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：3 w& n9 S' p: V6 Y' Z4 _+ t- F
Name = (WCHAR *) L"Poke"; 3 d2 y! \2 d7 o+ g& Q4 [+ m " D# K/ |# R7 P9 u$ n
hr = m_pDisp->GetIDsOfNames ( * ^- z. D4 ?3 U IID_NULL, // reserved' r* L: c7 z+ `, T6 f1 }% g
&Name, // Array of names to get IDs for4 T) u7 u/ s1 x% N: i l
1, // # of names in the array1 J1 F3 `+ q& r& A
LOCALE_SYSTEM_DEFAULT, // System locale3 E, d" {/ i3 x7 X; @# ?7 l5 k
&pokeID); // Array of IDs to fill on output 3 D/ J7 |- I7 S& v8 c. S4 o 6 h+ z; U8 Q4 v' M# p if (hr) [9 Z7 F, ~9 R0 Z* F {4 G( _9 x, {! z- V* D- S5 M% o
MessageBox ("Get Poke Unsuccessful");* F1 j* T" N8 Z; @ v4 O. p# Y
return; , C5 k( q. F W. y9 s } 3 |' J6 a! o0 d" f0 h' `& X8 g! [% T- ^* w" O0 x
/**************************传递数据给extend**************************************/ , J$ w- s1 q; h' J: t pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); $ U8 y |6 D+ g) U8 c; n7 o) N3 t6 ` 9 M+ }5 m4 |' K a
valueStr = SysAllocString((WCHAR *) L"1232");/ C: V/ x _' p# } y9 ^/ n1 [1 N3 n
VariantInit(&pokeVariant[0]); 1 d4 P5 Q3 ]! A3 N p pokeVariant[0].vt = VT_BSTR; # ^ S0 E6 c8 _0 v7 d pokeVariant[0].bstrVal = valueStr;6 Q, t1 Z0 y" z; ^; `7 w
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");# u/ }% }8 W2 @: f/ ^& P
VariantInit(&pokeVariant[1]); 6 `7 S, ]. r# g( x9 G/ }3 W: B
pokeVariant[1].vt = VT_BSTR;- ? J2 K( y9 Y. I
pokeVariant[1].bstrVal = itemStr; ( [: B) J$ ?! B6 i% v" Y; |& g$ o+ \- ^& D2 r
topicStr = SysAllocString((WCHAR *) L"system");6 Y; }+ _; l4 d6 F4 c, \; \
VariantInit(&pokeVariant[2]); $ Q2 r: G) l' V, L4 Z! h2 O5 P: o pokeVariant[2].vt = VT_BSTR; 1 F% e, i M. U! D. e. ?1 ] pokeVariant[2].bstrVal = topicStr; , {. x5 q' Q9 G1 k' F( j2 d; V# [ / M9 P) [4 ?# ^// Set the DISPPARAMS structure that holds the variant.5 C8 b3 V' D2 b s
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dp.rgvarg = pokeVariant; ' o' o6 {4 x' Y/ r, g dp.cArgs = 3;" l! A& s% X" @7 I; G
dp.rgdispidNamedArgs = NULL;0 l/ S; m( I- O8 F6 a
dp.cNamedArgs = 0; 5 v6 h/ _! A* q1 H/ g, D: l$ u - x& U# k- {+ ?/ W" ~// Call IDispatch::Invoke()+ s& y! y$ E) f, A3 E2 E6 _' \/ p
2 i! G0 W$ N6 ~; ? hr = m_pDisp->Invoke( 7 z1 O) y. s0 n5 D pokeID, 9 o; ?: n; }9 N4 F" [' s3 f* v IID_NULL, . D% s8 p3 @" z: ^7 n& T! t LOCALE_SYSTEM_DEFAULT, U- a! q& a4 ?
