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: ' H9 U @/ r. h( i0 d. ]4 |9 ]Name = (WCHAR *) L"Poke";. L% s8 J0 |" X) w% y
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hr = m_pDisp->GetIDsOfNames (/ v# }1 H d. [2 {4 j# G3 | ]" G/ J
IID_NULL, // reserved 0 G8 u) R9 g" A4 d- S &Name, // Array of names to get IDs for 8 o0 O; I9 }" l5 o1 @ 1, // # of names in the array% r- y% p& {! K- h8 R* q4 P3 H
LOCALE_SYSTEM_DEFAULT, // System locale ; B$ G* [( E1 B( f/ ~- t* D: h: O &pokeID); // Array of IDs to fill on output " n) ]. U; Q1 N Q( Q8 k6 J% B, x1 N. ] if (hr) + ?- R. i, b8 g& J" e8 x. ?1 j {% E+ E$ N& @$ c; l% E
MessageBox ("Get Poke Unsuccessful"); }$ D# D- j" s1 x( {; P( c" c4 k return; # I) F$ i* g: U8 }7 n4 O5 J3 J; D }/ x: v$ S9 K- Z5 G
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/**************************传递数据给extend**************************************/' h) ^0 z3 Y, ^) {1 d
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); : T+ Y! W) P! o$ k5 c7 ] * G7 ^. [1 S; V$ i, G% E
valueStr = SysAllocString((WCHAR *) L"1232"); 0 t: @ t5 I4 X& t9 e VariantInit(&pokeVariant[0]); : {6 J3 \8 ^/ }1 x! Q$ v# T) [
pokeVariant[0].vt = VT_BSTR; ( o0 f( R1 k9 X7 d, _ pokeVariant[0].bstrVal = valueStr;$ l+ q# I4 G5 t9 D& s( x$ X X
! F8 z P, w# z. a4 ^& | itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");9 Z; M' E9 X `$ S
VariantInit(&pokeVariant[1]); . O( \' O( t2 |$ Q0 g+ m" j
pokeVariant[1].vt = VT_BSTR;+ {4 x) p0 ^" Z. q
pokeVariant[1].bstrVal = itemStr; % w- }3 }0 r |! O& X8 M1 A! `, u$ T8 |! q% m' o, v2 w( J
topicStr = SysAllocString((WCHAR *) L"system");- Z# p- S* I5 N
VariantInit(&pokeVariant[2]); 9 Y& n, G+ r# c7 {1 O
pokeVariant[2].vt = VT_BSTR;3 P, A" r5 F- w2 A/ l; j1 r) m
pokeVariant[2].bstrVal = topicStr;: E, p3 F- K8 b4 ?) _& [2 L& g/ g
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// Set the DISPPARAMS structure that holds the variant.8 X4 Y, }) n) g- P
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dp.rgvarg = pokeVariant;0 [1 `6 V; f) ?* w+ i! U0 O
dp.cArgs = 3;% `# {& \: z0 D0 c/ n, Y0 i
dp.rgdispidNamedArgs = NULL; $ L* g4 O" e) \; k/ a7 X2 m9 _ dp.cNamedArgs = 0;) S5 p3 o$ P- T5 N
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// Call IDispatch::Invoke()$ l& Z- A0 Q3 T( d4 \' h) ?- z7 ^1 U
# d2 P3 }8 x0 Z( F hr = m_pDisp->Invoke(9 u8 U6 W5 M) e6 C
pokeID, 2 Y& {# Y* `/ Y# T IID_NULL,+ Y. D T/ z% N1 F4 h
LOCALE_SYSTEM_DEFAULT,( G$ A, P1 H3 J8 A! t Z
DISPATCH_METHOD,# B9 [1 z. U, \; E
&dp, / R, N/ b. ] j NULL, $ X k# W3 t* D; H &ei,3 _, w1 i4 `3 j, H {9 b
&uiErr);1 Y1 u$ @5 _2 u' U" q; v3 H# H
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2.这是request的程序 6 Q+ C; y5 v( n: U; h4 d; k7 Q// Request a value from Extend ) u( u" z6 f/ S//9 {# X: @0 F, `! Q' R: S
// Initialize the variant that will hold the BSTR. Set the variant's% s: B) _1 f, ^2 }: p0 m
// type flag to indicate the fact that this variant holds a BSTR. Place the # ~3 N: n7 j$ _ U& Y: O" a& `, T" m// BSTR into the variant structure. - @% i" Z4 X/ E' J 3 a G+ f2 d. K9 @- C requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);; U s& Z ~) j8 |7 N& L: a/ {
4 u+ g9 T Y+ W) T1 @ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");9 j% |6 D3 f) L& \, y/ `. u" X, b! g
VariantInit(&requestVariant[0]); , e: G* J8 ?& T! N requestVariant[0].vt = VT_BSTR;- l0 M; P& Q/ A, y8 [1 C
requestVariant[0].bstrVal = itemStr; ! [" D, w, B- }- F3 K7 K9 T; b! y" e6 i# d5 e
topicStr = SysAllocString((WCHAR *) L"system"); 4 R& t3 S2 b) Y7 k# F( d VariantInit(&requestVariant[1]); - D$ z" l- W* S
requestVariant[1].vt = VT_BSTR;8 o; T: n! d* I% q0 z
requestVariant[1].bstrVal = topicStr; 9 a/ |- C; r' s- ], @. [" T1 I+ Y/ d# f I) C% w* N
// Set the DISPPARAMS structure that holds the variant. % F( d! F9 r O; `0 [, z# }; d: [6 L+ l Y- t% U1 g3 }+ R8 i
dp2.rgvarg = requestVariant;+ N0 b, X$ q1 u# N
dp2.cArgs = 2; W$ m' H, K% k3 p& Q: Y; J
dp2.rgdispidNamedArgs = NULL;+ G3 m/ ^5 ]4 ~! h8 n1 ?' x/ x
dp2.cNamedArgs = 0; * I" z- k! t6 V: o5 }. l 4 [* w( O: r# i- V var.vt = VT_EMPTY; 3 B0 B* H' F9 u+ y9 B/ F4 r7 ~" ~; V * q4 o2 R7 ] Y6 y: O- C& K+ w// Call IDispatch::Invoke()) o0 W" M/ a$ O4 V( }" W/ g
2 N2 i3 ?. [1 f4 S8 S6 L+ F& O9 A1 _ hr = m_pDisp->Invoke( 7 g! g$ t8 {; ~$ h) ^ requestID,. D5 r% v* ?4 X
IID_NULL, " z8 ?+ ]' e' A! o" I! f LOCALE_SYSTEM_DEFAULT,- |5 E9 X0 i7 A# x" X4 u( c7 H% E
DISPATCH_METHOD, C* L5 p. L7 E &dp2, 4 J7 I) N8 {% o &var,& w* O8 J+ c/ d9 D! Q& P7 g
&ei,3 ]4 a$ x1 l% t
&uiErr);; B% |- s+ c8 m+ D( B$ h