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& q/ G' B! _# gName = (WCHAR *) L"Poke";6 K- B( v* S, q" \
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hr = m_pDisp->GetIDsOfNames ( 2 G' v% G4 m! Y2 b7 k; V IID_NULL, // reserved C! t* W$ K6 d8 d5 F* H &Name, // Array of names to get IDs for0 U) j k' _$ v }/ m7 ?
1, // # of names in the array6 f. a" G& g" |) {$ z' ~- T
LOCALE_SYSTEM_DEFAULT, // System locale 3 e; H2 @; _- P/ e1 D. g/ M &pokeID); // Array of IDs to fill on output + F7 F& U [7 h% U! ]" f - h' O8 Q- C( i5 O# l/ `, ]' E0 T if (hr) ( f) o" Q8 _5 _1 U {' S" Y0 P1 \9 D4 |5 ]
MessageBox ("Get Poke Unsuccessful");( [8 R2 e$ ?4 h0 l. U' i
return; 8 i [- n. h6 ^8 _ } 2 k! W3 U0 y7 S * a* H2 c2 ?$ k' m5 V/**************************传递数据给extend**************************************/ . l; |" `" K$ H/ p( i$ U1 N$ e pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);0 ^4 t$ `1 B: U9 g
( V9 R, K$ v: O6 x5 ` valueStr = SysAllocString((WCHAR *) L"1232");" q+ I4 z* e0 _, m
VariantInit(&pokeVariant[0]); . C4 {+ B( s( `0 l" h( H9 j. v7 i9 c pokeVariant[0].vt = VT_BSTR; 9 M* |; \* p( g0 @3 P4 q2 V j- H pokeVariant[0].bstrVal = valueStr;2 [5 L+ i* a/ x5 E
( s3 }& l7 I5 @1 Q2 c/ J: V. A' ~ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 4 Z& \; [4 {) C- k' b, n VariantInit(&pokeVariant[1]); * |+ m. |8 n/ ]; Z% }4 { D pokeVariant[1].vt = VT_BSTR;4 t9 J1 w. Q4 S" a, M j6 p
pokeVariant[1].bstrVal = itemStr;& D. ^" _+ f1 V0 d3 N; s
: v& f, c7 F% l5 O; d topicStr = SysAllocString((WCHAR *) L"system"); 9 k% d8 d; X7 y( } VariantInit(&pokeVariant[2]); - {& w5 f: r/ G" U pokeVariant[2].vt = VT_BSTR; ) y( @) v- j4 q0 a$ S pokeVariant[2].bstrVal = topicStr;! Q, {( W. \) Z( W* K4 A
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// Set the DISPPARAMS structure that holds the variant. " I% v- m$ y* M$ U/ f. @/ R" O2 r% f9 a5 }& g1 _! a. s
dp.rgvarg = pokeVariant;, }9 q, x C! _ c% N6 ^1 @4 G6 }
dp.cArgs = 3;% e' p0 r' k B
dp.rgdispidNamedArgs = NULL;$ x/ Z U3 X3 Q) c9 ^, |
dp.cNamedArgs = 0; 9 N! O2 V0 B. M& K. Z" `3 F4 V1 v: W& s5 ^
// Call IDispatch::Invoke() # n/ S+ Q; C& o2 B% q h Q/ c7 N* a7 J0 e
hr = m_pDisp->Invoke(9 T% J# j# J6 M8 m( V
pokeID," G+ r5 g! L1 g" p5 l G
IID_NULL, 1 d/ Y) f9 {3 K& ~ n LOCALE_SYSTEM_DEFAULT," z( m, G" S/ M: X5 S* S
DISPATCH_METHOD,: e! L! b! t* M% o5 E8 _9 T0 z
&dp,' W. |- z9 Q3 m
NULL,' [6 ]3 @0 i8 J) ]
&ei,7 _/ l- ?- o9 x. x
&uiErr); " b7 v% W6 ?. W# u- F # b6 L# s9 s4 K& M: i7 y! c SysFreeString(topicStr);, Q0 C' \- K& j# M* F
SysFreeString(itemStr); + Y% S* s9 x1 R: b. T9 b$ X, | SysFreeString(valueStr);: M# {0 j v; w3 V: |( Q4 g
$ `1 _3 N5 p" Z+ r3 c0 k X* | % ?; _6 x& y5 j2.这是request的程序1 T V; h! e* k& I
// Request a value from Extend # ~' y4 T, u4 b3 R8 t# t: l: V//& P2 @ F! M$ C% ]- P& d
// Initialize the variant that will hold the BSTR. Set the variant's . w6 e7 A7 V4 R6 D3 C; h// type flag to indicate the fact that this variant holds a BSTR. Place the& d0 q E+ R% n# q) }6 V
// BSTR into the variant structure.+ n" ]/ g8 N. N& A8 H! v( {* ]1 B