i8 N# u' w
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// Call IDispatch::Invoke() + |& O! X1 P! k' h4 I3 w- }/ }; | X+ a$ d' @
hr = m_pDisp->Invoke( 9 Q: \# `$ x) w/ j- H requestID, " z4 L6 B& [- P* D) z+ s1 g" s IID_NULL," o; O2 k9 g7 i& M
LOCALE_SYSTEM_DEFAULT, * y; q# C* `- `$ C6 h DISPATCH_METHOD,5 t, Y+ B2 `2 [7 i' h! y- c1 @
&dp2, * L/ |4 L. J+ ?: b4 l3 Z& s &var,! K1 A$ i8 b$ [& f
&ei, ) W$ |7 Q: {% K$ B7 n" \1 n- I% k &uiErr);% W3 s" N- Y5 w0 W, L
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SysFreeString(topicStr); + c" l4 o# [5 ] P2 l SysFreeString(itemStr); ( L* u4 `% h; Y8 {/ p请问该程序是获得extend里面的哪个值? : M% g/ r) }6 t! 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????