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:9 T7 |" p5 C! f" e$ e' D, r4 D
Name = (WCHAR *) L"Poke"; ; C! |$ u7 V; V) D 9 {4 a$ f- U- l- h7 b; F
hr = m_pDisp->GetIDsOfNames (5 [7 q8 |7 q. G9 e
IID_NULL, // reserved' g" Q1 k8 K* G' J
&Name, // Array of names to get IDs for / }6 _" @- a( E5 y7 y2 I 1, // # of names in the array \3 [) Z# P1 I% ? LOCALE_SYSTEM_DEFAULT, // System locale5 }8 j3 {0 b' e: J
&pokeID); // Array of IDs to fill on output2 Z. s% R/ v: p% f. h
0 M, }: W: n: i: W5 V if (hr)6 z! e$ S+ A: j& {* V) [
{ 5 N* j: p4 G- b! M* Q7 b MessageBox ("Get Poke Unsuccessful"); 7 m; h/ B* U( y return;" O5 Q! o, G! }$ d6 ~
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/**************************传递数据给extend**************************************/ / H2 b# R4 H9 E, I: T pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);7 p( t, Q4 g+ O- P: @5 V; P4 s
. V f( M" A" n6 F# Z: B: O/ X) { valueStr = SysAllocString((WCHAR *) L"1232"); ( N2 b8 A8 J* g$ W6 T7 y7 H# A VariantInit(&pokeVariant[0]); 4 t& R* Z# J# k, a pokeVariant[0].vt = VT_BSTR;' V2 _! L+ P: o+ N$ \* r9 F
pokeVariant[0].bstrVal = valueStr; : c& Q5 Z+ T" w) D4 R( |$ P' \ 4 [9 V$ Q* Y5 q) D8 L( { itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ; e' g$ ]3 E* N9 k VariantInit(&pokeVariant[1]); . o0 Q1 k [! l0 |; b
pokeVariant[1].vt = VT_BSTR;' y( f3 e( `9 k3 n1 d# {% K8 }
pokeVariant[1].bstrVal = itemStr;4 Q/ t: V$ U& D! s
- X% J& V& E$ f; k% v2 {
topicStr = SysAllocString((WCHAR *) L"system");2 z, w/ O. Y: ^' ^
VariantInit(&pokeVariant[2]); 6 p# C- V. d) K( n4 E0 u+ I pokeVariant[2].vt = VT_BSTR;" t+ y# g; F# l
pokeVariant[2].bstrVal = topicStr; . Q& u7 W% u1 A! k- j3 n# E2 P( S% H! ~( \
// Set the DISPPARAMS structure that holds the variant. $ }0 ?1 s' d" K( a' q1 E2 w9 w, ?& q; ^, @- Z7 ?7 L0 d
dp.rgvarg = pokeVariant;2 q" Q3 H+ e0 w4 J0 l B
dp.cArgs = 3;9 I0 x W- j; y+ e- F4 m+ q
dp.rgdispidNamedArgs = NULL; 1 V. j6 D: @* m. H: {% @ dp.cNamedArgs = 0; 9 s8 O# W- [# j' _* g - |7 O& R9 `1 I3 i0 [; |# t// Call IDispatch::Invoke() & M! i* l9 L; E7 U7 N% u % F* v7 M+ [1 b: x6 y hr = m_pDisp->Invoke( : D2 q1 ]- [8 @$ m6 e. O$ P7 l, c pokeID, & ~* l! |1 J, S+ l9 W0 P: T IID_NULL,! n% R: k0 Y# q1 { r% {
LOCALE_SYSTEM_DEFAULT, , ]. [3 L! P0 P6 A4 s: [- L1 L3 d, j DISPATCH_METHOD, $ y) k! j3 v$ B5 ~/ Q &dp,7 m. h7 b) v9 ~$ B* t2 P2 z
NULL,# I4 T: Z+ w0 N& W% V
&ei,( B. z k: ]* ^& E' b4 P0 E- c
&uiErr); # b3 X% L' P1 o$ S0 T$ X8 R" L% q3 V1 w. m" f) s8 b
SysFreeString(topicStr); P* s2 N# u+ J9 t! J0 D! z SysFreeString(itemStr);* _; s+ K( R, I: {/ f
SysFreeString(valueStr);1 Q8 E' ^8 S$ M3 c# h# o
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2.这是request的程序; y) V+ ^8 D5 b: F3 q7 F1 d
// Request a value from Extend: Y- m |# {" m
// & D* ^9 G( s# r! B6 R2 a// Initialize the variant that will hold the BSTR. Set the variant's5 m W4 R' {! `/ a7 h4 X
// type flag to indicate the fact that this variant holds a BSTR. Place the 5 E. j* J) m( r( B2 l9 W2 N7 o// BSTR into the variant structure./ D% r+ J- B5 r' ^4 V9 Y7 N, q8 C: W
3 b* V$ c+ a' G requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);" d6 S1 v# S. w
" p! A$ y/ {/ |, F; n
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 2 O9 o; X* |" V% v& [6 ^ o VariantInit(&requestVariant[0]); / E4 u- {7 v9 {$ @/ v2 n requestVariant[0].vt = VT_BSTR;/ A& H( _& ^; d$ e* G% a8 N
requestVariant[0].bstrVal = itemStr;# N8 _" `" ^) D* k. m/ d. b
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topicStr = SysAllocString((WCHAR *) L"system"); ' B! e! U8 e# l% @ VariantInit(&requestVariant[1]); 7 \. \( [$ H# o7 G requestVariant[1].vt = VT_BSTR;% x7 A( u5 l" j7 J4 g
requestVariant[1].bstrVal = topicStr;1 E. T2 W6 a0 X: o" @
0 B+ |5 ^. C/ j// Set the DISPPARAMS structure that holds the variant. Z* d6 A/ `: ^2 }" s' a3 S% t4 r3 l9 U# N5 _
dp2.rgvarg = requestVariant;! K; Z8 E& F" ?( v* y7 s6 e
dp2.cArgs = 2;# ~* Z/ J, a. l# S) a, n, w2 G
dp2.rgdispidNamedArgs = NULL;" I U/ z; M) `8 i8 Q
dp2.cNamedArgs = 0;: Q$ O# h1 G2 I7 q. s$ R. h
/ P% d* m) o8 T. `
var.vt = VT_EMPTY; & L% I$ D- N% A2 ?3 c2 V+ j 8 `" E# W) S( g6 U/ z: ]4 \1 M// Call IDispatch::Invoke()5 \# ?0 D: a* }2 o7 }
: O" I+ h; H( H) D$ ^! C4 J hr = m_pDisp->Invoke(! t: W0 m |" S N. {) a
requestID, ' u- j; J9 L! Q) v IID_NULL,. W# L$ f8 D( Y$ S& ]( U
LOCALE_SYSTEM_DEFAULT,( | H% |; G! D7 A/ A4 H7 V, E
DISPATCH_METHOD,$ z. K' |+ }0 G( Z1 G
&dp2, # N% N9 D, I( H/ Y, q &var,8 m* @$ C% `7 `$ ~: v7 j
&ei, 6 F- m9 p+ x" e* T' V &uiErr);8 k6 o) m& I) X; o& Z% T
4 G" Y1 `# }9 @- _/ }2 f9 D SysFreeString(topicStr);: d# G) w$ c3 f3 y4 w
SysFreeString(itemStr);. e8 n3 ?# ~ w% K- e: z9 I
请问该程序是获得extend里面的哪个值?6 N, h1 e$ n1 M9 ?7 D) G, X/ ]
如果我希望获得extend程序里面的某个变量的数值,那个c++程序应该如何实现????