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: 2 R! X% {8 b* u; fName = (WCHAR *) L"Poke"; 1 X/ P9 `$ q8 k! Z 4 U+ L2 p/ L* I. g* ^7 X hr = m_pDisp->GetIDsOfNames ( ! H/ U* s- U& ~ IID_NULL, // reserved , ?3 J5 i1 t9 k4 X1 i+ o$ j! u &Name, // Array of names to get IDs for ( @9 u5 i3 o; u S' C; J: z 1, // # of names in the array m5 ?6 k5 K$ H$ |- `) o0 ~4 r5 K LOCALE_SYSTEM_DEFAULT, // System locale # C# n+ t1 {4 Q k, M6 R; e, p &pokeID); // Array of IDs to fill on output7 K5 S$ O% u* W, I! x4 [# x
- z- p; S' y, w Q9 a: J if (hr) 1 ]% _8 V+ y" T3 f4 |8 ], x { 4 n4 g% b3 k8 m MessageBox ("Get Poke Unsuccessful");/ ]# A/ ?' |+ J; g( `
return; 8 x! A; O0 a; U4 r } ! q/ q4 z# a0 N b& X7 }9 d9 _ ( m1 E4 c# J4 S0 Q) c; I* `/**************************传递数据给extend**************************************/- u2 x' A% s, H6 M2 Z5 ?7 I
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);2 _8 z! R |8 w a3 o
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valueStr = SysAllocString((WCHAR *) L"1232"); 4 n3 w4 o3 T) ~# T! h6 D2 m VariantInit(&pokeVariant[0]); : ]' r7 [& e% z; R
pokeVariant[0].vt = VT_BSTR; ( G% y" a+ H9 V0 m; A/ E& Q7 c, a; y pokeVariant[0].bstrVal = valueStr;2 h6 n( s) u9 u' }
/ X! N' I' c4 U3 m itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); $ p) \ l/ V3 ^( u VariantInit(&pokeVariant[1]); 5 g1 F. S' C' u+ y pokeVariant[1].vt = VT_BSTR; : c7 ~/ u/ j2 T! m9 {# ?9 u) d pokeVariant[1].bstrVal = itemStr; , q% x- i6 Z; K# @0 `) s 0 h$ T( B( M/ U) _ K topicStr = SysAllocString((WCHAR *) L"system"); ]8 W1 O) ~1 P VariantInit(&pokeVariant[2]); 8 C3 J5 ^5 T) U# { L) r
pokeVariant[2].vt = VT_BSTR; 6 k5 P. P- G9 s0 o& v; M; f pokeVariant[2].bstrVal = topicStr;9 ]4 R' C, L4 S# y0 M, ?
. f* w8 A$ f2 |7 \; F" Q// Set the DISPPARAMS structure that holds the variant., L6 q# T3 |, b2 [3 {8 V, f$ E% W. O! H$ u
' m4 t/ e3 `- m# ^ dp.rgvarg = pokeVariant; 8 X* a+ j4 M8 N( W5 a5 ^ dp.cArgs = 3;+ m4 x3 u8 `+ `( x+ m& v
dp.rgdispidNamedArgs = NULL;, Q/ [9 H& a& p4 F0 G% e
dp.cNamedArgs = 0; 0 p5 W. a V$ n; [8 Z- G/ b* C, w' q6 \% ~1 c+ e0 c! P
// Call IDispatch::Invoke() 2 Q$ g7 V6 x M2 y: S2 c' A7 P: ^8 D9 h4 F
hr = m_pDisp->Invoke( 0 F! e- G3 J+ y/ V' v3 Y pokeID,) o" j$ U. p. e: l" X
IID_NULL, 8 N% m8 \" U% s6 V" ~ LOCALE_SYSTEM_DEFAULT, * n- _ {% ~2 S DISPATCH_METHOD,/ U4 t8 n2 z/ V% b( V( i1 L
&dp, ( S: a6 Y5 m- g+ v NULL, ) z. j3 w7 M1 ]7 b' R% K &ei,0 \7 K; {% J6 B+ U% D( {
&uiErr);1 {/ J: j" z$ @8 V$ C3 B
