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 V, K6 ^! r5 i! _( tName = (WCHAR *) L"Poke"; o. O/ w' V; A: c
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hr = m_pDisp->GetIDsOfNames (6 j- ]3 [) M" a E* ~
IID_NULL, // reserved2 ~- H$ P. Y0 f& @
&Name, // Array of names to get IDs for% Q# i9 k r! R/ q+ U" N
1, // # of names in the array1 z- y+ ~/ k- E0 k1 J) Z0 P- N
LOCALE_SYSTEM_DEFAULT, // System locale' ]9 K( ^+ G" J& F. V$ M' e9 u. {
&pokeID); // Array of IDs to fill on output, u9 R8 [ _( v) b# c
# d0 B# f2 L4 S& R7 K- R if (hr) k" n# `7 u4 H+ S$ w# ]7 r) {* y3 q {! d% T, u3 Z h& C: R2 t5 `4 X! W
MessageBox ("Get Poke Unsuccessful");) _& j) ~4 B- t5 m
return; ?, [: t# Y, h$ r* S
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8 Z/ K1 ]5 T/ [) ~% a/**************************传递数据给extend**************************************/+ j4 I' R2 ^- x4 k% P
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);) o# n1 c! _! ]& I
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valueStr = SysAllocString((WCHAR *) L"1232"); : M9 J/ H" G6 ~* a: F VariantInit(&pokeVariant[0]); * A; \( g: V- I- ^/ L) F1 o, l pokeVariant[0].vt = VT_BSTR; " I$ A) U$ h& J% W+ h3 J) ~( h pokeVariant[0].bstrVal = valueStr;, q& e5 Q$ Z6 ?: a
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");) B: ?1 \/ e; ]0 m2 M
VariantInit(&pokeVariant[1]); : g+ p( |# j! e' N, u
pokeVariant[1].vt = VT_BSTR; 3 a! T% @( F' z9 K( D6 g pokeVariant[1].bstrVal = itemStr; 3 E/ T/ x- b5 f# N7 x- E3 B! g1 q
topicStr = SysAllocString((WCHAR *) L"system");% V) G3 F: }* @: T( K4 s
VariantInit(&pokeVariant[2]); ' {% t+ n- @9 w pokeVariant[2].vt = VT_BSTR;2 ~+ v* k, _- x1 W' T+ d
pokeVariant[2].bstrVal = topicStr; ) d/ b8 p" d! k l& I- X2 @- y8 V2 J! w4 m" @; o
// Set the DISPPARAMS structure that holds the variant. 7 g& ^# R; q. E; G) Y; ]- ]; y4 ~9 A6 A2 e% o. H" V8 ?7 \8 a; J
dp.rgvarg = pokeVariant; 1 d- k9 I1 N6 y6 i; J8 I dp.cArgs = 3;* b/ l1 i# K# [+ \+ |
dp.rgdispidNamedArgs = NULL;. e" P0 b: v1 B) J% g
dp.cNamedArgs = 0;0 Z: [8 F7 z! f. p9 v9 N" {
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// Call IDispatch::Invoke() Y* p3 A$ Y( B; x+ y) n9 P1 y I
q1 c' o8 a2 ? hr = m_pDisp->Invoke( ; ]' {& z6 F7 G' T% X pokeID,6 n- z/ z; H4 l# Q
IID_NULL,! s" v1 Z# I6 @1 p/ i1 a6 ^" n. m" h. X
LOCALE_SYSTEM_DEFAULT, & R& V5 \% n x, v1 L- z DISPATCH_METHOD,/ x" C8 m8 b! g; }5 h- U5 s/ `" ]& u8 y
&dp, ' a2 V$ X6 D- g# r$ p NULL,$ {0 k; a v v' C1 g# P" t
&ei, 6 K) `% ^ t. W [4 v8 h &uiErr); 5 h' R7 \) M, p8 Q1 Y, Y( _# H& D/ ?. `9 z0 d1 o6 O
SysFreeString(topicStr);# C7 @3 [' G0 S _/ q8 {$ q
SysFreeString(itemStr);8 n0 V9 k9 G6 q+ y( C' t2 u+ q
SysFreeString(valueStr); 9 j% }5 L) G7 I$ w * q, t0 ?3 r8 u A- [1 c! ?) 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???. o, r, A, \; F4 j2 g7 h) h& 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????+ z6 a X/ q! H4 M0 K
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. \9 l, x" v" ]9 v6 m' x3 i2.这是request的程序 $ z/ p _9 D( g& M% i: Z// Request a value from Extend ! C9 a/ k1 t' y//. t+ h5 c1 A& D4 W! N
// Initialize the variant that will hold the BSTR. Set the variant's2 _* |# m( `' a4 u6 e( s- w% v
// type flag to indicate the fact that this variant holds a BSTR. Place the+ N: `! m: D6 V! ^3 \
// BSTR into the variant structure. 6 y* O5 Y2 ~% |( Z: H0 H5 a2 C( N; { , o: u* E9 _ n- B \$ E requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);: j; p( W; [! h, l. f) C
" q. z7 ~$ D8 g3 b4 ` itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); " J8 b7 r0 i- Y/ i' z4 t; q; h VariantInit(&requestVariant[0]); # \7 o7 Q, s- X' `! i, O5 r4 w requestVariant[0].vt = VT_BSTR; 1 P. q* [/ D! \( s" q% U requestVariant[0].bstrVal = itemStr; & v' |( t/ A, c 5 Y: m+ D3 K( V& I5 N! L6 } topicStr = SysAllocString((WCHAR *) L"system"); 2 ^# P" A# V! B: o( W( x5 | VariantInit(&requestVariant[1]); 3 H7 C8 z+ ^$ L4 M* G9 f requestVariant[1].vt = VT_BSTR;" m/ P, ?+ v1 r" j/ O) v2 g
requestVariant[1].bstrVal = topicStr; $ L& T, v& m" i h6 g% U # \& H, u7 a! s. F5 ~/ ^0 |; D// Set the DISPPARAMS structure that holds the variant. 9 T& ?1 H5 c/ c . ?0 U7 D6 X- i u- C dp2.rgvarg = requestVariant;9 X: Z: \# I# U* ]% `
dp2.cArgs = 2;8 x# d' Q# C E8 _" G
dp2.rgdispidNamedArgs = NULL;7 v k9 i( P/ O
dp2.cNamedArgs = 0; ! a4 O. p v; M J8 w " ?+ M" P i3 }- J' R- X var.vt = VT_EMPTY;8 C, h4 o( @# H- s8 Y. K. G
6 l6 S- Z2 r% g" Q+ y* R# e// Call IDispatch::Invoke()* Z# p+ N( d( g, F( D
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hr = m_pDisp->Invoke(/ s+ q; T# U% L( G: o
requestID, : i. R- ?: E" T6 u: ]& |0 ` IID_NULL, 8 e5 n9 a# f' G8 T. r; Q LOCALE_SYSTEM_DEFAULT,7 ^- O2 c. m' o, r6 {
DISPATCH_METHOD, ; _, ?5 E( W1 h R; j &dp2,- T( W, y. b2 x
&var, + M2 o5 U; i8 x& t1 h &ei, - s" ]. |# L: a$ Z3 q4 Q &uiErr); ! \. ?( _- V, F0 ^1 {0 I1 e# u ^7 d* E( f0 L9 x. g
SysFreeString(topicStr); " @- H) Y+ D! t6 b SysFreeString(itemStr); / W9 c* h6 h6 J+ E( P! v请问该程序是获得extend里面的哪个值?" W6 v$ t, v+ i8 e
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????