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:+ B {$ p9 e! [2 E: l' u+ @! s
Name = (WCHAR *) L"Poke"; 4 e- r9 n# r6 s8 x+ G1 C % R% Z6 c' _# q( G% n9 {
hr = m_pDisp->GetIDsOfNames (2 G$ E/ h7 K2 S
IID_NULL, // reserved0 t5 A1 Z Q2 Q7 r5 D# M
&Name, // Array of names to get IDs for5 Z1 D% u }) N/ W
1, // # of names in the array' H! O& L. x$ r/ b
LOCALE_SYSTEM_DEFAULT, // System locale5 g0 U$ ^4 e, f+ v. A5 E. O
&pokeID); // Array of IDs to fill on output $ p8 r5 c( j. j6 D! `* j. H , f5 H5 L. _* K6 u& G
if (hr)5 w' E" {* m" g0 L, W
{6 e2 k2 o0 H8 ]. A) {" ~7 e
MessageBox ("Get Poke Unsuccessful"); # n+ ?, G M! N3 \* h0 t4 [6 j return;& f' a0 S7 ]4 v9 ~
}- {$ C C: P9 Y
; z; e/ s( N& e* f/**************************传递数据给extend**************************************/ `9 Z F# U K; i* C- K pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 5 W" T9 \' E5 t# W- j& U 6 D6 v6 d' I9 l- z- F5 s5 [ valueStr = SysAllocString((WCHAR *) L"1232"); 5 w* l9 R8 }( Y$ Q: e VariantInit(&pokeVariant[0]); * I0 U! j. J$ Z pokeVariant[0].vt = VT_BSTR;( t5 G; n# S8 a* i! ^
pokeVariant[0].bstrVal = valueStr; 9 K% N3 N6 f+ |: _ ^6 U; ~6 `$ q1 _! t8 G$ r itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");3 b5 \! r1 w- |7 w. J
VariantInit(&pokeVariant[1]); & } F1 U, i: V! W+ S8 r: `1 X
pokeVariant[1].vt = VT_BSTR;9 Z% n0 H8 R; N1 b; l5 o5 D# y: }
pokeVariant[1].bstrVal = itemStr; 8 f H6 J! n5 t5 z# }: f 9 a9 g& g; c0 P3 b0 W1 J topicStr = SysAllocString((WCHAR *) L"system"); ! p( Q& M& F7 s% u' o* j5 b* P VariantInit(&pokeVariant[2]); - o2 J* t% Y Y s
pokeVariant[2].vt = VT_BSTR; 8 `7 T4 t0 z j pokeVariant[2].bstrVal = topicStr;1 U m+ w& _6 G: D) \8 N" l' J! }
) p& i" S+ D% l3 `// Set the DISPPARAMS structure that holds the variant. 8 ^2 l1 \) @: W! ~ i0 y, X & j. ~' Z2 A1 D1 \7 I1 L% R! V6 @ dp.rgvarg = pokeVariant;* \5 O& a, P R' ?
dp.cArgs = 3;0 R6 Q7 {4 }: k
dp.rgdispidNamedArgs = NULL;' Z% m* v$ o9 w* U5 Z& ~
dp.cNamedArgs = 0; 7 {) |& r4 G3 r ; i* o P9 {4 V// Call IDispatch::Invoke()6 D; z( o% `" F' n9 [' @
: _5 C1 J# Q; J$ f! e hr = m_pDisp->Invoke(& ~, @& I' l) N
pokeID,! c/ q: n6 U6 S5 P' z4 P
IID_NULL,1 E) s* I, |+ H, U% _* l L
LOCALE_SYSTEM_DEFAULT,0 T4 b7 P& P( J) ]3 d
DISPATCH_METHOD,, X2 X1 i5 \, x0 p$ _/ V
&dp, 9 w+ W# n5 O+ F% q& x: N NULL,# U: L& X; H2 W; E3 o
&ei,+ V% ?0 e( Z' ] l
&uiErr);3 `2 V. X9 w$ I0 e6 ]/ h) N% d' ]
- m. t7 ~9 T& N8 U5 v3 \7 B7 l SysFreeString(topicStr);) b- p, a% Y3 m/ c; E, U
SysFreeString(itemStr); - Q1 r/ H* u6 \ SysFreeString(valueStr);5 P+ ~3 I- M( W$ i2 j4 ^, z
8 U0 C8 D) u/ h. j; l2.这是request的程序 ' _; }0 h1 _' _5 F// Request a value from Extend0 }) |' O6 s& h) I) F3 ~
// 7 T9 U6 M- G1 D3 x) D1 E( [// Initialize the variant that will hold the BSTR. Set the variant's0 y v1 e) M7 O' I h" m
// type flag to indicate the fact that this variant holds a BSTR. Place the & m3 r5 \+ ^* p i# s9 B( u! _1 H// BSTR into the variant structure. t6 @4 f- x8 k) w
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);# t% Y$ |) N7 K
) m5 U; q1 e' L$ ~ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");* Z5 e2 d7 E' A- j8 T4 d5 G
VariantInit(&requestVariant[0]); 4 c% T1 A: S( k _+ Y" D requestVariant[0].vt = VT_BSTR; " Z% G9 d- U* Z) w, G( Z* M- f; Y requestVariant[0].bstrVal = itemStr;4 {' t) w: K+ K. u
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topicStr = SysAllocString((WCHAR *) L"system");% {% n; `8 g" k0 e
VariantInit(&requestVariant[1]); : D# h9 u$ b; N/ w" N. M% r. e K, J requestVariant[1].vt = VT_BSTR; ! |" I- h J! ], b2 v4 o requestVariant[1].bstrVal = topicStr; ! D, H6 m" x5 U x `. w- ^. B- D, }, H& I8 G; Q
// Set the DISPPARAMS structure that holds the variant. ( ^0 ?! M2 U3 D1 ]7 { $ i- k1 Z2 h2 A8 ]1 w; D dp2.rgvarg = requestVariant; ; z5 b( U5 r! S3 u+ e7 Z dp2.cArgs = 2; + R2 o8 O3 C" U c" \7 O1 r dp2.rgdispidNamedArgs = NULL;" \' V' p p% a$ E: `% ?
dp2.cNamedArgs = 0;$ l7 v4 x7 \5 Q
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var.vt = VT_EMPTY;, ?2 f _0 ?) t1 [0 s( O R" M
( F: W, C1 r& q3 j- i// Call IDispatch::Invoke()' l- D( O9 ?9 Y6 R
. {# A6 t8 u- R
hr = m_pDisp->Invoke(0 m& P$ W+ W- M& E
requestID,- `: j. {! l n, C1 d
IID_NULL, % N; n9 P2 n4 g& w LOCALE_SYSTEM_DEFAULT, 7 c2 B5 U2 ~& ~; S2 g# q) W DISPATCH_METHOD,6 O: M: N2 v2 M) v3 Y2 R9 J: G
&dp2, 2 _/ u0 ?4 Y' ~, a! U! x &var, , h$ Z( W9 L6 b: I &ei, 1 \0 m: ]! N' U f w &uiErr); 9 r0 a/ V. n2 f% l+ |$ z0 ~/ s+ J1 Q( J% r6 V) w! o# b
SysFreeString(topicStr);; c* y& T: k. T
SysFreeString(itemStr);$ A/ f8 }4 b* Q2 u( h8 g% |
请问该程序是获得extend里面的哪个值? . T9 k8 ]. c& A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????