! ^* Q' n4 ^ i7 k SysFreeString(topicStr);3 E2 n" \/ L) [) d
SysFreeString(itemStr);7 d7 s) P' h! V2 U1 q6 B L
SysFreeString(valueStr); & j( y0 o' j% ]8 U) o s: ?& Y8 K! z! P( T: q% [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???+ T( l3 o9 ^% [* ? ^1 U5 h- R5 Y2 c5 c
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???? ! B& L, U2 ~$ L/ g) t: z4 v H! d$ s6 H$ O7 z7 Z
; j- I5 S$ P+ f5 [1 ^5 F2.这是request的程序8 d; l& y/ k9 L( v% ^ t
// Request a value from Extend + p4 Z4 w. l' v// ; z! _$ o1 P& U* ?: V% B// Initialize the variant that will hold the BSTR. Set the variant's # x# e6 F) C0 R O; w) F( t// type flag to indicate the fact that this variant holds a BSTR. Place the 0 l& _" P; b: N2 L4 p0 o9 @// BSTR into the variant structure.( Q: W9 S, X# F7 y
( g0 G7 ~* Z0 K' H, b requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 5 Y0 b: `5 [ b1 u( E/ m + l( |3 J. A, X) P# l: J itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 0 W2 J# N2 Y6 P" Y9 x) J VariantInit(&requestVariant[0]); ) |5 {; J2 N! y- n( E
requestVariant[0].vt = VT_BSTR; ) j6 n' D% j; A8 @ requestVariant[0].bstrVal = itemStr; " a( J- e6 u* n; I7 {1 b" T9 ~ ( q/ u* B7 A$ }) |& \ topicStr = SysAllocString((WCHAR *) L"system"); 4 ~$ D' m) M& B VariantInit(&requestVariant[1]); 7 z+ Q# a$ e) ^' D. K6 Y
requestVariant[1].vt = VT_BSTR;$ ?) H7 Z/ i% F2 u5 E, f
requestVariant[1].bstrVal = topicStr; 6 }! G2 Q( e+ w- {& c- ~4 C4 s& A* C8 c% v% ^
// Set the DISPPARAMS structure that holds the variant.* c% _7 S- A6 v m" R
* I9 X/ `* A# H4 Z dp2.rgvarg = requestVariant;8 {& X2 F) ?1 l9 u: S& j
dp2.cArgs = 2; ; e: v1 G* v+ W x; l dp2.rgdispidNamedArgs = NULL; 7 F9 }; O, | u2 p2 e( O7 g dp2.cNamedArgs = 0;8 b* c+ B$ t: Q3 m& H+ j5 N; t
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var.vt = VT_EMPTY;8 x, I9 Q' {' t% n5 w
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// Call IDispatch::Invoke()/ @2 y6 w2 x# ^- F1 D$ D
0 D3 V* M7 I, l% @1 S hr = m_pDisp->Invoke( % b" ]# @) P8 @. S3 F5 ^! f. g: I requestID, / S8 y: M$ h! H- t IID_NULL,% H' S+ \6 W( G
LOCALE_SYSTEM_DEFAULT,8 p8 G7 O: X! j6 h, y M% l
DISPATCH_METHOD,3 O( L) h5 j- y. P$ d
&dp2, $ O1 c, `) f u' E2 u &var, 5 l7 q0 {* Y0 z' ~% E) j+ } &ei, 4 s" `$ z9 J0 Y' l9 B &uiErr);" ^1 U$ b6 l/ w) n; e
6 d' o% o1 o6 g W SysFreeString(topicStr);" e$ ?9 z; Y ~: Z% m
SysFreeString(itemStr); ' B& f7 V3 p( [' g请问该程序是获得extend里面的哪个值?( O/ X0 c- _5 c
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????