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： $ O( G9 x- s; N. E" YName = (WCHAR *) L"Poke"; % M" y* C* y! Q2 Y, S) Y. w: A8 N: e + ?, A3 c) s2 }, k9 m2 I8 o) Y
hr = m_pDisp->GetIDsOfNames (! \5 l9 M/ y! O# w$ K
IID_NULL, // reserved- g, s! M2 ^( ?& W7 P3 l9 k
&Name, // Array of names to get IDs for " i9 S1 ~7 j& S 1, // # of names in the array4 R, ]4 H& |1 R4 j1 Z. {; p) @
LOCALE_SYSTEM_DEFAULT, // System locale & y: K* c( _2 V" W& y5 c. D' R3 Y, [ &pokeID); // Array of IDs to fill on output + x! x. o1 B3 T3 ^) ~( ?" N - `2 g n0 K/ V1 [* _* B7 }# t
if (hr) y' d5 k3 i8 j1 [# l; y6 b {: `; I8 c% E2 C$ a8 u$ O' `1 V( C% P% |
MessageBox ("Get Poke Unsuccessful"); : V6 g4 |. j9 `5 w, U8 n4 g. Z return; . d4 e0 [6 B9 O/ W }8 `: s+ d$ M7 n9 L
9 d; E, [- O6 R( ~9 j7 I/**************************传递数据给extend**************************************/* U8 J5 t, f( o6 j, j
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);" J% s& [& B. G" q) ^) _
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valueStr = SysAllocString((WCHAR *) L"1232"); + a4 L, H% r. {& p; r8 Z V/ a VariantInit(&pokeVariant[0]); $ E, q4 }/ u3 Q1 B- W+ S* j pokeVariant[0].vt = VT_BSTR; 0 I3 s& ?5 o0 ` f3 f pokeVariant[0].bstrVal = valueStr; ( e# F& }6 D! {8 X5 y: Q# e# _, o ~6 y- ~# A) z
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); - g6 x, b/ U; C7 G VariantInit(&pokeVariant[1]); ' H" [+ U/ h+ X) P pokeVariant[1].vt = VT_BSTR; ( `8 S# t" g" c1 B' G; y* t8 W pokeVariant[1].bstrVal = itemStr; 3 g* z; @/ D/ n6 I+ d: t5 ?5 E2 P3 s0 |* g% |7 H4 X8 E+ T) \
topicStr = SysAllocString((WCHAR *) L"system"); * _ d' C8 j8 E VariantInit(&pokeVariant[2]); 9 h" x& V! S; l
pokeVariant[2].vt = VT_BSTR;% b @3 W0 ]2 a! |- S: @- g
pokeVariant[2].bstrVal = topicStr;# I1 b) s e$ [; t# v( K
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// Set the DISPPARAMS structure that holds the variant. : o) ]# |% D+ Q$ M M. f" n" A5 `) X) [8 h$ n7 V- \* a9 E: O
dp.rgvarg = pokeVariant;2 o: o# L% J4 j) R1 |' R
dp.cArgs = 3; $ l( X, J5 G d+ Z U. b6 T1 e dp.rgdispidNamedArgs = NULL; 5 {) a1 d6 V' i! |- p: B dp.cNamedArgs = 0;7 j M& H$ _, Q) R' G! A
" a, L) L& R1 f7 V5 G1 ^' i
// Call IDispatch::Invoke() ( I3 ?# e' l( s2 o: L# {: b) }$ p$ G8 y( A* Y
hr = m_pDisp->Invoke(0 d( [$ N5 r; J; h) Y9 g" G& q' x
pokeID,' e" x' r0 G- a' q: c# b
IID_NULL,/ i$ b5 l0 Z! N U
LOCALE_SYSTEM_DEFAULT, , W) z" G9 C$ ^7 d" ^8 L* Q" t DISPATCH_METHOD, 0 N! p6 t, V1 q, U/ Y3 M &dp, ! M+ q: x2 c& p' ~; K" C- d; w* j NULL, 0 P1 o q! S, z# E &ei, & e1 {1 k" Y$ }- u# P( B &uiErr);% n4 b# r5 L) V5 e# E+ k! f) J
