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 l- u4 h8 r! H. X. i, d* ^/ d: wName = (WCHAR *) L"Poke"; - g8 L) `8 d; _6 I % C: O, a$ [) s: y, L+ E* C
hr = m_pDisp->GetIDsOfNames ( 3 ^: a9 s$ J0 i$ u( f' F2 T; ` IID_NULL, // reserved , S; T1 J$ }& w# m &Name, // Array of names to get IDs for- l) x4 k* f# d4 y/ h! A8 V7 e
1, // # of names in the array$ @" I; M! ?$ e: m2 X! G; `
LOCALE_SYSTEM_DEFAULT, // System locale 6 k8 Z- ~0 h$ |6 } &pokeID); // Array of IDs to fill on output& q! l; J4 U, z# |4 _" W
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if (hr) ! O9 ?) Z" O1 {0 A/ i$ T { . _0 y p1 Z8 M3 y MessageBox ("Get Poke Unsuccessful"); V! ~+ H! d8 m- \0 `3 f return; : A3 Y+ ~7 C7 ]: O! f' z } $ [% { p% {' B6 H ' A' ^& o: v8 f7 r$ r/**************************传递数据给extend**************************************/ ) C3 |) W6 r1 y% C8 W2 I5 L& L pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); / V3 K: L, s6 l8 d. I. ~5 }0 J! u ; Q2 ~8 q5 H1 W8 p! T valueStr = SysAllocString((WCHAR *) L"1232"); 2 N* D7 k* O7 E7 J( w& x, N VariantInit(&pokeVariant[0]); 0 _0 _3 F& J/ |0 Q
pokeVariant[0].vt = VT_BSTR; + H. Z* S4 a6 B- G& ` pokeVariant[0].bstrVal = valueStr;" c. D U8 J0 f9 X) X4 O
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");$ _7 w2 W J! {4 ]$ r4 u9 {; q
VariantInit(&pokeVariant[1]); / y1 t" i: {( T' T! [5 R; ]% o3 i( h
pokeVariant[1].vt = VT_BSTR; . p( |' v! u1 P0 o n7 d4 Y pokeVariant[1].bstrVal = itemStr; + @# V! P2 @1 W# F3 C/ ^+ l + `. \: R& Y# R8 k8 n topicStr = SysAllocString((WCHAR *) L"system"); 2 d, _6 u; R5 C. }3 b; B% ]5 b VariantInit(&pokeVariant[2]); 9 _2 v1 |1 P, w9 P" f$ l5 O1 B pokeVariant[2].vt = VT_BSTR; , M5 l2 `* v+ M6 o8 g3 K+ M pokeVariant[2].bstrVal = topicStr;4 G5 _% h$ |. T& J
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// Set the DISPPARAMS structure that holds the variant. 1 J3 H3 \, B9 C- z* z8 z0 I # Z; l0 z' k+ I! F; x! E dp.rgvarg = pokeVariant; % C9 T/ E2 }! Y' _ dp.cArgs = 3;9 f! N# O4 v$ ^( A: }
dp.rgdispidNamedArgs = NULL;8 n" k$ B+ ?3 o
dp.cNamedArgs = 0;8 r3 o5 `* N2 V8 z( y9 Q; {4 _
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// Call IDispatch::Invoke()4 Q" t( n& ]4 |& t, V
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hr = m_pDisp->Invoke( ( F/ [# A ^$ E pokeID,1 U4 A, b# I% \5 |
IID_NULL, 5 R/ W1 G0 C& d6 Q7 c/ w. d LOCALE_SYSTEM_DEFAULT,* \9 C6 r" T5 c# E6 ~- a, z
DISPATCH_METHOD, . G* d& o% H! | &dp,' y1 Y* ? ~. ]: v
NULL, 2 ~: g- b" }3 {, i &ei, ; y, T9 b+ o; {" Q: ^0 S &uiErr);& L5 k- l8 S5 y, D K( g
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SysFreeString(topicStr);: J7 j0 Y% S8 z' P* j1 T
SysFreeString(itemStr); 6 v, a* I% U2 Z3 j% }* v SysFreeString(valueStr); 0 |8 _" f* C0 e9 S9 d/ N; k3 s! v9 D 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???; E: a' q) L3 X7 s6 P
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????9 m1 y ~7 W$ Q
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8 ]* f& ]; ?. H9 d2.这是request的程序 . @( d S2 \5 I) o) g# i9 z// Request a value from Extend' J. }% `) j" f8 W* [! j- O
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// Initialize the variant that will hold the BSTR. Set the variant's ' t/ ~6 ] ?' J8 {5 M* D// type flag to indicate the fact that this variant holds a BSTR. Place the% y* _- H( r. a r$ t
// BSTR into the variant structure./ q! ?( O6 v& ]3 ?3 o
* F1 ^4 j2 A* C; h& s requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);+ z9 g$ }! i2 c! D+ t+ @3 G
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ; z" s! \+ O [6 c4 w2 b; k VariantInit(&requestVariant[0]); 5 X$ [: \& `% j% W: e1 }
requestVariant[0].vt = VT_BSTR; 7 Y9 N$ d4 E" d/ ? requestVariant[0].bstrVal = itemStr;3 N' }% K: G- ?1 M" f/ B
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topicStr = SysAllocString((WCHAR *) L"system");6 o: p- }7 S n8 S8 ]. J: `/ @
VariantInit(&requestVariant[1]); + w6 ^6 _" t( G8 t7 N requestVariant[1].vt = VT_BSTR; , f% _! h3 P8 n, H- s+ m requestVariant[1].bstrVal = topicStr;+ r8 X# J; U, c3 g
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// Set the DISPPARAMS structure that holds the variant.7 `* a; \' N0 q% z4 S' I
6 P/ R2 z$ y" x T7 h! k* E dp2.rgvarg = requestVariant;4 w ~) u* f# J8 L) P
dp2.cArgs = 2; 8 B1 B2 j# h" J. O2 _ dp2.rgdispidNamedArgs = NULL; , @6 H. G9 u+ l dp2.cNamedArgs = 0; " k- v3 L$ D5 Q7 Z, F2 m6 N. ~0 V2 N 6 t. G! z: `( J# ^7 r! ?* ` var.vt = VT_EMPTY;+ c9 L- [+ }$ j
' P4 r, B* i, B: \2 q, }; ~// Call IDispatch::Invoke()8 @7 C+ W5 h. G; z6 U
1 a9 E+ r, a; u/ b8 l8 n hr = m_pDisp->Invoke( 6 M$ P' x' M# `& M9 D requestID,. o( z) @ j2 @ ]3 I
IID_NULL, / x- f& T: A2 f* @/ ] LOCALE_SYSTEM_DEFAULT,9 D; Q; I* U' a3 ?# ~ N) e* R
DISPATCH_METHOD,+ E \9 Y6 M8 A/ j
&dp2, . ^/ P# v$ }! a& t4 z &var, 1 `7 r* _4 F* c. A &ei, X) L, F7 g( `! E& z# _% B &uiErr);# {, ^4 S6 g& a9 x g# L$ M# z* }
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SysFreeString(topicStr); $ r( H! ~# q( C) ?( p: B/ X0 I SysFreeString(itemStr); 8 O' ~, F* ?! K, j g请问该程序是获得extend里面的哪个值?* D; h/ |9 d( y& K/ m& t
如果我希望获得extend程序里面的某个变量的数值,那个c++程序应该如何实现????