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: ! Y) @/ k7 L' w5 ]Name = (WCHAR *) L"Poke";* k* q# E4 @( ]" q* w. G
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hr = m_pDisp->GetIDsOfNames ( 6 c* |5 q1 ~* `: G5 p$ h IID_NULL, // reserved % f# I% G6 W N8 N. i &Name, // Array of names to get IDs for 8 C* n6 L7 {" d; e 1, // # of names in the array8 y/ d3 z) f) g. q: ?
LOCALE_SYSTEM_DEFAULT, // System locale) @- X- Q2 E1 Y- w
&pokeID); // Array of IDs to fill on output m! I9 g+ P' g7 m& i3 l+ n5 R) E
. }/ d8 [' E! c* \) A if (hr) ( H7 M+ q4 O( U1 N: Z5 u { 4 K# o$ y2 ]4 s4 k5 G MessageBox ("Get Poke Unsuccessful"); ) q H8 }% f( q# u* {4 r return; 6 w+ Z' W R" }9 k. E; n5 F* l- v5 y }. y$ _9 p& P" [5 G
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/**************************传递数据给extend**************************************/ 2 I- j/ q% \) i pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);* w/ @. p8 |; C+ e
# Z b# @, d+ v9 O3 p valueStr = SysAllocString((WCHAR *) L"1232");6 F8 o' Y% ~$ m2 Z+ j2 Q8 O
VariantInit(&pokeVariant[0]); ! K6 ]2 E3 f# H pokeVariant[0].vt = VT_BSTR; O7 b6 [0 e+ _4 z. v
pokeVariant[0].bstrVal = valueStr;5 H4 F' b: T6 x% Z4 o
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");( F3 p- d$ r, k' _
VariantInit(&pokeVariant[1]); 0 D% b5 v) x* v2 |# ?
pokeVariant[1].vt = VT_BSTR; 3 |1 a1 ^; ]+ t; y" J0 h$ v pokeVariant[1].bstrVal = itemStr; : L. w& h: T/ E4 s# X" w( s* d- r- [1 p1 ^5 n; z }& x
topicStr = SysAllocString((WCHAR *) L"system");9 q+ N$ X3 C( t7 j9 X+ h
VariantInit(&pokeVariant[2]); ! p# l2 p0 `' P* F, r; l+ ~
pokeVariant[2].vt = VT_BSTR; 9 \: ^* Y- j9 N0 S: z# D pokeVariant[2].bstrVal = topicStr; 4 K; J( S! F k; |) W7 s0 s- U; j" L5 ?+ } ^/ B+ H5 W
// Set the DISPPARAMS structure that holds the variant. $ w, ^: Y8 q* G4 b 9 t& W6 Z% t. A# n7 @: c/ F dp.rgvarg = pokeVariant;% }6 H. s+ q" x$ [/ b3 A
dp.cArgs = 3;$ x" s! m* O9 y/ L5 r! w
dp.rgdispidNamedArgs = NULL;6 J0 R/ W0 T! m
dp.cNamedArgs = 0;/ z$ U* ?2 c1 }; I3 {- C2 B& |
+ Y, n0 `. F4 H. N4 G/ N" u' O// Call IDispatch::Invoke() ' M) J: h9 n3 |6 _ 9 p9 u$ B3 }4 D$ U6 g hr = m_pDisp->Invoke( 1 ~ ^ i5 x7 @! u M; x S pokeID,2 t1 ?! A* |" K0 ]$ I! Y8 h' g* u
IID_NULL, 5 Y) f! q: {, z; Z3 c' s' N9 k LOCALE_SYSTEM_DEFAULT,7 n+ p# ?( p& E: g4 j
DISPATCH_METHOD, ( P6 m6 P6 S; U7 W1 ?, m% b7 ? &dp,% h8 Q3 c7 m( G7 X
NULL,4 [, @9 J. @; M/ W
&ei,- u) i4 [( \! ^: E9 D0 Y
&uiErr);, A7 W1 D. s2 {6 m
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SysFreeString(topicStr);! _4 \, V) d7 \" `: ^
SysFreeString(itemStr); : B# O5 z& h3 p% I SysFreeString(valueStr); . v& ?$ a& j' C% W8 o! ~5 ? 8 K6 l' O3 {9 p( Z! l l V. w8 f8 e# \) 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???1 y& O* h3 y7 ?1 |* J
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 b; x! W4 z9 p* @* S
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2.这是request的程序 ; m1 y0 _' B# R/ L# L$ J// Request a value from Extend ( w# e; g! X2 K7 \: H5 G% I//2 O" W, I7 \1 d6 r
// Initialize the variant that will hold the BSTR. Set the variant's . l: B8 Y% r* t) f0 _" a5 \& i// type flag to indicate the fact that this variant holds a BSTR. Place the 2 q4 s/ K" J/ w6 i* k) d// BSTR into the variant structure.9 S: j; R8 ~7 U
- r4 e8 X, ?% W3 i6 F: [4 s* ^" W$ ` requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);% k& W1 V/ j1 P) W
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 9 Y* I# E7 E: `/ g" D VariantInit(&requestVariant[0]); ( ^) F5 J& P: |% ^! j& q) M1 G* w
requestVariant[0].vt = VT_BSTR; , d; x5 G y: F+ ~9 l% \- A requestVariant[0].bstrVal = itemStr; ; _! }# f G r 7 m, }( i& \ N' I. H5 S topicStr = SysAllocString((WCHAR *) L"system");8 p, m, F2 u. j- a! U1 o( ^7 t- m
VariantInit(&requestVariant[1]); 4 ]0 c; ?+ o4 Y9 m2 t
requestVariant[1].vt = VT_BSTR;; e0 X5 Q7 B2 z1 S/ B2 c5 q5 b
requestVariant[1].bstrVal = topicStr; ! x; u6 v; w! }6 b/ H0 o% S# s( K8 l9 d0 K M; e
// Set the DISPPARAMS structure that holds the variant.. G# K' {1 U) F$ ]$ d& i" z/ o
. K4 X0 e ]) `( h' j: L) ? dp2.rgvarg = requestVariant;/ u$ b' n' z( C2 f# m, ^& l3 C1 ^
dp2.cArgs = 2; ; b- s H! C/ ` dp2.rgdispidNamedArgs = NULL;+ d1 t5 |; }& H! D2 P
dp2.cNamedArgs = 0;- U& z# M1 |. t/ Q/ c
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var.vt = VT_EMPTY; ! t; D7 S4 e3 W % X2 p+ R, g% j, p/ e7 P4 p// Call IDispatch::Invoke(): e2 T) y$ I. ^! p