DISPATCH_METHOD, - U) q& Z% R) y1 }" S) { &dp,# A3 p0 L4 H, ^% J9 U: A. b
NULL, : M6 k3 N+ Q% n' J &ei, , z9 O5 Y4 P' @8 w3 g# o &uiErr); # H* v; J( H3 P, d/ r0 X0 q4 \, f$ i3 T6 `
SysFreeString(topicStr); % Y/ b" K- p2 P* d4 h1 S SysFreeString(itemStr); " U/ F% @9 l- }1 J% { U SysFreeString(valueStr); 0 f+ O# F H( b : }/ C) N' ^! {4 O; c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？？？0 w9 o B4 p& U9 I. n
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？？？？& _7 S- _" q: B4 c) Y% v
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2.这是request的程序 " W, R, Q: e* l; W// Request a value from Extend# r* U; h# f' s+ W% _
//1 T! v# {3 q( e9 c2 W
// Initialize the variant that will hold the BSTR. Set the variant's " B* v; |. {! r& B! p, V1 q// type flag to indicate the fact that this variant holds a BSTR. Place the . |/ J- T5 S5 J3 m// BSTR into the variant structure. - o" q0 C4 |: y7 l& e$ R/ m4 _0 @0 t: E( t8 m* W p5 ?
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); . u' P( Z0 m; Y; f) D. ~! F6 w5 c 1 f t& ]+ ~% v5 S
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");6 I8 I# x" w3 h3 ^; x# k
VariantInit(&requestVariant[0]); % m3 v" \ t5 J( u requestVariant[0].vt = VT_BSTR;8 L- M- } K9 G1 G( v
requestVariant[0].bstrVal = itemStr;+ `& O [& `& l9 k" i9 k
9 {2 w- ~6 t: Y3 w; S9 r topicStr = SysAllocString((WCHAR *) L"system"); + I9 O0 ?& J& q6 a5 z" `0 ~ VariantInit(&requestVariant[1]); ; d( z1 N# J8 F2 h4 l" D
requestVariant[1].vt = VT_BSTR; 6 P2 b+ r0 b, S* Y% z requestVariant[1].bstrVal = topicStr; 6 m/ f# [8 t+ y( i) s" K$ c0 k3 p4 Z4 }3 z1 ~6 B
// Set the DISPPARAMS structure that holds the variant. - n- o1 v# _ F$ \8 _9 z( d : ~" o* }8 b' w3 C dp2.rgvarg = requestVariant; * ^6 U9 N0 R1 t! D% n6 I dp2.cArgs = 2;: v' i7 u+ P& d" K5 X
dp2.rgdispidNamedArgs = NULL; 7 r, n+ K( x; g+ {4 o dp2.cNamedArgs = 0;& G$ A6 L6 ~$ z6 G% K X
P" n8 |4 Z& h* k: m
var.vt = VT_EMPTY; / _. v4 J: h" _* c& t 1 x6 }& D. V' {' t V0 l w// Call IDispatch::Invoke()3 X: |5 y* b9 E# L3 n/ F v2 B
! L* O/ s; L/ [ hr = m_pDisp->Invoke( 3 V7 I$ V* N, d0 X' _ requestID," R& U& f9 w! Y) G/ W; w# M
IID_NULL,$ Z7 ?% q4 Z. ?! s* B; G4 R+ M
LOCALE_SYSTEM_DEFAULT,8 W# g d4 m/ v% T- h( ^$ a
DISPATCH_METHOD, , T) r5 b, Q! T7 c &dp2,$ N! K" {! }: h# X3 v
&var,) {1 d" |1 g2 ^1 {1 N' A
&ei, ' O3 y0 r- X+ Z( E0 Z3 [ h &uiErr);1 m+ p) Z' Y, ~: N7 T6 w
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SysFreeString(topicStr);& n* }$ g4 u( y
SysFreeString(itemStr); % O- t5 g. ~4 g8 X8 a: \请问该程序是获得extend里面的哪个值？2 u( A: N7 ]8 |( T% b) 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
