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: : \7 q& i: g) r4 ]. _2 }Name = (WCHAR *) L"Poke";+ G y9 g; @# g. b1 w
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hr = m_pDisp->GetIDsOfNames ( 9 B! I; ~6 \" v8 I6 y IID_NULL, // reserved4 C* I8 V. O7 w/ d
&Name, // Array of names to get IDs for0 ~1 W v+ Y) |9 d" p9 A
1, // # of names in the array ; t5 R( ~) a+ @& Y7 ]/ H LOCALE_SYSTEM_DEFAULT, // System locale/ R2 q' k0 b( s- n: E
&pokeID); // Array of IDs to fill on output7 j1 A2 E ^8 Z, R
6 ~! _* N8 r3 e" l/ V, J if (hr) ! ~3 K( g! _3 _; y4 g c7 g { - B' r9 g9 [9 Z9 A, Q3 Y MessageBox ("Get Poke Unsuccessful");- n3 i. ]- A+ _# }7 Z
return; + r" B+ Y: }4 g }# R+ c j4 n; k3 }
j4 `, s7 P4 c/**************************传递数据给extend**************************************/2 ~8 L+ B- [1 n' J( n
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);1 M g3 R8 u7 i
. W* S/ H/ g: A; }5 U) V" R7 B valueStr = SysAllocString((WCHAR *) L"1232");$ u8 V" Z D7 P+ [3 M R R
VariantInit(&pokeVariant[0]); 8 Y+ B+ U9 T# S1 R
pokeVariant[0].vt = VT_BSTR;% r% g( C, m; u( A3 ]
pokeVariant[0].bstrVal = valueStr; - ^2 ?% \& v8 o9 _( t- U( H- o0 e: U! N ) ^7 O/ _3 x& W7 J2 H" J4 ^2 x itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); W% P: u T. F
VariantInit(&pokeVariant[1]); ( S( l4 s" g2 x1 |/ y1 b5 f+ P( U' X
pokeVariant[1].vt = VT_BSTR; 5 r* [6 |# O. X6 \/ M3 o pokeVariant[1].bstrVal = itemStr; $ w& Y6 b& P4 e3 E) t; M( ^$ ~) f6 |; R$ j
topicStr = SysAllocString((WCHAR *) L"system"); 6 ^" O4 ]( C% b* x/ w! I, J VariantInit(&pokeVariant[2]); - `) A: |" M6 j, A& C( i. m4 ^
pokeVariant[2].vt = VT_BSTR; + [6 f$ V# N$ _' l pokeVariant[2].bstrVal = topicStr; 8 z" r! R) r2 H8 k3 |: s- R $ l. e# C5 f- d0 `// Set the DISPPARAMS structure that holds the variant." `% F* b f4 C3 f/ I
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dp.rgvarg = pokeVariant; i# b* g9 B9 V+ A' {/ D/ }. i q/ h6 _ dp.cArgs = 3;* C1 ?; q [- N9 V% s: w% F
dp.rgdispidNamedArgs = NULL; : J0 ^( C- c6 U) s( p+ i5 j dp.cNamedArgs = 0;4 M' f8 l) B; Z3 V
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// Call IDispatch::Invoke()8 C5 M7 j* }8 P' L
2 E/ A3 v8 i- k" j7 V, U, o2.这是request的程序; X4 H# B9 \: C
// Request a value from Extend) Q/ J+ ]; I8 N, U
//8 ^: r. r* \/ X4 Y Q. _( j y
// Initialize the variant that will hold the BSTR. Set the variant's+ y2 _5 l$ l; E) ]+ b) ~9 O6 ?2 p
// type flag to indicate the fact that this variant holds a BSTR. Place the! {! _3 L% b+ A8 Q9 |% y
// BSTR into the variant structure. ( S. ^! ?8 M# ?' [4 G. W2 f7 M( ]' F% f& }
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 1 e) C, z1 v2 i3 R$ p, R 5 p. B' r: L; g: }
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ; \/ w% G/ b5 T: q( W3 r VariantInit(&requestVariant[0]); 7 O/ N+ f$ R/ o! A* o
requestVariant[0].vt = VT_BSTR; ; [3 F7 X8 S9 z$ R! g3 R' E* ?5 ? requestVariant[0].bstrVal = itemStr;0 `: m+ C; b7 b) m( B& A7 v5 C7 @
" _6 }. b9 v+ U5 R3 w' h topicStr = SysAllocString((WCHAR *) L"system");% A' J# o: C+ j, U
VariantInit(&requestVariant[1]); & W5 b9 j. W9 x. n
requestVariant[1].vt = VT_BSTR; 3 r' c; x7 b& D) w7 n requestVariant[1].bstrVal = topicStr;% v2 X9 O6 L; z+ s/ P, P0 I
, O. a# l' |6 [* B5 c% ]// Set the DISPPARAMS structure that holds the variant. * J1 h: i9 y7 @% b- \# h0 e( w) Z9 R" L
dp2.rgvarg = requestVariant;4 X4 z. F, W6 C7 `- [ K% K5 |
dp2.cArgs = 2;$ A2 ]; l6 y' Z: Z3 n( h$ T
dp2.rgdispidNamedArgs = NULL;5 d9 r0 `6 r$ s+ m$ `5 \
dp2.cNamedArgs = 0;3 G9 r( n. S2 _' T1 {7 ?
2 r* Y' k. D. C: W9 c! M, U, F) `! m var.vt = VT_EMPTY;% b# d+ B+ _: P A