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SysFreeString(topicStr);$ o) H# W" j( B+ l7 F
SysFreeString(itemStr);! H% U( j% L5 `4 H5 `8 A
SysFreeString(valueStr); 1 @5 {* T! x5 ], I 9 S7 j5 ]' ~. ^- n4 P. \8 j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？？？ . ?; Z: n* M4 b' I* K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？？？？: ?+ T& D% u, u% ^4 o
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2.这是request的程序6 x i& [ z! U
// Request a value from Extend$ p8 Q s/ d; R% `
//( j$ R5 }9 {/ b. l- |+ b$ {
// Initialize the variant that will hold the BSTR. Set the variant's ( r& t* a8 Q( L+ Z1 H! `# _# |// type flag to indicate the fact that this variant holds a BSTR. Place the4 \ g1 p( q7 p6 ^: k" i, G
// BSTR into the variant structure. 2 ~( m( G- y3 p" O5 b+ Z9 y) \+ s# m" S
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);# \8 r6 G; G0 C9 c H$ L8 e
6 h# Q5 s) |) Z% W itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 5 `, m9 B' D6 A$ F# v0 V' t6 R T! X VariantInit(&requestVariant[0]); 1 Z" S8 o: a' h$ t( i
requestVariant[0].vt = VT_BSTR; * r0 Z( u7 {$ x4 P5 t5 r+ P$ d requestVariant[0].bstrVal = itemStr; $ O7 y+ y$ C- d4 o% d+ F . d5 D l- E) \% R5 H' V& J topicStr = SysAllocString((WCHAR *) L"system"); . A3 s6 B7 s( ?% i0 U5 v4 m1 p VariantInit(&requestVariant[1]); . u8 U0 B* o6 f4 R
requestVariant[1].vt = VT_BSTR;* b9 L; r6 ~* }! a1 K
requestVariant[1].bstrVal = topicStr; 4 ~9 }$ l4 B- _! ~4 o! b0 U5 \* M# j7 b2 d5 T! \) \" j8 h# @
// Set the DISPPARAMS structure that holds the variant. 2 D/ J2 y+ b" p. V- l) c! K% G8 l# V
dp2.rgvarg = requestVariant; 4 y3 Z G5 g! A; G2 h4 `( j$ l Q dp2.cArgs = 2;# L/ [( {5 g. y
dp2.rgdispidNamedArgs = NULL; 1 d1 Y1 x- A" n! g) m s( s dp2.cNamedArgs = 0; 4 `. T5 A0 ]2 s! u( Z) T1 [8 ^# ^% Z1 S
var.vt = VT_EMPTY; 1 P: Y! F, D8 J$ F* L0 l; D' M4 u/ Z5 Z6 i+ v& e! Z: o# t
// Call IDispatch::Invoke()' A- _* A: Z- m6 Z5 R1 W! _$ T, G; |
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hr = m_pDisp->Invoke(7 O1 ^2 @, S0 [8 t% I# M# K
requestID,0 z2 C- Q& A# B& z0 a
IID_NULL,; u* H7 H, T% F
LOCALE_SYSTEM_DEFAULT, ' N9 c+ `, Y9 Y2 y5 M1 M DISPATCH_METHOD,: y; x) i" o/ Z1 O+ q2 o7 M5 ?
&dp2,3 e6 L# L1 l+ P6 P q
&var,5 b: |5 X4 j/ O. h7 W% M
&ei, " g0 A- [- H$ n" g' h5 j+ E6 J &uiErr); . Q3 ~* g' Z" `5 F 7 T1 R- o$ t) q5 J7 J! X SysFreeString(topicStr); : e, V2 t& d9 {3 `0 f SysFreeString(itemStr); ! M8 o; Y6 P) g% u6 D( n' W' w请问该程序是获得extend里面的哪个值？ ! B, d/ {1 }& e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
