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：: a/ x @5 c) _% T+ ?6 o
Name = (WCHAR *) L"Poke";$ I+ s2 Z+ f& J" R$ k
; o) b* l9 b% {- k hr = m_pDisp->GetIDsOfNames (8 z& e- ^2 e( `7 p. I$ ?% U" ^$ C
IID_NULL, // reserved 3 Q0 x: D6 V- g/ A" B &Name, // Array of names to get IDs for& ?3 R* J& K6 v5 E" h! S
1, // # of names in the array ~, l7 W2 S4 ]9 \+ N( t3 Q l4 Q9 n
LOCALE_SYSTEM_DEFAULT, // System locale$ X" }' t+ W* D6 t
&pokeID); // Array of IDs to fill on output . t8 o; Z" p) {, `7 O4 U . [' J% V- i. W! @& K if (hr) b% g0 b( Q. _9 m5 ^
{+ D" e9 n8 q. W* ]
MessageBox ("Get Poke Unsuccessful"); * O6 g6 E0 s8 W return; & `, J1 a$ \2 d d } , O; j; D) D/ T & k1 i3 T* x) H0 ~& O" H( x0 F( G/**************************传递数据给extend**************************************/- |2 ~/ w0 A- H; L
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);9 T" r f" M, n; J
' P- }3 ?! j" D5 s8 u
valueStr = SysAllocString((WCHAR *) L"1232");2 R: B) K2 m' l+ j' i
VariantInit(&pokeVariant[0]); 1 }' `: C! T$ `
pokeVariant[0].vt = VT_BSTR; * V1 k7 c m- j2 h& | pokeVariant[0].bstrVal = valueStr; 1 I3 X, F. @$ t0 M( v2 p* D# \# }3 h8 z3 s, N# F
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! ?( k8 X9 U6 E6 ]+ Q$ R
VariantInit(&pokeVariant[1]); # Z2 k! D- o# c8 J* |, q( o pokeVariant[1].vt = VT_BSTR;3 S7 M! \1 {! `7 t# |1 t }4 `
pokeVariant[1].bstrVal = itemStr;; j' s1 M% w8 P+ Y
2 ]. f' K/ x3 I4 ]1 S topicStr = SysAllocString((WCHAR *) L"system"); ! N! k9 ]# t) B6 u2 Z* L VariantInit(&pokeVariant[2]); 7 m+ c6 j5 T; v# Q N, `$ y1 I1 D
pokeVariant[2].vt = VT_BSTR; ; T# ]5 X2 ?( |8 Q pokeVariant[2].bstrVal = topicStr; 5 o: [8 W$ V/ y- V* h) I" N $ [* r6 j5 J+ k, ~' [// Set the DISPPARAMS structure that holds the variant. , v$ }7 s8 {' l3 I H0 @) J8 ^. b; u5 o% [/ b3 N4 G! R
dp.rgvarg = pokeVariant;3 d" R( h% a; f5 q
dp.cArgs = 3;) r7 e/ h% d/ j2 v9 }$ h1 ^
dp.rgdispidNamedArgs = NULL; . l* p9 }# d# s7 }4 U* w dp.cNamedArgs = 0; ' C4 X8 u' o7 Z, x% @ , I$ ~9 W7 t- G& H1 \% @+ n// Call IDispatch::Invoke() - T# `1 [7 h1 H3 X) D4 P. C# L2 v, I( M: C3 }' \9 p K1 L f
hr = m_pDisp->Invoke(4 ^' D; b F! U0 Y* T+ {4 w( v, G
pokeID,. ?6 |+ D2 H3 Z
IID_NULL, + k( V4 d. b8 D" y6 X# w LOCALE_SYSTEM_DEFAULT,! x3 m; S. Q& p
DISPATCH_METHOD,/ W0 F: p/ y5 O$ Q k/ p. G3 `
&dp, , h `7 l% Z8 a3 t NULL,$ @1 P- ?8 L, P. H. |1 c, f
&ei, 4 O$ t, W! A _2 j6 V &uiErr); # D7 c" S0 a( z. X+ B2 u! C% m) o5 ?1 E' Z
SysFreeString(topicStr);$ p, Y# a$ b& _
