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: * N% O, n4 U0 u7 e4 Z1 {Name = (WCHAR *) L"Poke"; V3 s8 J0 Y* C0 N, Z/ I& q! h( p
: k$ P( x' c0 H5 K& I2 s2 X& i5 U) o hr = m_pDisp->GetIDsOfNames ( $ c4 r3 r" Z( Z7 I' Z; ^$ x ? IID_NULL, // reserved " k' f6 I/ {' D1 i7 e &Name, // Array of names to get IDs for ; l2 `/ o5 K4 L, R$ d0 {. M% ^ 1, // # of names in the array ) u% \- F% v9 d& p) b' q/ h5 O LOCALE_SYSTEM_DEFAULT, // System locale ' o( c7 G$ f* O* X% Q2 F" o &pokeID); // Array of IDs to fill on output( {. W) g, U* m
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if (hr) + V* H( ?. a+ b5 t# u2 A { 8 N; ^8 m0 Z# g; Z! G3 V MessageBox ("Get Poke Unsuccessful"); A! v. F {5 m5 S/ Q- n5 } return;- c; W9 d" a9 G& \. Q0 l7 ]
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/**************************传递数据给extend**************************************/ 8 K8 P1 b# a' {1 l4 q, E$ p" j' H pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 7 z9 c" t5 _* }5 `& V & U) G& V, d- o) r, U valueStr = SysAllocString((WCHAR *) L"1232"); 9 S p0 x z0 d0 z VariantInit(&pokeVariant[0]); 4 h# z, W. h4 u }* @
pokeVariant[0].vt = VT_BSTR; 5 g6 X* E1 [8 s( n pokeVariant[0].bstrVal = valueStr; % d4 j% l' E( q' z% f( m" N6 V; w7 e+ x" a' s$ ]- @5 I+ q
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");3 G2 V% s& q, t2 \9 j' C
VariantInit(&pokeVariant[1]); 7 C) m. O! j8 h# t9 o1 c; d7 |
pokeVariant[1].vt = VT_BSTR; 3 p# _: L1 ]6 {, I pokeVariant[1].bstrVal = itemStr;6 Y E- z% V; j
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topicStr = SysAllocString((WCHAR *) L"system"); : O! \: u- p& f' x, l VariantInit(&pokeVariant[2]); n' j# m7 g. b0 K9 n pokeVariant[2].vt = VT_BSTR;7 R7 P& f( ] y6 C* K
pokeVariant[2].bstrVal = topicStr;! ~* Y8 G$ L* f9 s
+ z$ P6 g' y. d// Set the DISPPARAMS structure that holds the variant.1 Y- Y6 z& P/ o
|) N& t) l- { dp.rgvarg = pokeVariant;; e' M7 g( `' z, ]3 _
dp.cArgs = 3; W8 b, Q! R5 h3 ~% C$ h! S* V$ R
dp.rgdispidNamedArgs = NULL; 5 p3 a- M/ O; N+ f. r dp.cNamedArgs = 0;3 X$ \; n% ~& C2 ]& r( N
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// Call IDispatch::Invoke()/ q P) P$ f$ _8 }* B+ `
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hr = m_pDisp->Invoke(% g X& n% h$ ^: _! v { r0 O
pokeID,2 e% E$ E: E- D y
IID_NULL,, j) U9 ]* i# `
LOCALE_SYSTEM_DEFAULT, ; @8 M# |5 R$ x+ P* E( f* y DISPATCH_METHOD,9 D: @& ?1 V& Q( o$ \
&dp,! p; X: o: @& a. g! X3 n# x
NULL,0 H0 O5 p0 K5 e8 O3 t( q/ u! N5 O
&ei, ( L) P2 W+ I( H% R &uiErr);* Y$ `- R, n( ~- O0 I) U
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SysFreeString(topicStr);) c& Z: E' Z) P
SysFreeString(itemStr);6 h: l& ^, Q s2 o
SysFreeString(valueStr); : `1 Q6 {: B" Y' @: T& j: M : i+ h a! n1 V6 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???0 r G6 o% ^% L1 `" U0 M8 r8 F3 a2 `
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????* z* E9 L+ V, V2 k
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2.这是request的程序3 r3 Q K2 S3 S, H9 [' {4 o& \
// Request a value from Extend1 z# }% l$ y9 w$ X
// 0 a" v8 n2 M$ ]; ]7 E// Initialize the variant that will hold the BSTR. Set the variant's+ x; c: ^3 x5 s1 [: G
// type flag to indicate the fact that this variant holds a BSTR. Place the! R1 V0 P4 ^1 r5 d4 d9 C) _/ W: ~
// BSTR into the variant structure.0 e: A/ X1 K* ~: A6 j5 q, t