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:% p! X: e J& q1 h" z) y: h$ t
Name = (WCHAR *) L"Poke"; ' U2 j, n9 c& g: y @" \. t1 Z# v
hr = m_pDisp->GetIDsOfNames ( w* |; u% v5 a9 F/ w9 `1 ~
IID_NULL, // reserved- c, v$ R5 _8 o& b& Y( v% j
&Name, // Array of names to get IDs for % W1 b Z8 [* o 1, // # of names in the array # H$ @0 R3 V' L5 X \/ z LOCALE_SYSTEM_DEFAULT, // System locale7 v* D6 D- @. I! ~0 E1 N) V: h
&pokeID); // Array of IDs to fill on output( b' R' Y+ x2 W% D! n
5 y: B& [. |4 |2 g# Z if (hr)- h3 i1 W& } U0 x0 S
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MessageBox ("Get Poke Unsuccessful"); $ H# z# d, @) W7 o' o, N: X8 C) _6 R return; , e( @1 N$ U. j/ Z0 a }- Y; W; \- v1 r# N% V) m
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/**************************传递数据给extend**************************************/ ' J6 q+ f* j* O) V pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);# N F) J7 l* U$ n5 b4 J" ]1 F4 D$ r' t
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valueStr = SysAllocString((WCHAR *) L"1232"); . ] o5 G. |4 t1 Y$ `, Z% t VariantInit(&pokeVariant[0]); $ e* G! ^! Q' U' m4 j
pokeVariant[0].vt = VT_BSTR; & C. v% b1 {: [/ F+ G pokeVariant[0].bstrVal = valueStr; ! Z2 t$ P4 y" c/ e2 v) p0 } 3 P% h3 l$ f7 a7 g7 Y/ t, n3 I1 V itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); . X3 w2 a! Z2 X. @& Q! m" Y VariantInit(&pokeVariant[1]); + y# R, V( h& }7 [
pokeVariant[1].vt = VT_BSTR;# p( t1 t* {* G9 j2 f0 r5 S
pokeVariant[1].bstrVal = itemStr;( a b" u8 J" j7 p
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topicStr = SysAllocString((WCHAR *) L"system");: U# F3 ?. h& {- T; ^; F
VariantInit(&pokeVariant[2]); 4 K) _$ q" S! H# [1 k* z
pokeVariant[2].vt = VT_BSTR;: t, r7 i3 _+ l% c- ~
pokeVariant[2].bstrVal = topicStr;5 i! D: u. Z r- t$ A5 O
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// Set the DISPPARAMS structure that holds the variant. - ^/ c# X6 W: f. I0 u * [" @. k+ n7 n dp.rgvarg = pokeVariant;" w' i/ C! ]) L3 P3 f7 Q3 ^* O9 \
dp.cArgs = 3; 3 ~0 J" J, X% M dp.rgdispidNamedArgs = NULL;* B* V2 b) u( R& ?8 F2 y
dp.cNamedArgs = 0; ! m( v- ], J4 M3 J3 z8 ~! Y8 m$ M. ^/ o- w* J9 R
// Call IDispatch::Invoke()* T5 S4 B& D2 ]# w( r _
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hr = m_pDisp->Invoke( 4 c/ ~6 \) M4 q* u3 [8 N" [ pokeID,# I0 f2 c& n; r% p% ^* U
IID_NULL, - E- F) ]; ]# \8 [ LOCALE_SYSTEM_DEFAULT,# s2 Q/ x) U# D, F: L+ j
DISPATCH_METHOD,8 s& W B Y# v9 x% C. K) p1 b1 k9 O$ z( }
&dp, , J9 U7 `: R x( F3 l, k$ u; t NULL,7 U2 Q) f9 q, ^6 a
&ei, ; E- A/ W6 Z6 e4 h8 E7 t &uiErr);8 L% b x. D$ u# [
- a) f t" u. `" ?* B1 p0 ^& N2 I7 `2.这是request的程序+ I p( X/ v! ]- P/ |1 B
// Request a value from Extend 3 p* h/ r/ A9 \7 B! n* f//5 m1 h' E/ b+ g# D: a! T
// Initialize the variant that will hold the BSTR. Set the variant's. v( e" c9 a9 v( `$ V
// type flag to indicate the fact that this variant holds a BSTR. Place the, T( }1 x8 i! T# n7 E
// BSTR into the variant structure.. c. z" ?! [) C& G