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:+ K5 t8 P/ D, C
Name = (WCHAR *) L"Poke";$ V0 _ c9 d& k7 \' h3 p
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hr = m_pDisp->GetIDsOfNames (! C* Y, l( c4 X" }
IID_NULL, // reserved' @4 j% {% m+ u/ w/ A z
&Name, // Array of names to get IDs for7 V& S- _4 q" m) A0 `! F: |
1, // # of names in the array; m A& k* S+ b" X( _2 q# z
LOCALE_SYSTEM_DEFAULT, // System locale3 _' D. Q) ]7 p4 K
&pokeID); // Array of IDs to fill on output 2 n6 ~ g: u ]9 i4 s* c! a9 U5 { 3 |( c+ X J. _6 \" L
if (hr)% w' D# h2 B$ }$ x0 C4 f4 e
{ " c, m* B. x% Y MessageBox ("Get Poke Unsuccessful");1 `& S9 D( D: N2 Y
return;# t- y5 A0 U+ P9 r' _; m% g0 x0 D
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7 f% N1 ^" T- O8 |: f/**************************传递数据给extend**************************************/. ~3 m+ J/ b2 k" P
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);" ~+ W- E* h' f ]4 v
! [, p8 x8 |' C) G% B2 L) \; Z valueStr = SysAllocString((WCHAR *) L"1232"); 5 A6 c( w0 n3 [, G. h; ^$ z, B VariantInit(&pokeVariant[0]); - c6 b* h2 }% s* b3 D4 \" f# H7 {
pokeVariant[0].vt = VT_BSTR; 9 k9 L7 C; a* \' t pokeVariant[0].bstrVal = valueStr; n4 c# D" R" o! E6 g: H
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");) J2 O; R# F/ }& C
VariantInit(&pokeVariant[1]); & A8 p3 N$ |0 v& T8 P z pokeVariant[1].vt = VT_BSTR;+ W1 P2 ]7 h# _
pokeVariant[1].bstrVal = itemStr;, C4 s7 x' o9 B! R+ B* w
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topicStr = SysAllocString((WCHAR *) L"system"); t& @4 D8 W6 b, l- l. P* v- L
VariantInit(&pokeVariant[2]); R6 d) |# L0 X6 ?$ T
pokeVariant[2].vt = VT_BSTR; 1 s% m; {+ R5 ]/ X' U pokeVariant[2].bstrVal = topicStr; + R ^" h* l) v6 I0 g8 ?( p. n) F. i, [/ r q A3 t3 G' T: m+ q
// Set the DISPPARAMS structure that holds the variant.$ {& [4 i* R# P8 n) U9 \" f8 f
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dp.rgvarg = pokeVariant;" ^6 W* @& k0 G! }3 s+ _
dp.cArgs = 3;4 A" O/ d0 Y0 ^9 D! N& R
dp.rgdispidNamedArgs = NULL; * |8 x+ d0 ~# e" c dp.cNamedArgs = 0; ) ~6 R3 K* o' C. W) q+ h" E3 G- _% D1 G$ d
// Call IDispatch::Invoke() & }9 O4 _$ N4 K) i4 U 8 }+ `4 x7 J$ U6 M; P) L hr = m_pDisp->Invoke( 2 @- D$ }( i* F8 ~, x4 N pokeID, 7 A7 |( K8 Z2 u( ?& v0 j IID_NULL, ; a6 j' k! J2 C6 o LOCALE_SYSTEM_DEFAULT, & G0 S5 K! I8 p: q+ o- y DISPATCH_METHOD, 5 S8 V( B R# d% O0 h &dp,* S- k. x1 @9 A) ~! Y( C2 ~& Y
NULL, 5 L/ U& _% W* z3 _" M) O0 s" d5 ?! g &ei, # i0 @) o5 y# h3 N8 {8 J+ o &uiErr); & G% a6 J& i) m2 T* | ' M/ ^) S- H( n. K9 {, T SysFreeString(topicStr); - Z a8 ^' O5 L" h- D SysFreeString(itemStr); 5 n2 Y Q+ ?- j$ w4 A5 p0 s SysFreeString(valueStr);8 z# r4 m, v- a
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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???7 L1 r+ U8 ^) y% V9 m% v
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????+ U* k; _6 ?, m3 s3 _
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3 N. Q) p4 D7 F# M0 f/ W- s2.这是request的程序 . {8 ^! M, _& |" K5 t% }4 ^// Request a value from Extend % q E* G& r/ [" r//4 C8 G$ c j @3 x" z, k4 V1 e( O
// Initialize the variant that will hold the BSTR. Set the variant's& y0 _8 o( k0 g% l# s$ M6 Y8 p+ v9 ?
// type flag to indicate the fact that this variant holds a BSTR. Place the + S6 D; J2 w7 V& h// BSTR into the variant structure. 0 w' F* H% K, u( j : Q* {; \" U6 L requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 0 L8 V0 P+ a( R& f; T+ w * V b. r% _+ t% G itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");# V4 O* w! }* R. ]& M
VariantInit(&requestVariant[0]); ' M1 O/ b X6 G" b: y+ W9 S requestVariant[0].vt = VT_BSTR; 9 z. T" ?4 W- L requestVariant[0].bstrVal = itemStr;+ D$ r- F$ ~) U4 h. q3 B2 J6 ]
/ `% m& E- y2 z% b' Q4 a9 u topicStr = SysAllocString((WCHAR *) L"system");0 `1 j( a8 k, ?
VariantInit(&requestVariant[1]); * U$ d* w5 O" L4 F requestVariant[1].vt = VT_BSTR;2 I; p, I H6 v" r% \5 p
requestVariant[1].bstrVal = topicStr; 1 j; b/ F$ l& R8 `3 e7 X6 w$ E9 D" j, d; n! l% Q- e: m
// Set the DISPPARAMS structure that holds the variant. , Z1 \6 q( {6 r8 r: z8 J5 _+ W / o- Z) B1 F R+ h9 I6 U" {( T dp2.rgvarg = requestVariant;3 w8 L2 Q( d8 I& F
dp2.cArgs = 2; 0 i$ w. S( U1 i$ w) a% D dp2.rgdispidNamedArgs = NULL; # \/ C8 h+ D& ~; b6 h* r5 [ dp2.cNamedArgs = 0;; C* Y# Y4 a: V+ u% R
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var.vt = VT_EMPTY;! K+ l4 U& b7 z! ^* h- p. k
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// Call IDispatch::Invoke(). p, _( R" k" r8 [, g0 h" i
, _$ w6 j0 A* d3 R8 d& o hr = m_pDisp->Invoke(8 {7 n3 g# r, z
requestID,' m# S$ A9 Q# w. H( M
IID_NULL, ' A* B* y% {- z' ~- r+ ? LOCALE_SYSTEM_DEFAULT,. t, u& h0 k. [# \ j$ z
DISPATCH_METHOD, ; q* g5 n( P+ j; C, N &dp2,% q6 [ L8 P6 g' B; n
&var,, ]+ k8 X& M; ]# p; O5 o
&ei, $ Q. ^" Q* s* C0 [ &uiErr);( ]( X' v1 L$ G; C* e+ H. J+ J