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:' Z1 ?) }4 C* C; k% V
Name = (WCHAR *) L"Poke"; 8 P% c) ~# y. q3 ]) d5 g, Z % s# i7 h( A; n$ T; i! ~# k hr = m_pDisp->GetIDsOfNames (7 h7 o: Q: \3 ]4 U) N& u9 c2 d) |8 T
IID_NULL, // reserved & N9 B- \ h- a6 R &Name, // Array of names to get IDs for% ?8 a) f8 ]6 Q, H
1, // # of names in the array% @3 O* Y0 a$ M% Z
LOCALE_SYSTEM_DEFAULT, // System locale( b( W, h e0 H% `
&pokeID); // Array of IDs to fill on output3 U! a+ _- @$ @) e
' S' E# b, R. l7 E4 B F; l if (hr)1 d2 s3 ?1 w: w! j. o
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MessageBox ("Get Poke Unsuccessful");: w( D8 I, u* V: I6 @, g
return;8 o: R2 I! u( Q4 I& {
} $ z7 O( ]+ l$ C# N 8 {% s1 K$ `& p/**************************传递数据给extend**************************************/4 G. d! p! e, r x7 @
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); u# R. \' k, |& q; k % K" G$ I0 R% \; s0 C% j; j% Q valueStr = SysAllocString((WCHAR *) L"1232");$ n q1 V, o6 V( ~2 `! ~; v
VariantInit(&pokeVariant[0]); 6 U D+ m" N$ B3 G' X9 t# Q
pokeVariant[0].vt = VT_BSTR; 3 T; }. ?! C- J7 I pokeVariant[0].bstrVal = valueStr;* f; t1 Q! C! B' d1 h0 k! j# ^
" F' j- k( [' M1 N itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 0 K' \# K1 [; x4 r. O VariantInit(&pokeVariant[1]); $ c8 I* `' K5 U- ]& B5 Y! q pokeVariant[1].vt = VT_BSTR;8 Y0 H; a; W; I) ?
pokeVariant[1].bstrVal = itemStr; 1 m$ g5 u d1 n: a) e/ t; \8 I- Q; }9 G4 k/ e$ [8 f
topicStr = SysAllocString((WCHAR *) L"system");7 q1 o' k+ W, a# l1 U
VariantInit(&pokeVariant[2]); 9 y; O/ b: e% ~" n# w2 M0 s. z pokeVariant[2].vt = VT_BSTR; ( o8 J8 e* T7 h C+ e( \ pokeVariant[2].bstrVal = topicStr;) {0 g' E s% ~
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// Set the DISPPARAMS structure that holds the variant.0 {" B8 R& y/ t! l
3 d: K7 w5 s( T4 Z$ _& x8 D/ s" r- d dp.rgvarg = pokeVariant;% [" s" o# E+ g! I# p
dp.cArgs = 3; 9 }+ Z3 Y5 Y0 Y. R dp.rgdispidNamedArgs = NULL;5 O$ A4 R5 Z r8 T! l7 h5 F& E
dp.cNamedArgs = 0; , s3 e# s6 z' U v2 \8 T% H6 m! C. e5 j6 L; k0 X
// Call IDispatch::Invoke() . b2 R" c3 l1 @! E 5 n9 f/ e. X. N, U hr = m_pDisp->Invoke() m8 P, K; g" l' F
pokeID,( |; h# L/ c9 q9 R! R1 V l" W
IID_NULL,# E% y, G# P5 k# H, W/ R% ?
LOCALE_SYSTEM_DEFAULT,# J& d) U- Z* X3 y$ K4 n; L% c* X
DISPATCH_METHOD, ' h. c4 p& \; h5 ]! C &dp, 5 i. P3 q, o% e7 V+ t! a NULL, ( H/ L; N' _! ?4 U$ r1 U8 j. D- s( v &ei,3 W' d) U3 f9 T; F2 ]) U. ~9 ^/ b
&uiErr); " p/ S+ ~2 k- K9 p! b4 f6 t8 M0 v( o9 W8 o
SysFreeString(topicStr); $ J8 k6 F7 m/ g0 z SysFreeString(itemStr);, }; I# v4 N3 b2 o' v5 I8 B
SysFreeString(valueStr);# {, _* f& A9 I$ d: \& ]! |% w0 b8 t
! ^5 v" a2 U2 T5 X( y Q$ K # k, G+ ]) [/ I* J$ g; A g2.这是request的程序6 |" W* V" j# ~) N) V
// Request a value from Extend _1 B! L5 l6 Y- x7 K. ?9 F; s
// 5 u. j0 `5 ?0 s! U1 U, L! `2 ^. d// Initialize the variant that will hold the BSTR. Set the variant's9 K5 v3 ?! K0 m( Y X* ^7 D
// type flag to indicate the fact that this variant holds a BSTR. Place the& ~6 z, v1 x' b" ~* Z ?" a
// BSTR into the variant structure.- i/ M. _, F5 V5 E
0 D8 T1 m W& }; A+ o' `. Q requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ) g! N6 F. r/ ]" S5 n' \ 0 H) t3 \5 Q$ u4 J- D
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ' r& B3 B8 L8 ^( b( n6 | VariantInit(&requestVariant[0]); ' M: q' F. K+ e3 ~
requestVariant[0].vt = VT_BSTR; 6 F$ ]1 ?+ Z! P requestVariant[0].bstrVal = itemStr; , `0 g1 j9 n9 }1 a/ J% h% B8 m# \$ s: E
topicStr = SysAllocString((WCHAR *) L"system");! u* o( S. k0 s2 E, ^+ B
VariantInit(&requestVariant[1]); 9 L# l/ u. W% }( ^. {/ N3 W requestVariant[1].vt = VT_BSTR; 7 b9 S" R3 v6 o6 o requestVariant[1].bstrVal = topicStr;* i# D3 @- k' q) d0 s8 b5 ?" S6 o
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// Set the DISPPARAMS structure that holds the variant.9 q# s2 b& K! }, f7 y1 z, J6 g
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dp2.rgvarg = requestVariant; 9 P) A5 H) s) a3 e( k) _0 | dp2.cArgs = 2;' T* L# `) v) c( ~. N* G" C/ w
dp2.rgdispidNamedArgs = NULL;# b; i* M# o3 a" [, U
dp2.cNamedArgs = 0;3 b% e, R8 J& u9 t9 a# @$ H
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var.vt = VT_EMPTY;9 c1 }; t* }, v+ h
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// Call IDispatch::Invoke()! E3 a# U) J' b( D3 p* g) j
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hr = m_pDisp->Invoke( % o0 s) p4 `7 J requestID,6 i: Y5 j: {# t" b$ l" N
IID_NULL, 9 k7 @* G" [7 D) U# m# g LOCALE_SYSTEM_DEFAULT, S" j8 J# z% t7 f7 d$ k3 X3 [5 j DISPATCH_METHOD, 2 z. y' ?# J( |% S, Y4 N u+ r6 b F8 ^9 i &dp2,$ J/ f( r% _# [
&var, $ x0 l- d6 R9 U! S; w &ei,* Q7 \* a+ h. S: _6 P2 |$ d
&uiErr);& \! f5 E* J0 a) L% w) R