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:5 |. S- |2 X9 T7 U7 `' D- D
Name = (WCHAR *) L"Poke"; V5 l+ D- a2 _; \9 o; ?3 r 8 R) J, Y' Q# K1 i) F
hr = m_pDisp->GetIDsOfNames (( [* n5 ~- t( C, f8 _ U2 q5 R6 K. A
IID_NULL, // reserved ' U9 u% b* Y a: a. _- H: y &Name, // Array of names to get IDs for' I! ~0 U' p- J Z( w8 L
1, // # of names in the array # k, |1 G |' U$ S% J3 G LOCALE_SYSTEM_DEFAULT, // System locale ' V k# p& d# t' H! @; [ &pokeID); // Array of IDs to fill on output$ u0 r- N' ~7 v j' u) \9 O5 ~% N
# @. `) ]$ F; M! M8 P9 b4 c if (hr) ; d$ u, U6 b. l* c5 F {: i! j# }0 D' `& |
MessageBox ("Get Poke Unsuccessful");; N9 {# }0 @' q5 p
return; # Z% { h Z" A8 p! f. y& o } " K/ ~2 N/ e* Q4 W% V7 f8 \1 l6 j' K8 V% a c' n
/**************************传递数据给extend**************************************/ ! N7 E, J2 c2 i0 F. d: W- l5 c pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 7 K4 E7 r! Q( P. ]0 d1 M) @4 i& d ) Z( L9 \! a5 X' V4 r
valueStr = SysAllocString((WCHAR *) L"1232"); ! \5 B+ L5 i8 J/ E6 W( I VariantInit(&pokeVariant[0]); & l1 j$ B& e/ \8 D& T: L$ h
pokeVariant[0].vt = VT_BSTR;% k6 \( Z' H( l1 z& H
pokeVariant[0].bstrVal = valueStr; 6 S; c. d4 y. j" k0 \2 f. _ 0 _9 E( n3 I [ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); . q$ N( A' C1 P2 S: f! W VariantInit(&pokeVariant[1]); & u: A6 `+ k8 O+ y4 Y) g! u5 H9 N E
pokeVariant[1].vt = VT_BSTR; 4 D: t+ w* @/ c, y5 _+ C$ V pokeVariant[1].bstrVal = itemStr;, q& Z+ N) `2 |: u
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topicStr = SysAllocString((WCHAR *) L"system"); 6 V" l+ r& n( ~ VariantInit(&pokeVariant[2]); , v3 J) X1 y" k9 k7 ? pokeVariant[2].vt = VT_BSTR; 2 q7 a: g) ?1 J pokeVariant[2].bstrVal = topicStr; ( E7 k3 A6 c: `7 S L6 g# ^3 a9 {5 z" l+ X- ^/ L
// Set the DISPPARAMS structure that holds the variant.; j6 H- u0 C( G1 E' f( u4 I" X
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dp.rgvarg = pokeVariant; + i: {% y6 j* k9 k) ~+ Y0 b2 {# u. [0 T dp.cArgs = 3;/ [4 y5 r) J+ I# u1 W
dp.rgdispidNamedArgs = NULL; ( @+ K& m6 ^+ q6 u K dp.cNamedArgs = 0;9 m u8 p& r- b- E, q' Z
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// Call IDispatch::Invoke(): R" p# l" f7 M1 K5 |$ B
% V, _$ X& p. u hr = m_pDisp->Invoke(2 s. q' V' T; v6 _
pokeID, 6 c1 k- E# J& K8 k IID_NULL, : u7 {+ Y: h- o! ~- p LOCALE_SYSTEM_DEFAULT, # b- l# V0 I5 }0 N DISPATCH_METHOD,, ?0 z, x9 M+ D ^$ x
&dp, - q5 k# X$ H% @% q3 q NULL,9 L6 A! K( C! E$ ~+ T
&ei, + b! }1 _* O! C8 S) N+ | &uiErr);5 x3 O& H2 ]0 p
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SysFreeString(topicStr);3 |5 X2 h1 Y1 e" b
SysFreeString(itemStr); / k. G! y$ g) F c! o4 e! O( H SysFreeString(valueStr);1 Q$ i' E. p, D