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:; L$ x+ m. E S7 ?6 w
Name = (WCHAR *) L"Poke";9 K# J, x x- y7 X# l) x
P2 u+ I" T& i" }( m2 b9 N4 D hr = m_pDisp->GetIDsOfNames (; p1 X4 {5 z8 s, r7 Z* ?0 k- }
IID_NULL, // reserved ( G# o: n) G7 R# Q, y& Y7 x &Name, // Array of names to get IDs for r6 E. g+ x% t f7 x, q
1, // # of names in the array / h" ~) ?& @/ Z LOCALE_SYSTEM_DEFAULT, // System locale 4 Z7 f( D2 o( d2 a( h' S. T &pokeID); // Array of IDs to fill on output- x2 \, Z! M* [& q0 Y7 @
2 ?3 X# f6 [9 I if (hr) , `3 l; i9 h; [7 z6 K6 z1 r {0 A( w: X4 p2 X }
MessageBox ("Get Poke Unsuccessful");0 {. D* Y! ~% {. l3 A( u' h
return;2 ?6 [3 D3 I d; c* U3 ?& |6 v6 \- n
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/**************************传递数据给extend**************************************/ 2 Q3 y( o! R4 Q: a/ u( P$ S pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 9 @* Z. @: V" ~! H4 V! l* Z 5 y& Q8 f1 v, K/ |6 J+ _1 U valueStr = SysAllocString((WCHAR *) L"1232");. H# [! ~; k. F0 W) \& u
VariantInit(&pokeVariant[0]); : D" c D5 x2 w4 X5 V/ h' H
pokeVariant[0].vt = VT_BSTR; n: l. x' g ^% H/ V
pokeVariant[0].bstrVal = valueStr; 2 k7 Q4 T8 T4 Y8 M/ i7 s5 R* Z+ k8 n% j9 O0 |* @+ p
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");8 P9 V8 ?" C: ~* U0 z
VariantInit(&pokeVariant[1]); 0 n/ L+ y/ _. M6 r v8 h
pokeVariant[1].vt = VT_BSTR;1 g; H7 S4 r1 u7 F( ^
pokeVariant[1].bstrVal = itemStr; : v: s6 E% y' Q; k) S3 T" b6 R: K$ `2 a, b8 e
topicStr = SysAllocString((WCHAR *) L"system");3 g" t( H' G8 V* p
VariantInit(&pokeVariant[2]); ) Z! h% R4 C3 m4 d pokeVariant[2].vt = VT_BSTR; 2 t; \* C& _( Y$ P pokeVariant[2].bstrVal = topicStr;& X$ N( A. j0 `
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// Set the DISPPARAMS structure that holds the variant. + q& f. H8 z0 m. n( b4 r- I ; z. z8 l) [: C+ u7 {/ r$ B dp.rgvarg = pokeVariant; 5 H0 A1 a" F6 U9 e( I4 J dp.cArgs = 3;- d" a0 U6 B* ]
dp.rgdispidNamedArgs = NULL; % G) T' I( T! f9 ` dp.cNamedArgs = 0; 2 C5 q% @: f- j5 A 4 L. d6 t" e! O4 _7 m: Y% ~6 Z// Call IDispatch::Invoke() 0 V: s, }2 v, K( V8 v9 y # v* ~4 M2 ?" m/ N* P2 o: S5 l hr = m_pDisp->Invoke( * t" G8 t' D U8 K3 a, _. f- b pokeID,0 i; H/ x% C! `: \& ^9 V4 i
IID_NULL,5 b0 i' f* | d) q( M p' y/ P9 r
LOCALE_SYSTEM_DEFAULT,$ V( H" s- F8 k6 T: r+ x* g. U
DISPATCH_METHOD,5 p8 J! d9 |$ K
&dp,* H- C3 Q" Q0 b1 w1 H" M3 Q) F/ E7 s
NULL, + L+ {- u( ?9 ~& P% D6 l &ei,8 e" S" A$ J% k% V% V9 E5 D
&uiErr); & a1 s1 `8 D( q( [3 q0 D5 E# x4 O - Y; n5 g& {; o; a+ i SysFreeString(topicStr); % `6 Q0 ~3 N& m% D" `. l3 D SysFreeString(itemStr);5 [# q* Z/ d0 `" u1 q5 Z0 ^
SysFreeString(valueStr);! w+ t7 l9 d( f, C3 ^2 h) M
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2.这是request的程序/ j& C' j! m" G0 D: U7 T; x
// Request a value from Extend 6 k9 T# Z8 }4 }, m @2 i//! ~0 T) K6 O2 u# I8 i) v
// Initialize the variant that will hold the BSTR. Set the variant's ; i8 R: c# p1 ~- i$ h! A6 E9 j" M// type flag to indicate the fact that this variant holds a BSTR. Place the ( Q( A; l8 | M" ^/ V, d# d- \4 Q// BSTR into the variant structure.( X- Z, i1 g: s2 i3 R8 {. r
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);4 z# Q5 m9 q* T0 A% g/ L
3 y& B3 A) e: x2 P6 V0 u itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); - y9 `/ l9 F" \ VariantInit(&requestVariant[0]); % Z9 h) y0 p3 C requestVariant[0].vt = VT_BSTR; 5 M7 J) ?6 J5 }; r4 i requestVariant[0].bstrVal = itemStr;9 u$ G4 w( s2 V1 S
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topicStr = SysAllocString((WCHAR *) L"system");: S1 `& V- g2 ~- Q
VariantInit(&requestVariant[1]); 6 u* E9 L( O" v7 F j. c# x requestVariant[1].vt = VT_BSTR;. L. M5 i! s' x# V; V, Z7 [
requestVariant[1].bstrVal = topicStr;* V. g+ u' v7 S4 R4 G
6 N* [, [. U. a* b, {8 M9 K3 N// Set the DISPPARAMS structure that holds the variant.& N3 _4 j# d: E6 C: A
: Z3 c8 g+ d. r: v1 M$ m dp2.rgvarg = requestVariant;" ?4 e, U5 Y( x) p
dp2.cArgs = 2;1 u% c# A, C) i
dp2.rgdispidNamedArgs = NULL; ! A6 V3 o" N& x: ~& h" I; R- y dp2.cNamedArgs = 0;+ S% d8 p. q+ W: @2 ^) ]" f* M$ K
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var.vt = VT_EMPTY; 9 o, o( `1 M" D4 y1 Q |9 T 9 v( r6 z( z' N$ q' h7 B L// Call IDispatch::Invoke() 5 {* d) _# `7 u j, U+ S# T" }9 C9 y+ [: u' o
hr = m_pDisp->Invoke(: h2 M2 V8 T$ u* c
requestID, . W _8 ~6 W6 B, k+ E IID_NULL,% S) I1 u L2 M& H
LOCALE_SYSTEM_DEFAULT,$ X- ?5 N t+ ]& A9 Z# f4 E- X9 X9 g
DISPATCH_METHOD, / b; q6 {2 R, M &dp2,* h8 l( g( O# _6 s/ ]( F# Z* S
&var, : Y* Y0 ^( f) x$ F &ei,7 ]9 n1 ~9 j) x/ H
&uiErr); 4 ^$ H; P8 h" K2 N6 m* P/ D' u& y" V3 s
SysFreeString(topicStr); d& {3 l# i2 v% p" v* D
SysFreeString(itemStr);& N) o& e- V4 ?+ v( Q, |0 c4 i
请问该程序是获得extend里面的哪个值?# o) T, U- _) J! t- o# y% A k
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????