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:) Q5 M- a0 A7 z d2 E' Q( m- Z
Name = (WCHAR *) L"Poke";1 Y3 |6 t% ^$ H, y
3 H+ x3 Q! P' d* r/ } hr = m_pDisp->GetIDsOfNames (- c- _: X$ d( @! z8 ]
IID_NULL, // reserved; i/ h/ K* z9 w2 B+ |! ~4 i {* n
&Name, // Array of names to get IDs for 2 v& l' c' o% r 1, // # of names in the array & h. w5 P5 c: ^ LOCALE_SYSTEM_DEFAULT, // System locale3 v6 Y" F7 T6 y2 ]
&pokeID); // Array of IDs to fill on output ; q" e9 l) o1 e3 l. u* M ; Z; N( ]% ~8 r; y
if (hr) $ A% p- I- j( `8 U4 e, o2 ~ {6 }; t8 v% S1 c$ M8 Y
MessageBox ("Get Poke Unsuccessful");. v2 X$ A4 D+ H7 O$ s' T7 ], h
return;- Q( x% A* a, C8 ]5 q
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/**************************传递数据给extend**************************************/1 \! c* X7 B$ G6 x2 e% S! ~: Q" n- j
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);4 h4 {) v2 u( H
4 K0 j# Z! |! ` valueStr = SysAllocString((WCHAR *) L"1232");! M" k$ D }& ^' O
VariantInit(&pokeVariant[0]); ' o p" t0 q/ o" B4 `7 f
pokeVariant[0].vt = VT_BSTR; 8 X( U% ^, | x3 O) _ pokeVariant[0].bstrVal = valueStr;/ O' _+ T1 G3 R7 p; I% g
2 @; j6 L) ?& R! x! Q2 _ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ( g2 \/ K5 S! }' i8 S/ z3 Y, P0 i VariantInit(&pokeVariant[1]); 0 Y. z1 W2 ^: {0 a% v pokeVariant[1].vt = VT_BSTR; - u2 z8 |4 N" t0 J8 k pokeVariant[1].bstrVal = itemStr;$ E0 M, u# f& k2 L( w" C- E# u
g3 P& d$ S: v* T topicStr = SysAllocString((WCHAR *) L"system"); 9 |& O4 W: m( U/ X# A/ { VariantInit(&pokeVariant[2]); 9 @0 r* e2 ?) v' F% n+ d pokeVariant[2].vt = VT_BSTR;5 o' L% O8 N7 a8 n) j+ M) }
pokeVariant[2].bstrVal = topicStr;# J/ j. Y9 _. ]1 E: ~+ V0 D
9 w- w& W: z/ R1 C6 J: l# j// Set the DISPPARAMS structure that holds the variant.: r( V- v) f* f* J
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dp.rgvarg = pokeVariant;3 w3 g9 g; k& L1 C; f$ l7 t
dp.cArgs = 3; * J! K7 f" z1 a+ j dp.rgdispidNamedArgs = NULL; - H/ z1 p( i4 b; ~: _: W9 O& f dp.cNamedArgs = 0;# q8 [% S& R) ?2 m* R
: o7 C2 }; b) S& e* T// Call IDispatch::Invoke()& i/ ?1 u+ p- O& y/ u% r0 e+ D
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hr = m_pDisp->Invoke( " f$ f c# Y0 Z, |5 y8 ?- b pokeID, : S6 T. D$ |' L" w" s Y8 h IID_NULL, ( K" w" D5 q, d J LOCALE_SYSTEM_DEFAULT,7 y1 L5 U4 x$ H: }' o+ x7 N0 s
DISPATCH_METHOD,2 ~: a7 N- H1 W e. Q
&dp, + i7 Z( [3 Z: a0 @0 d3 b NULL, 7 s" o( d6 n4 W &ei, 7 v( o8 a8 C/ k8 ~- s &uiErr); # ^- Q3 l( F. y - Y+ l; W/ X" W9 N SysFreeString(topicStr); ; C0 s; L: I% f+ |& D* k SysFreeString(itemStr); , ~) [& m+ p9 W SysFreeString(valueStr);/ _$ s: y0 l0 m5 Y
t) d" Z" V4 k6 m2.这是request的程序7 s( n; b3 a( ^9 o7 o( l+ e
// Request a value from Extend % W3 N) d$ z& L% k/ C// : s3 \3 i% h5 a// Initialize the variant that will hold the BSTR. Set the variant's& ]- Y, R: P: r, Y
// type flag to indicate the fact that this variant holds a BSTR. Place the : L$ Z7 d. z# a) D// BSTR into the variant structure.& Q2 B2 l3 t E% `" Z, w" X' j