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:0 g) c t {, v+ z; D' d
Name = (WCHAR *) L"Poke";$ [4 I0 E4 w* E) z, l% C: I, g" b
- s9 D# s; D2 R G3 U/ L hr = m_pDisp->GetIDsOfNames (0 g; L$ x; f2 J
IID_NULL, // reserved/ k) P. X; }1 S$ g' e% g2 n
&Name, // Array of names to get IDs for " ^- v3 ~) ` e+ e1 p 1, // # of names in the array * D. V7 F$ e' W+ u0 S% v LOCALE_SYSTEM_DEFAULT, // System locale6 g0 H! g; y2 K
&pokeID); // Array of IDs to fill on output 0 q+ }6 Q8 G6 J( M* h2 S) X 9 a9 x: @* J: D0 P if (hr) ) ~- {" Z- z5 H! H' T' v { ! C/ z3 k4 i- d( w MessageBox ("Get Poke Unsuccessful"); + Q$ _ c* {, m7 q: K \/ w& w return; 6 O7 s2 g, p. [8 M } 7 W; @6 c9 R4 _4 `5 v" O8 k- F2 I7 R5 C9 ~2 K) X
/**************************传递数据给extend**************************************/ J/ [4 B2 W0 w7 i+ l0 e# ] pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 2 Y) S7 A+ J; D+ I7 v- T! u ! V- z7 W& B+ r2 R% Y6 d
valueStr = SysAllocString((WCHAR *) L"1232"); # x0 L) T6 R. J8 Q9 J {8 b/ P7 f VariantInit(&pokeVariant[0]); 6 n' b g6 M- y7 L/ A2 w
pokeVariant[0].vt = VT_BSTR;2 b V& y; c! {
pokeVariant[0].bstrVal = valueStr; 4 I9 g; |0 H; ^9 v/ t Q 6 Q5 c- d/ c. f4 w' t7 W- i! g itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 2 f' Z! V, U$ \+ E; s VariantInit(&pokeVariant[1]); ' h; c, |, j( O+ w4 x3 x pokeVariant[1].vt = VT_BSTR;. ]# o) z/ D$ _- e
pokeVariant[1].bstrVal = itemStr; - P! {3 k/ C0 u) F 0 ^1 d* S2 T4 i% ^0 | topicStr = SysAllocString((WCHAR *) L"system"); 2 H0 a+ c, l+ s! p VariantInit(&pokeVariant[2]); ; l" p8 D5 i5 G' x' _; ^/ E8 W pokeVariant[2].vt = VT_BSTR;4 ]- h* z' r' S$ Q0 Z- K
pokeVariant[2].bstrVal = topicStr;+ ?5 y( |. b3 I5 L- R
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// Set the DISPPARAMS structure that holds the variant.5 g+ M) U/ [) I+ q# T0 \, ^
& P& G% n4 Z4 _9 b+ e& j
dp.rgvarg = pokeVariant; " p5 O: ?0 O6 A8 E( Z dp.cArgs = 3;9 f( w/ Y/ \9 [& N& N2 H( U
dp.rgdispidNamedArgs = NULL;1 X4 k% ^5 Q, [+ `% W1 I
dp.cNamedArgs = 0; % _# k* W8 ^: R2 m& G) l - @9 e& g) V9 P; V" o! L% z// Call IDispatch::Invoke()( ~8 @. @+ u% P7 ?$ |4 A
+ ]& E4 x6 S2 d4 x hr = m_pDisp->Invoke($ M. Y- B9 N O8 r" _
pokeID,0 z3 |% m" ?' q& L) j5 c: Y% n
IID_NULL, & O3 n0 ]' F6 k6 H1 r LOCALE_SYSTEM_DEFAULT,( b8 D( A# `# A' u8 e
DISPATCH_METHOD,7 {) Y. c: L$ @6 `/ K0 Z/ w% L
&dp, - L5 L' L6 e, i% P NULL, ' S4 w8 b b6 w3 @ &ei, , T$ T+ j( @3 t &uiErr);5 L3 T) S' c q/ a
# A8 S: X4 l% ]# ]! J6 \3 C2.这是request的程序" Q, ^. ~: }1 I5 [" V' H/ ]
// Request a value from Extend - R& u2 O% e4 c// 1 A. f8 ]8 t/ T/ m9 y2 P// Initialize the variant that will hold the BSTR. Set the variant's$ G1 o5 s% M: \; e, B' u
// type flag to indicate the fact that this variant holds a BSTR. Place the 1 @6 ?# Y6 }: {8 j2 d// BSTR into the variant structure. 5 W, N/ t- \+ [1 S ' y1 ^3 U; z% U n5 n0 t requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); * y, }/ s9 P7 I8 E/ ~ 8 [' O7 U6 L1 d, c# S& C4 D; F, P
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");9 P5 z* m8 H7 |" _. ]* x0 M
VariantInit(&requestVariant[0]); % b2 n) M& m3 _3 H1 {/ Q0 r3 d! q requestVariant[0].vt = VT_BSTR;, k: Z, U6 M, v1 O
requestVariant[0].bstrVal = itemStr;5 \4 I r; h) E2 i( z0 B
2 M2 \* I) R# _' G topicStr = SysAllocString((WCHAR *) L"system");" T1 Y* _; z8 \
VariantInit(&requestVariant[1]); : }5 d$ ^* N! b, s. I requestVariant[1].vt = VT_BSTR;: p0 x% h3 w0 z, y0 W: T
requestVariant[1].bstrVal = topicStr; 3 M7 J$ {4 l- q / t" v5 B! s& s& I# L// Set the DISPPARAMS structure that holds the variant. , ? [0 j) s8 y+ O, q4 E L7 q4 m) z H' Q5 G" ?
dp2.rgvarg = requestVariant; 7 m! Z, I. M* C! j dp2.cArgs = 2;8 I3 C E$ r/ ?0 t4 \) J [" m) U9 _
dp2.rgdispidNamedArgs = NULL; * D# w( z; o5 x1 I5 p. j" F. n+ e dp2.cNamedArgs = 0; 0 R: }0 {. r' {3 W+ B1 `/ p- ~: u2 f; i % ^- Z9 _- d( m5 m var.vt = VT_EMPTY; ! b* c0 H9 r' _# f% a6 K9 `+ d% n! d2 @6 b e- d: a, A
// Call IDispatch::Invoke() 0 B* S% x( _/ B# i1 @. R& C U9 Z; Y* u2 x# g) B* h
hr = m_pDisp->Invoke($ p# }2 d h' ?
requestID,6 h7 p- @& f# e2 ?
IID_NULL,- {5 }9 Q' d9 I: ^9 s
LOCALE_SYSTEM_DEFAULT,9 [, x9 H: I9 A9 B- B4 N6 s
DISPATCH_METHOD, 8 I: V& X" u5 Q8 q- Q$ `. ] &dp2, ; Y7 o9 ]+ G9 h. a &var, 8 o( Q& S, I; i! k- Q. _7 v &ei,1 }/ J/ z' [6 S" h# f4 I& {- F) ^
&uiErr);5 n) {. b( ]% e3 y) I2 [) @& ~
( T. S4 F& d2 f; [; b' u- U/ i SysFreeString(topicStr); $ `1 p J* ~8 q$ j6 i/ B9 @ SysFreeString(itemStr);" P5 z! B+ H2 s/ q$ z
请问该程序是获得extend里面的哪个值?7 ?; K3 V1 J A9 L
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????