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:8 j& _3 P5 q% L6 {1 C
Name = (WCHAR *) L"Poke"; 8 p! j# Q! r: k: I2 W 8 @: j, _5 o, F" s hr = m_pDisp->GetIDsOfNames ( 7 \7 m' L ]1 X' s5 Z IID_NULL, // reserved ( e7 U2 z) D( I4 k0 p! Q3 ~ &Name, // Array of names to get IDs for " z( K: |7 t$ C |4 E7 { 1, // # of names in the array2 ]) `' k4 a$ p
LOCALE_SYSTEM_DEFAULT, // System locale 5 Y2 b5 @+ k: ]: D &pokeID); // Array of IDs to fill on output 2 w4 i( @ g5 h, R. K9 j) o7 [: ?" ? 8 u% V5 q$ _8 \ w( J9 e/ U# v# ` C
if (hr) ) H1 [4 y* m, J0 ^- d% \% l {% Z4 U+ {: f9 |& L* q8 | Y
MessageBox ("Get Poke Unsuccessful");4 r# S7 I( X# V) y0 s. z- c
return;3 G. N) ?. F0 g$ A7 K
}4 u; N/ j$ b+ s, g& y
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/**************************传递数据给extend**************************************/ ( b; `! f& P U( `: c pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ; F7 `( ?4 ?; {/ r: @( `9 Y8 p 7 j# i" O) z, B7 F, H
valueStr = SysAllocString((WCHAR *) L"1232");" Q) C( O' A/ K x# d/ i& ~" z
VariantInit(&pokeVariant[0]); 7 W& r Z1 N# y. f+ D- @1 S- l pokeVariant[0].vt = VT_BSTR;3 |4 s z! @5 y; Y \* B
pokeVariant[0].bstrVal = valueStr; 9 J& |* \# M0 \7 f* N ^/ ^" K/ w; f, f2 M' m, I
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");8 q! ]( G* v# y, B7 x# J6 b6 x+ [
VariantInit(&pokeVariant[1]); , U& b6 K4 }/ m/ i/ D
pokeVariant[1].vt = VT_BSTR;2 U* B" [" L4 c( S: R
pokeVariant[1].bstrVal = itemStr;1 [3 n' K0 L0 D' }) a, W* b
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topicStr = SysAllocString((WCHAR *) L"system"); % [6 f( w6 E8 \( R VariantInit(&pokeVariant[2]); 5 {% P- Y. L/ F/ { H a& l
pokeVariant[2].vt = VT_BSTR;5 @4 F( _% Y a; Y0 K8 H6 E" }' t! I @
pokeVariant[2].bstrVal = topicStr; 7 y- ?* M) H1 \. [. j3 }6 K0 c- N V6 s- |, h) k+ N+ J
// Set the DISPPARAMS structure that holds the variant.% R$ f. `2 n1 b% i
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dp.rgvarg = pokeVariant; + n5 {; Y* Y, K7 | dp.cArgs = 3;6 U/ J6 r8 R6 A9 Y
dp.rgdispidNamedArgs = NULL;1 c% D, `6 y0 i' P4 E5 s
dp.cNamedArgs = 0;+ J1 g8 }, ?# f6 j6 g7 U' V# n
9 b+ a/ D" L- P# N8 h3 T$ v5 n
// Call IDispatch::Invoke()' i, \- Y# G3 W* o9 ?
" v% j. [9 X) H6 N. ^ hr = m_pDisp->Invoke(1 V+ v X* h& w1 P- [" q) U% _
pokeID,6 r* k1 E3 g8 k1 ~5 N6 b+ b
IID_NULL, % A: f/ V9 X( b2 d. F2 o& r LOCALE_SYSTEM_DEFAULT,0 ^9 E) H. V* w7 p
DISPATCH_METHOD, 9 k" s' c9 ~1 X9 y7 a. _ &dp,+ R) W9 M! I5 D6 o( G# {0 k
NULL, + U7 @+ W. |* H2 l &ei,9 c0 u0 I+ q e0 d) w( A
&uiErr); . P4 _. ?9 M% P0 D: S$ ^5 Q* `) k6 `7 W: R
SysFreeString(topicStr);. {$ P7 O# w8 k1 d* N
SysFreeString(itemStr);# h& Y6 P) C. ^ J. K
SysFreeString(valueStr);8 o+ ~- G9 n' b9 ], O- c2 t( V; ?: j
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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???/ x, N$ W ], T/ r. u5 U
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???? / o1 U; h P% k3 ?& I0 D 3 D0 [& b4 _' [5 F9 p P ' j8 Z+ P$ C: K! f) R( G2.这是request的程序- S: v) l. N: B2 Z$ \4 H( k
// Request a value from Extend " I8 F" k& }* o& f//' u1 O' e5 B7 ?) ^/ [; V
// Initialize the variant that will hold the BSTR. Set the variant's - ^4 t* ^" j, i0 S6 K// type flag to indicate the fact that this variant holds a BSTR. Place the: x3 U8 y* l7 B7 V
// BSTR into the variant structure.0 ^/ K' r. N) C9 b1 q+ `
+ }- ?5 i7 `8 w3 S8 h: j1 j" u requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);* e7 p& Q. I+ b$ e. r3 c
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");1 T, D. s; a5 t: S, U
VariantInit(&requestVariant[0]); ! N; e2 d5 a# `2 l/ Y& E
requestVariant[0].vt = VT_BSTR; 5 s, x) M$ t! {% l8 V Z' V requestVariant[0].bstrVal = itemStr; 9 o+ W$ U- S; N M# K U9 {& _7 m2 z( j
topicStr = SysAllocString((WCHAR *) L"system");: ?- G: {6 n/ r/ N# ?( I9 A
VariantInit(&requestVariant[1]); ) l7 W N# j9 i d" ?9 b
requestVariant[1].vt = VT_BSTR;( K' ]4 I( G. b! b3 ]. c0 D: s
requestVariant[1].bstrVal = topicStr;/ u1 O: \; Y% a% q T7 n
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// Set the DISPPARAMS structure that holds the variant. ! m6 [: e0 u- z0 L* h0 c& z' Z+ ?- d
dp2.rgvarg = requestVariant;( F7 w% [1 u) q2 E/ i" b! B& C
dp2.cArgs = 2; ! A* `$ F' a7 I+ b dp2.rgdispidNamedArgs = NULL; 8 @ T4 c9 f- b6 S7 v3 E* ~. V dp2.cNamedArgs = 0; . v5 L6 g: f1 l( P( C$ ^8 @4 i/ T
var.vt = VT_EMPTY; * D8 ?7 `# E: k' P9 r3 p [+ u2 {, h7 Q* ~
// Call IDispatch::Invoke()0 x4 C$ K$ f+ e* S u2 s
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hr = m_pDisp->Invoke( g/ m8 A$ X1 h! y- J requestID, , B: t6 G' p4 {1 v5 C IID_NULL,( p3 v* _4 Z1 V. z& h
LOCALE_SYSTEM_DEFAULT,0 r: T" ]0 i- r
DISPATCH_METHOD, ( x+ O* p9 ^6 k &dp2,7 }. f8 q9 K6 [4 \& `
&var,% A" x. p* P0 z) }
&ei, ( a1 a0 e4 G4 v &uiErr);0 ~* c' o! t# }