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: 4 ^4 ] B! J+ ~) JName = (WCHAR *) L"Poke"; 9 e; \8 i/ h0 _3 T% j# ~5 ~ / I* r& [& \9 B6 J) J+ e q- Q$ D
hr = m_pDisp->GetIDsOfNames (; |8 O- @4 p% }! I
IID_NULL, // reserved/ q* T/ r* C1 ]! s' q
&Name, // Array of names to get IDs for4 R- ^+ N& S: a5 {8 P7 ?$ S( W
1, // # of names in the array' H, c& _7 _+ K1 U
LOCALE_SYSTEM_DEFAULT, // System locale , @4 {( P7 z. G$ u7 V5 X; G$ T) ^4 f &pokeID); // Array of IDs to fill on output- j% S4 A! C) G7 F! T/ _& E! ~
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if (hr)6 r* L& @- U2 q3 h0 L& h$ q, w) V( |
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MessageBox ("Get Poke Unsuccessful");' V4 V' I* z: B" l
return; & ~6 ~! }; N4 p6 ?% `; K4 m7 J! A } & c0 F* b& \- s 7 a5 W( O; J7 M1 a% [" I" z2 w+ f' a/**************************传递数据给extend**************************************/ " E0 o$ C' ~& r pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); & m# X5 ^# H4 K B/ I( M ) a, {) I+ ~) _( ] o6 X, v) V valueStr = SysAllocString((WCHAR *) L"1232"); % M) y1 I; S5 g* K VariantInit(&pokeVariant[0]); 8 N2 G3 B! a4 f' F7 y pokeVariant[0].vt = VT_BSTR;2 Z- C8 P1 R6 U) `3 o) D
pokeVariant[0].bstrVal = valueStr;) q% j' u2 E5 Z. t4 n
' Z" H3 ~; W0 F' V# P itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ' l8 s8 w" f" t6 o( E' ~; z VariantInit(&pokeVariant[1]); - J# e4 {; g- L7 x% X$ W
pokeVariant[1].vt = VT_BSTR;+ S) L: i( a; Y( y$ O' P4 a. Z
pokeVariant[1].bstrVal = itemStr;' p0 O9 J# L; y; h( K) v, w
$ a, s8 u( G& a9 ?) L2 X3 | topicStr = SysAllocString((WCHAR *) L"system"); ) K M- C& `. E VariantInit(&pokeVariant[2]); * I+ f) z1 ?" b$ G* u( l: S pokeVariant[2].vt = VT_BSTR;' d1 W2 |& \5 _6 Z5 w3 ~# q3 b
pokeVariant[2].bstrVal = topicStr; ; U8 g7 T( z: @8 Y( o5 _2 V; j9 X- h. h4 b$ ?+ Y( @! C
// Set the DISPPARAMS structure that holds the variant. ! E& \1 w s$ b5 S" C/ s$ k* A3 k: N5 C2 g" z7 Z% h a! S
dp.rgvarg = pokeVariant; 5 G. s8 ]% f9 L+ }4 d dp.cArgs = 3;6 o9 K) Q( ^" j( Q1 T
dp.rgdispidNamedArgs = NULL; n. b( K5 M! P
dp.cNamedArgs = 0; 4 V. B- L5 |) Q' m0 K5 h0 G4 t 0 W: p( J+ q; @2 z5 Y; D' a// Call IDispatch::Invoke() 4 _( t/ I Q' z V; f7 v9 e; Z. O8 k7 _: t
hr = m_pDisp->Invoke( ( B/ D% N1 t) N7 l3 S6 ^ pokeID, ) _) H' B, R' C! g% w6 |+ ~. a IID_NULL,2 I H8 c3 r5 }- ^2 a3 d ]7 z! l
LOCALE_SYSTEM_DEFAULT, % {: G& {8 M, ]$ t' V DISPATCH_METHOD, . F) J) m* ^) D& t &dp, 8 r- z* W" M+ D/ ^ NULL,! `7 f" U7 ~. r% ]
&ei, ! A! G) f! I B &uiErr);7 Z. t/ ]& I, H+ G0 N
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SysFreeString(topicStr);; B, s) m4 [7 e- B! j
SysFreeString(itemStr);, E- R& [! j, }9 x& {$ s9 _
SysFreeString(valueStr); 0 U/ s" h8 H, n4 w ; i( R5 c; S- {, \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??? 6 [* P) I! I9 _- E! z Y m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????5 b& }( y; R8 P0 ?; \8 M2 }
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7 O% T, Z: y$ u2.这是request的程序. K+ u' i# }) k) }% m" ]- G0 {! a
// Request a value from Extend 1 E$ r$ ?& G: N- M//) g2 V2 I; L7 f @: O2 S) t3 C3 A
// Initialize the variant that will hold the BSTR. Set the variant's7 a$ K8 m! m# u2 g6 S$ q' z% r% I8 k
// type flag to indicate the fact that this variant holds a BSTR. Place the + H: {+ n. v3 }// BSTR into the variant structure.3 y9 }/ _7 F1 Z ^6 X8 w
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ( G& [. t( I% D/ c# T ! f( `& b$ u, B7 m
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 0 ~& X( T$ w5 S1 ? VariantInit(&requestVariant[0]); 6 p& f1 t5 \- |2 _8 y7 \, ~, q
requestVariant[0].vt = VT_BSTR;3 R# A) d) \9 e f
requestVariant[0].bstrVal = itemStr;9 d7 e+ w1 I1 @5 l9 A
- y, u* a2 D% v' ` topicStr = SysAllocString((WCHAR *) L"system"); # k) G% L6 f0 y* q( O VariantInit(&requestVariant[1]); ' M& ?* h" H4 j1 I4 S- z% G9 O
requestVariant[1].vt = VT_BSTR;# B1 q! c6 r9 z- `8 A: `
requestVariant[1].bstrVal = topicStr; 5 A0 F! s) o+ l( Y# L # P% S3 V5 r0 V" b% a// Set the DISPPARAMS structure that holds the variant. 0 D; a3 q. N' R# I# r$ u$ o( s+ f& S" l* t7 }
dp2.rgvarg = requestVariant; $ J; c# }" ] ~7 z( U. g dp2.cArgs = 2;5 X; D% e% N5 f2 \' @
dp2.rgdispidNamedArgs = NULL;6 T; k7 R9 A" L' o. i
dp2.cNamedArgs = 0; 1 k \2 y/ z6 e( ?6 }# i+ r # L; M$ O" |6 j- P! w' E+ f. C/ e& F var.vt = VT_EMPTY;; _, a( v8 e- E2 h* ?, E1 H