SysFreeString(itemStr);2 W0 V% W- Q/ @4 \) ~; G
SysFreeString(valueStr); 8 J+ T9 o* p6 N0 a1 o & N. s* N+ T# f0 y V现在这个程序可以实现将1232这个数据发送到extend，extend有一个对话框弹出并出现1232这个数据，不知道这个对话框为什么会弹出并显示这个数据？？？* ?- S* O, }, c. b
此外我希望将这个数据赋给extend程序里面的一个变量，请问如何实现？？？？% G5 i6 b/ M* [4 F, a
8 j' O- W. _' ~, J) x5 D) r2 _ : a0 |2 t; ?5 }: {2 e9 L S. x& A2.这是request的程序 ! {6 |2 }7 C* [+ g// Request a value from Extend, q% T3 a% G5 A" V$ w) A
// $ \$ X+ B& P8 `" w) v// Initialize the variant that will hold the BSTR. Set the variant's, L. }6 r* d' |
// type flag to indicate the fact that this variant holds a BSTR. Place the4 \6 L3 j& C6 t0 }( e
// BSTR into the variant structure.& g( Y9 _" o4 k; O2 t" D
0 ]1 |8 }! F- C$ o% u; O! u& A3 u
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);1 m2 O, D& S8 U8 D' a. @
, `! ?! o$ G3 d& c" d0 ?, T5 }% | itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");3 k' I6 M/ J$ a) y' Y; n B' p! n. k
VariantInit(&requestVariant[0]); 8 O+ B4 L! b# e5 O5 L1 ^( ~) [ requestVariant[0].vt = VT_BSTR; v; z) N. S, y: a4 u; _
requestVariant[0].bstrVal = itemStr; " X$ t* w2 O% Q) {/ H6 i7 B: Z, v( c5 _: i. X- q' T; T& e6 S2 W
topicStr = SysAllocString((WCHAR *) L"system");3 ^/ o7 F, b1 s6 I
VariantInit(&requestVariant[1]); , D1 {, {' v! W. N
requestVariant[1].vt = VT_BSTR;- T! y) H. A5 t9 o% @! h
requestVariant[1].bstrVal = topicStr;1 E5 c6 v# D( j0 T
: @' t f4 R( B, s* h8 X9 R& K// Set the DISPPARAMS structure that holds the variant.( U, a: Y& x2 Y+ }9 j
t; {. ?5 c6 j; b) f9 U' n1 [ dp2.rgvarg = requestVariant; ; C% u% a8 Y9 z& E7 e dp2.cArgs = 2;3 p* f5 ~/ M- Y8 I' J6 c
dp2.rgdispidNamedArgs = NULL; ( E0 R% a) o1 }: M2 [2 f$ y dp2.cNamedArgs = 0;2 i" e. ~" f& M) R$ q
- V2 L6 {* e! f1 y# [3 ~; J0 |% w var.vt = VT_EMPTY; 6 x% F% P( p/ _$ S3 E# Z. A" H- ^/ r0 d! m( T
// Call IDispatch::Invoke()& N6 J0 D. K' G$ c% g N
7 I' P' F2 W0 |8 J/ A
hr = m_pDisp->Invoke( 0 q v& n+ S7 E3 U- Q5 J requestID,% M/ u8 x& I: E+ K. t/ @
IID_NULL,, t; E' P7 B6 L: [
LOCALE_SYSTEM_DEFAULT, 0 w. d/ s) B# ^2 a7 `) E W( s8 | DISPATCH_METHOD, - \) y( ~- U9 i5 [1 D( j, U &dp2,9 }2 `/ A8 W- s
&var, + }) W6 \: v- d! F &ei, f! S& J( o4 o& \1 i' s7 ]) q1 e# B D
&uiErr); ; d) j& s, b: F# z* n: a8 Y: h4 n ' U4 v8 r' K, K/ x2 y1 L2 e% d4 V SysFreeString(topicStr);% j/ @8 m9 x) Y9 V m* ~ `
SysFreeString(itemStr);+ Y# @+ [" }8 n9 M& T* T
请问该程序是获得extend里面的哪个值？ ' _; s' s' c3 X6 Z# W4 }8 @! 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？？？？
发表于 2008-11-25 19:37:03
