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： * ]) g r/ {& S; [1 }Name = (WCHAR *) L"Poke";3 \# J% R' a' B
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hr = m_pDisp->GetIDsOfNames ( 6 [0 _! d3 r( {7 d* c( G IID_NULL, // reserved/ O, m( U( {2 L
&Name, // Array of names to get IDs for % a$ t/ N1 X6 K' n" A( p1 r 1, // # of names in the array , F4 g) l: W! g* S LOCALE_SYSTEM_DEFAULT, // System locale+ ^# i3 T$ v/ \4 O r0 p
&pokeID); // Array of IDs to fill on output7 U$ B7 P/ i. r
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if (hr)/ v& B8 y9 N+ s+ L5 S) w! M2 L6 J) `
{ 4 _& p! e8 O" w9 `! @+ {7 X MessageBox ("Get Poke Unsuccessful"); 0 V: v* Y5 w# {3 v9 ~3 G# m8 e return;0 d" ?6 s1 F- C8 G, t) Y3 L
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/**************************传递数据给extend**************************************/ : m4 o2 G1 n- K5 c8 ~1 d0 T. _ pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); + S2 a$ b! Y6 a2 ?: i 9 m/ D6 p# l/ n( f$ Y valueStr = SysAllocString((WCHAR *) L"1232"); ; c w- u1 R A( ], ~% P9 Y8 v VariantInit(&pokeVariant[0]); 7 c: X' N" u/ |. r
pokeVariant[0].vt = VT_BSTR;* A5 `- k2 a# V" z0 X
pokeVariant[0].bstrVal = valueStr;7 u; p8 ]5 f$ m) u
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); + C8 I( i" {5 N* i" e' z2 A! j VariantInit(&pokeVariant[1]); ; Q2 g) Q/ w) y( O. T! I# C) r pokeVariant[1].vt = VT_BSTR;/ ~; ]3 E: G& M" ]: Z5 h4 K( W
pokeVariant[1].bstrVal = itemStr; : d0 w* x* A) c+ D* P0 _8 M5 Y, m, a+ D
topicStr = SysAllocString((WCHAR *) L"system"); * z! [7 d, g5 }+ m9 p- L( K* ~* I VariantInit(&pokeVariant[2]); L# e2 t. q# t+ d9 \' k
pokeVariant[2].vt = VT_BSTR; 8 @, c. b; L" G4 g) T0 V8 F pokeVariant[2].bstrVal = topicStr;. }4 Q, Z( J+ x! m3 D, f
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// Set the DISPPARAMS structure that holds the variant. + B& Z. V: b( v5 G1 }4 _- h) O: H6 m8 D
dp.rgvarg = pokeVariant; 6 P: f4 t ?9 _$ e dp.cArgs = 3; 5 X- e- E# H2 S& L( S% g0 B dp.rgdispidNamedArgs = NULL;2 O/ s# H( {8 ^! N# @
dp.cNamedArgs = 0; 5 r* R. m5 N4 T9 C, E7 B- B% o8 I6 F7 j) L. \! S. G
// Call IDispatch::Invoke() 8 A9 U' G/ I9 i6 U3 B $ `( [0 ^! o- W- a hr = m_pDisp->Invoke( , ` ?: F4 P3 c/ T6 F$ N" F pokeID, , z. @) C5 F5 J( f IID_NULL,1 I: ^1 B6 t; B5 w0 v3 d
LOCALE_SYSTEM_DEFAULT, " B" Q7 @) Z* j DISPATCH_METHOD, 6 s; Y- v. r0 l8 J &dp,3 F" X! R2 T* F0 T/ M
NULL, / k1 B* i/ F9 N& x' e" w &ei,! }$ ^; h$ C3 p0 w3 u) \* |* X
&uiErr); 1 b1 G1 B& O- g2 U3 u6 i5 G! B9 q) ^& d5 f5 f% e' m8 _
SysFreeString(topicStr); " ~; p$ \) E( g/ g) f SysFreeString(itemStr); 5 f) e2 k5 b4 f" N4 O& Z% r+ ? SysFreeString(valueStr); " h p$ y* E6 X9 U$ z9 H , M0 n8 P/ f. v; F& y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？？？ - Q8 v4 a+ f. I0 ~- _; O8 b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？？？？ @- C, {& x0 V, E- O
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: B/ `, r) z* ~# T( }* h2 t# n: \2.这是request的程序 ' O# Y" E. @* C( k// Request a value from Extend & H1 H' N. _+ ~( Z4 @//& r# A) N# t3 l+ k- ~
// Initialize the variant that will hold the BSTR. Set the variant's8 T2 Z6 e- l: m
// type flag to indicate the fact that this variant holds a BSTR. Place the 5 U: C( |6 ^1 m, g- ?8 d// BSTR into the variant structure.! {) a. R% @+ I
5 k s3 [: k$ U requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);. ?4 F) v. P+ T8 u7 U
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ! [0 J @' Y! U) J) V% a1 l- H VariantInit(&requestVariant[0]); ! R( b, ? n4 u3 o+ k
requestVariant[0].vt = VT_BSTR; x' j9 X* ~: u" L* s. U! Q% ~) @ requestVariant[0].bstrVal = itemStr; , L, \* j3 P/ X j; M: ?% X0 ]5 D9 C9 U
topicStr = SysAllocString((WCHAR *) L"system"); : |' G6 d5 s/ c c6 y/ B9 l; _ VariantInit(&requestVariant[1]); 8 W' t5 c2 j) f6 l
requestVariant[1].vt = VT_BSTR; # ~' O7 V" W& o8 t) J& x* n0 k2 L requestVariant[1].bstrVal = topicStr; ( P Z1 {$ T+ x/ c W5 r0 f4 ?. J- A; i( k/ i+ z& V
// Set the DISPPARAMS structure that holds the variant.) e) k& e3 D% f" }% x# d
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dp2.rgvarg = requestVariant; 9 N, X4 Y! M& A( f q# ]* d; m dp2.cArgs = 2; : Y1 x1 V9 r/ L& p/ `( } dp2.rgdispidNamedArgs = NULL; W. c8 q: N4 w& G N, @
dp2.cNamedArgs = 0;( q. W; U- Y1 r; b* G" X
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var.vt = VT_EMPTY; 8 Z8 i% H4 \! m- g( o+ F# c5 b2 _ 4 ~4 N% I1 e! G; c// Call IDispatch::Invoke() S: w( A4 A% i
发表于 2008-11-25 19:37:03
