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:% `9 z2 T" r6 \% d& i
Name = (WCHAR *) L"Poke";+ a8 f# D5 \3 E' s
8 h2 }- m' o2 }/ o
hr = m_pDisp->GetIDsOfNames ( + w: b. `- L1 c- k9 ]; e" p. t' } IID_NULL, // reserved / W0 l" f/ c7 h% u &Name, // Array of names to get IDs for & }$ S+ h' k/ a) }. {; d) p 1, // # of names in the array * j. R# g$ }' }5 ^9 r" q LOCALE_SYSTEM_DEFAULT, // System locale X+ ?0 _# W6 Z5 x A* K &pokeID); // Array of IDs to fill on output : ` X, A6 a* Z2 g! Q2 n, C) e % d, g- j/ z2 k2 U: H5 f! e7 { G
if (hr) ' n* F+ z+ z0 ]- o {& V) Q$ g: K0 z6 w' S& U
MessageBox ("Get Poke Unsuccessful");: V( H3 O, l/ p' r8 ^! G2 V8 E; D
return;7 y) s, S! B+ U& C2 s
} 2 }" j! S M) k. |, O * S* T) s* C0 ?& a/**************************传递数据给extend**************************************/ " R* O1 x: H; A. q pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);5 J- F1 M7 d4 t) P, ~
% L) F7 @1 ?6 ]1 u- { valueStr = SysAllocString((WCHAR *) L"1232"); 2 A. Z) n. s- F5 G VariantInit(&pokeVariant[0]); k4 L! J! @# k$ I5 j& g
pokeVariant[0].vt = VT_BSTR;% {, D" A$ B2 P4 \' ~4 J0 J
pokeVariant[0].bstrVal = valueStr; # b- h7 O7 W) m3 L0 M5 b, A V6 \# {; o. ?4 W/ q5 I
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");2 k0 |0 s J+ n* s* ^/ y
VariantInit(&pokeVariant[1]); $ R+ j( G5 ^, t pokeVariant[1].vt = VT_BSTR; * z! c7 Z- |. x S pokeVariant[1].bstrVal = itemStr;8 ~# |2 _, k' |" _# s% s
- E1 `# W) h) C4 p
topicStr = SysAllocString((WCHAR *) L"system"); # O8 a6 P4 j; R+ r! p5 P6 Y VariantInit(&pokeVariant[2]); % u( ]; r0 i. h6 D4 Q- [& B- [
pokeVariant[2].vt = VT_BSTR;' A4 s3 X- j. T" O, u+ n/ j
pokeVariant[2].bstrVal = topicStr; " B% V/ \0 P% @' D* \5 m) F ; s& v9 E5 z6 Y2 D- l// Set the DISPPARAMS structure that holds the variant.% s4 i# y; O' S9 o+ y
: q4 x, g0 R! j" L5 V: F
dp.rgvarg = pokeVariant;% u" V& C2 ]' p2 f; r( m! `9 a) l
dp.cArgs = 3; , H; h$ K7 U/ i8 d+ a) k2 T G dp.rgdispidNamedArgs = NULL; N; y% t4 i L4 E* W dp.cNamedArgs = 0;9 Q; D( v. n5 Q2 }! `: R
$ O) r7 D: {/ f0 k; w// Call IDispatch::Invoke(), L' i- k7 T4 h, y t- e% g
$ L, k+ A4 P) B8 [ hr = m_pDisp->Invoke( 5 S% @* x5 M9 M5 D pokeID, ; @2 ^! ~% j' |. t1 h% P" ]" ` IID_NULL, 3 M' g1 H0 P* V/ M5 v LOCALE_SYSTEM_DEFAULT, ; o# [" [7 d7 z+ {/ X! Z6 o DISPATCH_METHOD,. h7 T+ D2 T' X) `
&dp,: u! x- S8 l4 V: d' y( r% Y5 G# T2 e
NULL, + \. V0 k" t: r- i, t8 u% X &ei, % m! m- d1 K* H- Q8 \ &uiErr);# }; q, Q8 N" O4 W6 `% x
# o* ?& b" `9 X
SysFreeString(topicStr); 6 K3 m1 Z+ N6 F( Q SysFreeString(itemStr);5 ]0 t J* H7 ?' D) r
SysFreeString(valueStr);7 }, m1 d, S/ x3 Z" x