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:' L9 F: c& t9 t h1 R6 K
Name = (WCHAR *) L"Poke";# y( u- g# L: [3 d
$ G$ a( z! E2 x4 M u& h hr = m_pDisp->GetIDsOfNames ( # v+ {2 [8 y" _ IID_NULL, // reserved 2 D I( B* }) N( M* x &Name, // Array of names to get IDs for + g7 w* W+ n$ i9 O5 e" y/ Y 1, // # of names in the array & D# s( Z3 ?4 m; V! [ LOCALE_SYSTEM_DEFAULT, // System locale 0 |! o1 r" Y+ F( M9 O6 a2 Y &pokeID); // Array of IDs to fill on output- u' f I. y- I/ u
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if (hr)+ m! s4 r3 w/ a% F9 v* F
{ ' ^7 {' Q9 z* t! i0 z MessageBox ("Get Poke Unsuccessful"); 3 H* g3 p# E+ E5 f4 W return;+ y. R: k1 H/ e9 [7 g& f
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/**************************传递数据给extend**************************************/, d4 O% p: C* y* l9 L& N5 ]
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);* |' k6 e/ D! X3 t
1 q1 `& o. E, F( ]- ]6 D/ N1 g valueStr = SysAllocString((WCHAR *) L"1232"); 3 Z& C% j+ v0 Q4 u9 Q. w VariantInit(&pokeVariant[0]); ! U' ~ f* k* e+ R4 p% | pokeVariant[0].vt = VT_BSTR; 0 v1 w' q+ H, N4 n; W, q% Y7 }. \ pokeVariant[0].bstrVal = valueStr; 1 S3 y* `9 ~# j/ J 8 {" n- c. l& _ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 1 q" n# Z7 i$ J VariantInit(&pokeVariant[1]); ' u9 c3 j @) B) l" v/ [ pokeVariant[1].vt = VT_BSTR; ( L; e6 ]) L4 y) E1 o pokeVariant[1].bstrVal = itemStr;6 L% h! g( `% x
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topicStr = SysAllocString((WCHAR *) L"system"); / G$ M+ x4 n% r% b9 k VariantInit(&pokeVariant[2]); Y' m* p" U4 t# V! R# [
pokeVariant[2].vt = VT_BSTR;" H1 O0 j5 u: | J: X @
pokeVariant[2].bstrVal = topicStr;% |6 u: k c( p7 Y! d$ M
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// Set the DISPPARAMS structure that holds the variant. : v+ i- x) P( U- ?' Y 5 |; \# _/ v7 ^$ E1 S9 | dp.rgvarg = pokeVariant; 0 m4 p; k3 {- V U: L- \/ T' a$ k8 h0 x dp.cArgs = 3;. F3 X# n( N9 a! x9 d$ W
dp.rgdispidNamedArgs = NULL;0 T5 n. w0 i2 \5 e: v
dp.cNamedArgs = 0; $ s4 M5 `! [2 ^0 p N7 W; p/ T! D0 p3 z" w, R// Call IDispatch::Invoke() 4 z) L" e3 F: h5 _ E& C 4 B- N. h; W: G" p6 p hr = m_pDisp->Invoke( 8 k: B1 j: i$ b$ I1 E pokeID,, k2 X6 r/ L" H' V. [2 P. C, G
IID_NULL, & _5 S2 i& N0 _) V LOCALE_SYSTEM_DEFAULT, ( Z7 @6 T7 [0 ^/ r2 X. q DISPATCH_METHOD,3 x6 O- h( m |
&dp,' N9 Q- m! I1 T ~- F
NULL, & W& o: Z* x5 \ &ei,0 g5 K2 k5 l- b/ ^+ b( w4 R% d# A, ^
&uiErr);4 i% J. n! k& p6 G1 f8 K
& W0 ?; J. Q' d7 e SysFreeString(topicStr);7 v5 E# m# L# E5 n' D! D1 B1 C
SysFreeString(itemStr);2 g) H& V$ M, R- `" D/ w/ H- d! Y2 m
SysFreeString(valueStr);+ v2 |9 \" w- j: \8 {! E% X$ x