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" s- C9 [$ {) I9 Y- e9 D! c# ]
Name = (WCHAR *) L"Poke"; % ?& @6 P+ w/ b* F8 N+ s + ~! m0 f4 S1 x! u L4 Z
hr = m_pDisp->GetIDsOfNames ( ; s( ]3 `# n; R8 T) v+ j IID_NULL, // reserved3 h0 P; L7 e0 j5 m q7 C( L/ s
&Name, // Array of names to get IDs for, _. W( [* |& G6 |, ?& b
1, // # of names in the array; e S& u2 u) O( k: N9 F t
LOCALE_SYSTEM_DEFAULT, // System locale/ P p: e2 w$ N0 Z! y8 h4 ~% P
&pokeID); // Array of IDs to fill on output5 P( D# _% _6 t7 B1 c$ d
0 y+ B5 r( q, F* v+ o: n, i+ l if (hr) / f; x' E8 t, M& r' X0 | {7 n, ^/ N% M; e/ X6 d
MessageBox ("Get Poke Unsuccessful"); 5 k' f& u& V3 W/ L6 J return;7 p1 }" D* B0 Z: t
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$ S- N6 P7 I' h# @% o/**************************传递数据给extend**************************************/ 4 C ~6 p0 v# h2 Q/ y pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ; o8 X! D# k( o, f0 ?/ D$ ^ * x8 X/ c. K, G& s, X1 S- b0 D
valueStr = SysAllocString((WCHAR *) L"1232");% J3 ` [& l- [* R2 ?$ x% Z
VariantInit(&pokeVariant[0]); 3 O" Y; h# e( T$ v: N
pokeVariant[0].vt = VT_BSTR;" w2 e( V( q0 G% Y! S% t8 ^' }9 N
pokeVariant[0].bstrVal = valueStr; - i5 v5 R% @. o. `- X ) V, p2 b9 R/ l3 q0 q- w. | Q1 f# t itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); # e) m" @# ]6 b8 x VariantInit(&pokeVariant[1]); * o* k! Q& p! a- p8 @9 G pokeVariant[1].vt = VT_BSTR;$ Q) R* d2 _' j- k( K8 S
pokeVariant[1].bstrVal = itemStr;# s E8 q6 G( L; }/ H+ h, ^4 `# Z
2 e/ o' `, r0 d' T topicStr = SysAllocString((WCHAR *) L"system");9 F8 y; U$ J. }
VariantInit(&pokeVariant[2]); 0 v( T' y7 J8 o# S7 V( D/ I- N pokeVariant[2].vt = VT_BSTR;) N H0 @* ]7 T: w2 ~6 o1 F8 Z
pokeVariant[2].bstrVal = topicStr;: ~5 S1 l! l7 h @7 O+ ?
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// Set the DISPPARAMS structure that holds the variant.8 m: n K7 r0 _. \6 u
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dp.rgvarg = pokeVariant;6 H* ?. ? K& \# ]- a' L
dp.cArgs = 3; ! q: \* h" f2 w- V dp.rgdispidNamedArgs = NULL; 6 t O) e* V' b( L dp.cNamedArgs = 0;! q, S/ J* X- ^6 _& i, U! y
; W% t. j ?8 e: G' n- X, x- I$ a// Call IDispatch::Invoke() 2 j3 q) V; i$ ]5 H8 n7 j( q4 F2 q1 U# T9 M$ U7 G
hr = m_pDisp->Invoke( % j$ R N) l. A! ]' y: s3 @3 F+ M, ?1 I pokeID, + I9 b1 {# j% Y$ E: x7 u$ F9 Y* b IID_NULL,) Z8 V: n9 m' d. B8 N6 x
LOCALE_SYSTEM_DEFAULT, 2 Z, k) u K) p( q' h. x DISPATCH_METHOD,' k, v, p. `& w3 @3 T7 a) Z7 C2 | J9 ^
&dp, ) n5 g6 x- \4 f: F5 A7 s NULL, ( S; R" X0 U) ^9 ]5 S) j* g &ei, w+ u$ s/ b R2 \' I
&uiErr); & l2 J# B4 o. z2 M+ b0 [ \% t0 A2 z7 ]; Z# f. c! d5 z
SysFreeString(topicStr);4 u K) C% p# N4 w) Q q% X
SysFreeString(itemStr); ; |9 D- o1 Z4 \5 v; T* d SysFreeString(valueStr);& A1 [$ k$ Y/ M
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2.这是request的程序 9 ^6 T+ s( [, @, F" K( P// Request a value from Extend, x: C5 d/ c4 u. ]7 ]
//! H1 F* w5 r/ ?/ I
// Initialize the variant that will hold the BSTR. Set the variant's 1 w+ F1 @5 T( ]7 T// type flag to indicate the fact that this variant holds a BSTR. Place the3 i/ J' T$ r U4 ~
// BSTR into the variant structure. 6 K {4 |+ T3 [$ e% F7 _) w8 B$ F4 K. _ G: u6 A4 x- n" t
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); $ k- ~5 y+ }; l4 n 1 [1 m! |& } z; i8 p/ @* K7 L itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");; O' @( m. C( O; x% ~0 B/ G
VariantInit(&requestVariant[0]); ' L j" A, m A requestVariant[0].vt = VT_BSTR; 5 F1 y6 T2 f3 x7 I' ]" G+ d requestVariant[0].bstrVal = itemStr; ( a; P# I9 T! u2 R! p9 {. @' i N" O" p
topicStr = SysAllocString((WCHAR *) L"system"); 6 F+ j% c- @/ u d VariantInit(&requestVariant[1]); + d; C0 p6 I! t' K. o& o requestVariant[1].vt = VT_BSTR; * {0 S. w3 B! y: [3 J7 b# X1 H9 T% N requestVariant[1].bstrVal = topicStr;0 D! b7 R8 Y' X% a' D
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// Set the DISPPARAMS structure that holds the variant. 4 d; a% T m4 | M ' j" @* a( V# ]8 z/ {# Z6 t; o& I1 z dp2.rgvarg = requestVariant;. d" I8 i& d4 h! N
dp2.cArgs = 2; + c) h, _8 [5 } dp2.rgdispidNamedArgs = NULL; 2 [* N' `, Y0 r, u dp2.cNamedArgs = 0;1 c) ~) E( \+ Z; q+ O
: }# ^; b& S& F9 V) \# s, j2 u var.vt = VT_EMPTY;) n& E# ~/ M( f/ ]4 M5 B
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// Call IDispatch::Invoke()3 @" t3 ?% }4 b' W% }# M+ c