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:' ]# A( f l9 {- g# W
Name = (WCHAR *) L"Poke";7 B7 r, [$ z8 H
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hr = m_pDisp->GetIDsOfNames (0 t6 ]" y' d# G( w6 n9 L
IID_NULL, // reserved2 }0 \. U6 E% P* e9 V7 D
&Name, // Array of names to get IDs for. u: q( M! p! a$ u( B
1, // # of names in the array 3 |8 t6 w) q' [ LOCALE_SYSTEM_DEFAULT, // System locale & @8 @' P `" y" W; W! [# f9 r &pokeID); // Array of IDs to fill on output : b6 h+ A9 d* k6 q$ I 6 X3 E2 j; S: ^
if (hr)0 y/ W {5 W" `) h
{ , z+ s- w5 N# O! f5 G$ r MessageBox ("Get Poke Unsuccessful"); 5 }% J/ m- _1 U% Q: {, y9 U return;3 K4 F( V/ x; n' @0 b
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/**************************传递数据给extend**************************************/" z+ U: G2 p- X+ \0 l) l7 |
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);$ h+ r. v2 ^; d1 H7 N. Q4 v i
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valueStr = SysAllocString((WCHAR *) L"1232");" }4 U4 J5 q4 C, y9 a7 B& e
VariantInit(&pokeVariant[0]); # ~/ G! O* O4 G) p4 ~
pokeVariant[0].vt = VT_BSTR;4 `5 a8 W2 N; O! J+ J& g% g% r
pokeVariant[0].bstrVal = valueStr; 7 c$ {; d: B, h: E5 |; ^8 e 6 D* Q0 ~; ?# @- G7 _3 C1 l' { itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); - D9 A, Q, Y3 M& A& q VariantInit(&pokeVariant[1]); , E# j3 g4 E2 H) a \; L pokeVariant[1].vt = VT_BSTR; ; @0 ]$ |* |4 N8 d5 p' ~ pokeVariant[1].bstrVal = itemStr;, t6 `0 l% q: {0 A4 b
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topicStr = SysAllocString((WCHAR *) L"system"); : `* B- j. ~0 k/ |/ i: ^ VariantInit(&pokeVariant[2]); ! Y, ], s! [9 F* C- ? pokeVariant[2].vt = VT_BSTR;7 I# L: ~ A) n, z
pokeVariant[2].bstrVal = topicStr;; n* a+ Z% L# U! P
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// Set the DISPPARAMS structure that holds the variant. f. u) j4 v' ~" F& m( [+ |( t$ E) V0 n
dp.rgvarg = pokeVariant;6 N5 N* B) J/ q% z9 n4 b, j
dp.cArgs = 3; ! F5 A. z* W- Z3 W. q& Z dp.rgdispidNamedArgs = NULL; 2 L9 R. [ p* L1 u3 t$ W dp.cNamedArgs = 0; 1 L* L2 a5 S. B; T3 v$ p R' x( S1 V( j: P1 k5 X
// Call IDispatch::Invoke() [/ u# r& B6 T( {3 N; \+ O& [: Q
8 i* O+ I2 B/ A$ g: U Q# y hr = m_pDisp->Invoke( 7 O; N. U0 Z7 ^3 e% }3 U( U pokeID, 5 S: i9 R* q# D6 F IID_NULL, 2 U; h( O! h! o4 P' A LOCALE_SYSTEM_DEFAULT, 4 L, D8 q3 P$ G" K) m) f8 ? DISPATCH_METHOD,* }) x4 o9 A/ U+ G
&dp,8 m. T, `8 Q( b9 }4 @$ h t% j
NULL,* S9 v9 X8 i2 d4 H: @( Y, Z
&ei, ( {4 W& d/ U+ e' \! w+ Q% j &uiErr); b# z. Y% O [ G
' W" N6 }' y* d( T SysFreeString(topicStr); ) N% P2 q9 U" f! f/ [% ^ SysFreeString(itemStr); 0 }( x- B- w7 d+ n SysFreeString(valueStr); 4 q$ B* E4 w" B4 c& q, L0 B! Q. G; u2 a
现在这个程序可以实现将1232这个数据发送到extend,extend有一个对话框弹出并出现1232这个数据,不知道这个对话框为什么会弹出并显示这个数据???& ]( _% [ D# L9 {! r# }1 G
此外我希望将这个数据赋给extend程序里面的一个变量,请问如何实现????( e2 V& h2 k0 `
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2.这是request的程序% [! J+ Y( N0 h. X* l
// Request a value from Extend" H( Q* V0 j6 P$ ~
//2 @" I f; _3 e3 J# N) w
// Initialize the variant that will hold the BSTR. Set the variant's $ `) g3 ?% Z0 q' D9 D* u0 e// type flag to indicate the fact that this variant holds a BSTR. Place the% U7 y; ^4 Z6 Y% \5 k6 z5 x0 h
// BSTR into the variant structure." X# l, N: }% t0 g/ {
4 t8 k+ W! e, h- n/ b requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); , _7 p" z; D4 r8 V1 s7 l# `- ] + }4 d# z' L2 w+ m p0 R
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");& I+ m/ e8 K1 [& v( l
VariantInit(&requestVariant[0]); 3 w8 @" F& J M S. t
requestVariant[0].vt = VT_BSTR; - g0 w& S2 o+ @4 E4 ~/ ] requestVariant[0].bstrVal = itemStr;7 a6 P) X; w4 a
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topicStr = SysAllocString((WCHAR *) L"system"); + A: X- y/ R3 v$ y4 p6 i: { VariantInit(&requestVariant[1]); 3 `/ i0 H9 n5 G. H, O
requestVariant[1].vt = VT_BSTR; 2 }: T+ |# b8 X& [ requestVariant[1].bstrVal = topicStr; $ c5 f/ P& n2 m( I ( O, W. i& m( o9 e" Z. E, I// Set the DISPPARAMS structure that holds the variant.8 ~' I. `$ Z7 V" `, s
8 a' E# o, n3 r" W8 s dp2.rgvarg = requestVariant; ; S' E" h1 _+ P, h' u! {2 ^5 G# g: b dp2.cArgs = 2; ; ^1 X7 l, l6 W6 B+ Y dp2.rgdispidNamedArgs = NULL; ^7 [. @& f; X9 B% n- S# |0 `. m
dp2.cNamedArgs = 0;% j/ ^ y0 Q9 h8 L& O
% l" `3 r( ?1 j, @' o var.vt = VT_EMPTY;$ z: T8 ]6 Z/ M& C! M