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：1 u. K% M6 n2 K6 {2 s- C1 `
Name = (WCHAR *) L"Poke"; ; T% n+ H0 M# c+ `; Q - ]# p- M" `5 |4 S. J- U hr = m_pDisp->GetIDsOfNames (! x# O+ e$ z. h+ w) O8 ~
IID_NULL, // reserved # \4 K0 p; t3 @+ O &Name, // Array of names to get IDs for/ {$ M( O. X) ~
1, // # of names in the array 6 P$ k2 h( [, q9 E: D9 H, S LOCALE_SYSTEM_DEFAULT, // System locale 9 n0 S l; M2 X3 c$ v) _* N6 L &pokeID); // Array of IDs to fill on output; G7 U1 E/ h2 s) K' X0 E
: v" |2 T+ j$ q if (hr). V% z9 Z/ V! |! O$ e) y
{ 3 Q4 ` P6 \" S P* e) N2 b MessageBox ("Get Poke Unsuccessful"); 8 r- l' s7 r h) F/ ^ return;" X* i# w& y* d0 G: K6 v
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/**************************传递数据给extend**************************************/ - E4 W1 @! C. o; \9 q* B pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 5 k; f1 y* T+ w! G9 \$ K # \; Z+ e! Y( B! \; ], ?8 ~" }
valueStr = SysAllocString((WCHAR *) L"1232");% ^9 y3 M1 ]( A* l& r8 c
VariantInit(&pokeVariant[0]); . E m' t& O$ ~+ i pokeVariant[0].vt = VT_BSTR;: J* M4 ~, |3 Q/ K0 z
pokeVariant[0].bstrVal = valueStr; 0 v6 \5 ]# ]. ^) k4 U + a; K$ U0 P, ^# Y b# j itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");* ]& n6 g2 k0 \7 A: k' `/ m4 X
VariantInit(&pokeVariant[1]); 9 P- n) h: M+ V# P6 x% c
pokeVariant[1].vt = VT_BSTR;4 B- A$ [' W. U6 ?/ w
pokeVariant[1].bstrVal = itemStr;% V0 G% C8 u; v/ |5 s/ }' [" H5 _
! f% ^, Z! e, E4 L9 u% x0 X; I topicStr = SysAllocString((WCHAR *) L"system"); ! g. f6 |) S; h VariantInit(&pokeVariant[2]); 3 ~! {9 s0 H! r- Y1 Q1 v. j/ ~ pokeVariant[2].vt = VT_BSTR;8 r/ Y) s- \% a, e9 A% u0 \
pokeVariant[2].bstrVal = topicStr;/ R4 [# d, ?' ^+ P' J: p* f
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// Set the DISPPARAMS structure that holds the variant. . N& c; x, o5 C8 y1 v( `; X" {
dp.rgvarg = pokeVariant; - @& y3 Z7 y# W6 w/ ~7 _ dp.cArgs = 3;. n3 u6 d. k3 x
dp.rgdispidNamedArgs = NULL;# _7 A+ f" f+ s/ M* O
dp.cNamedArgs = 0;' s( u& }2 y5 g' u5 y* f( M
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// Call IDispatch::Invoke()3 i7 e7 u, ~/ r; Z5 C) r1 |0 a" c
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hr = m_pDisp->Invoke( 1 o5 M: a& U; Z7 r2 S2 M ~ pokeID,7 J/ t( ~) I9 y6 a! h
IID_NULL, X% F* A, O9 E; A# n LOCALE_SYSTEM_DEFAULT, 1 F8 g! e- u% I/ ~3 [ DISPATCH_METHOD, $ F! x0 F3 G) e I. X9 k &dp,& Q0 G$ q+ \8 A6 K' S4 a
NULL, + \: k8 F3 i5 N &ei, ' k) u9 j3 r8 |- r# n' V &uiErr); 1 u' T- h$ n8 j- _- _& t2 G0 s! i- {4 ?8 m
SysFreeString(topicStr); ' Z7 z% i% E( q0 V SysFreeString(itemStr);4 r' T4 [+ i- @5 S* h' U; n
SysFreeString(valueStr);' h& j: O/ u9 `& \) c
, j g% F" h3 |4 U5 R3 ]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？？？7 s3 l: p5 U E7 I
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？？？？ 2 p' q. ^+ B' k0 c4 F% C" x. O( a3 \$ s* _
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2.这是request的程序2 r4 s: X& S% \8 I/ M* N+ t' @
// Request a value from Extend( H& Q; v2 T4 \) N
// + m8 ?. W4 n% y// Initialize the variant that will hold the BSTR. Set the variant's. ]$ S! X; F& s7 m
// type flag to indicate the fact that this variant holds a BSTR. Place the " U' B( a8 m6 Y4 F* H$ k# u// BSTR into the variant structure.4 a6 U7 i% v9 W8 p6 j( U/ H
, z. \, j1 J9 q% j# R+ @ requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); & x/ f% q8 t9 t a* A 3 Z9 @1 r: e8 g: q, n* J0 P itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); , S* \2 Y, _. E" ]. c) w# I9 P; I VariantInit(&requestVariant[0]); 4 U0 ^* |1 U2 s# Z% x N requestVariant[0].vt = VT_BSTR;4 V( e: ~# ^* f! ~# H# k9 X
requestVariant[0].bstrVal = itemStr; 7 ~$ l. w& x8 T- [* Q. o: J3 t' ?6 C' j1 S
topicStr = SysAllocString((WCHAR *) L"system");! X7 O9 B+ {" j% G/ k+ {- O# h( S
VariantInit(&requestVariant[1]); : W, P3 V6 `: @# A9 {" @6 M& t' H requestVariant[1].vt = VT_BSTR; - p0 v; ~4 z; U( T Z requestVariant[1].bstrVal = topicStr;8 b/ \* [2 Y6 P) p
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// Set the DISPPARAMS structure that holds the variant.1 |% r) E* e& @* Q, [7 b
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dp2.rgvarg = requestVariant;( F* M5 F7 D; Z/ B# N
dp2.cArgs = 2; 2 O0 ?! z6 B; S, `+ {- f dp2.rgdispidNamedArgs = NULL;# U1 p/ U' O+ b4 A
dp2.cNamedArgs = 0; ( _! _6 ]& C/ R- f : n6 }0 O: K. o; z var.vt = VT_EMPTY; ) P. x1 R. F8 S9 \' i. i# k* i9 z) R& z5 R+ A
// Call IDispatch::Invoke()& x. u. H$ x6 L5 g+ D
4 r& `& n% O. {7 n hr = m_pDisp->Invoke( * P, b- h! t) p0 q& R9 F2 K requestID," y; o. a1 Z7 J3 B- X) k' R; S: q
IID_NULL,( N: u/ N) | _2 K- I/ w% h
LOCALE_SYSTEM_DEFAULT,$ ]% \' v9 _: I6 y3 C+ @. C3 b
DISPATCH_METHOD,1 R; @' O! ]' l' p5 x. N
&dp2, 4 r _0 T3 _ H &var, 4 b+ @( I: r) f: _5 W. \$ p &ei,; L9 `7 E1 v+ h# Z
&uiErr); . e- s& N9 a6 F; f5 }( i F3 R+ ^2 d- M& A+ u0 ~( C. f
SysFreeString(topicStr);( ~, b( r, O# m8 {
SysFreeString(itemStr);) \. v- U9 t5 z9 f; z% a
请问该程序是获得extend里面的哪个值？ , H6 ?4 O. P& W9 n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
