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 a8 v# V( [! T, b& u# i- g# H! k
Name = (WCHAR *) L"Poke";5 i; B/ b k) c5 q# ~
2 E+ D+ M0 y$ t2 v! l$ ~1 a hr = m_pDisp->GetIDsOfNames (1 @- e+ `( s( m+ n
IID_NULL, // reserved 1 V/ }( K( L5 `+ b- K &Name, // Array of names to get IDs for % b# l' {& O' w# x4 u 1, // # of names in the array8 n$ U4 z. ~: h7 b/ j! X
LOCALE_SYSTEM_DEFAULT, // System locale ) m" Z: i/ ^8 @$ F &pokeID); // Array of IDs to fill on output! |0 M4 {5 U. R3 ?9 n) \
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if (hr) . P9 [; J" Q6 G { % f3 h9 S/ ] M0 p/ Y. \ MessageBox ("Get Poke Unsuccessful"); " c5 \. _2 ], t$ Q d# m/ w return;) O( M) k$ ^' y; x/ \$ s
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7 T1 O5 k2 V" T" ?/**************************传递数据给extend**************************************/ : {! v3 o/ x1 [+ U pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); % B% F! v& n6 ~ 1 e* l" U4 c+ `$ t) o3 v
valueStr = SysAllocString((WCHAR *) L"1232");9 X: }0 S6 S0 P- L
VariantInit(&pokeVariant[0]); $ ^( ~" E' S" i7 d' [% u/ h& \ pokeVariant[0].vt = VT_BSTR; * V! s5 u' h) U6 a& V' A/ W4 ]7 C pokeVariant[0].bstrVal = valueStr; 6 V1 v3 U5 ]" C7 J, o. E& a: v) L) R$ ]: i/ w- E5 V( h
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");% f; c+ r" x1 L
VariantInit(&pokeVariant[1]); . [$ Y9 g5 H o
pokeVariant[1].vt = VT_BSTR; ) E+ q7 `4 t) r; _9 R. e# ] pokeVariant[1].bstrVal = itemStr;4 @5 _# B5 `* H8 L4 S7 u! s7 a, ^
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topicStr = SysAllocString((WCHAR *) L"system");' J) x! `" a/ I; g( ?
VariantInit(&pokeVariant[2]); * c( F. z/ M9 N4 k' F7 g
pokeVariant[2].vt = VT_BSTR; 7 h/ E) S# n- N# ~% E! I pokeVariant[2].bstrVal = topicStr; 9 c9 w' p1 m( ~& n( i. f/ F; p6 Z/ C8 t3 w+ L- G
// Set the DISPPARAMS structure that holds the variant.0 V6 U$ ^ r; o" k; ~$ p7 a
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dp.rgvarg = pokeVariant; ]% R: V+ ]4 P$ D2 ` dp.cArgs = 3; 8 x" N* f& i! D6 E: o dp.rgdispidNamedArgs = NULL;1 p7 G8 d7 x6 r6 W. U
dp.cNamedArgs = 0; 7 b0 n' Z. r( y V# M & J& S5 ~% |$ j! F5 k// Call IDispatch::Invoke()7 i& ?* B9 c( Q' b6 H5 H3 H, j
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hr = m_pDisp->Invoke( % |+ Q+ _9 h" i( r( n pokeID, 1 ~( Y J" R9 E+ _ f IID_NULL,3 U) ]7 M2 J0 f$ Y' r
LOCALE_SYSTEM_DEFAULT,* ^- l( s+ x* [# I4 ?
DISPATCH_METHOD, 2 R4 ~/ @+ w" z0 y &dp,% x2 _, X, B6 o9 u
NULL, - _ E: l" I3 a &ei, 9 j; e* K8 P' l: X &uiErr); 4 X( t! u9 t/ p! l" a# V6 K ) r# [8 [3 |2 X% d1 ` SysFreeString(topicStr); $ ]' Q2 O4 P3 Z# b% q0 z- ^ SysFreeString(itemStr); 3 S3 W8 G1 \$ I9 B0 ]! _+ e SysFreeString(valueStr);( R' R" r$ Z8 Z6 Q' [/ g) B; H