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： 6 ~+ P* Q1 L: h7 B6 l" j. x! m' lName = (WCHAR *) L"Poke"; / j: {% x: Z. k9 V + T1 r' q7 g: [9 | hr = m_pDisp->GetIDsOfNames (! Y9 x& r T8 M% O/ M
IID_NULL, // reserved; `; I: _6 @2 \- Q1 c. Z2 S/ @
&Name, // Array of names to get IDs for* }& W* M* z5 y! n# |/ _
1, // # of names in the array8 r# H5 ~- n# T9 {1 T
LOCALE_SYSTEM_DEFAULT, // System locale $ _# ^4 g& c+ W4 w &pokeID); // Array of IDs to fill on output * V4 t. U. C4 ~. s6 O& z " w$ F/ o" b9 D9 c
if (hr). J; _9 k5 L1 y2 M
{3 z% G }9 p A, c
MessageBox ("Get Poke Unsuccessful"); - Q+ O& o# z- v5 K* X- O; B- H, e return;4 X2 ~* }* ?; M0 g1 u# h
} - E9 ~% y2 ~/ ~- c" ~* K+ r" y 4 I; ], Q9 _4 @/ g, E4 Z/**************************传递数据给extend**************************************/$ O! J7 V8 x7 ]
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 1 m; @) S7 g$ b1 P- F1 P3 N: ~ 8 v% z! c+ H0 V, S! h) a
valueStr = SysAllocString((WCHAR *) L"1232"); + F/ N2 f; h& I; p; ?$ Y VariantInit(&pokeVariant[0]); , l" T4 `5 n( ^: B- Q9 x
pokeVariant[0].vt = VT_BSTR;0 J( z. B+ K% w% l) H
pokeVariant[0].bstrVal = valueStr;8 \/ l ^. U+ ~. T% ?) ?; E
- ]6 |3 i* E' \7 Z
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 4 ?. s7 g; Y6 `/ h s# p VariantInit(&pokeVariant[1]); 6 q3 U _5 A+ X) |% m8 E# d pokeVariant[1].vt = VT_BSTR; 0 f3 c. W; K8 f, t pokeVariant[1].bstrVal = itemStr; 0 i7 D; v! T# B2 p2 H l7 \ * T$ G8 p8 Y. R4 D topicStr = SysAllocString((WCHAR *) L"system"); ) u# ~% d7 f- @6 K/ S* f1 I: b VariantInit(&pokeVariant[2]); 1 H& C; ~" R( M! D) C pokeVariant[2].vt = VT_BSTR; % z4 d* h& H7 m, O& ? pokeVariant[2].bstrVal = topicStr; . Z- c/ e1 [2 a+ e$ q; o2 G3 X, i9 c
// Set the DISPPARAMS structure that holds the variant. ' E! u$ O7 G) f7 S& f# ~. b+ B6 a& ~+ H# E8 b k( B! F. D7 L4 g
dp.rgvarg = pokeVariant;; ~ \; V1 r' a8 ^! c
dp.cArgs = 3;: F! p D: J7 A* F2 }
dp.rgdispidNamedArgs = NULL; - G7 G+ I9 s9 J7 |& \( T% h dp.cNamedArgs = 0; ( ]# v) h. H# U8 m, H ! y" f4 O0 Z$ {/ {// Call IDispatch::Invoke() " f* ^# {+ e2 A! P( k / ^# g; z; t u( v hr = m_pDisp->Invoke( : O4 j- ]8 N: Y5 [ pokeID, 6 J% b9 V" M( a IID_NULL,( `, s/ F i9 c
LOCALE_SYSTEM_DEFAULT, 2 i% t& p- R; [; @4 a( @3 } DISPATCH_METHOD, ( W. d% ^) Y$ e0 {1 R# ~ &dp,8 S2 L; a$ J3 I' l$ f" a
NULL,: k+ p. j5 ~& L7 A0 }& {. X7 m
&ei, z% T3 F/ Q `
&uiErr);2 v: p8 C" h* a
3 m8 E. y$ m1 }$ w4 D7 n3 ]& } SysFreeString(topicStr);, }6 e" T1 m( s* D
SysFreeString(itemStr);: q) e! h) r0 ^
SysFreeString(valueStr); 0 c; Y* D/ N+ e + {2 t( ]; F( F+ W+ r& J, k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 O* e4 d3 Q+ v. [2 B) R
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？？？？ - P$ K) q& `% Y9 R4 {2 c 3 Y: |5 i+ K: R/ q8 c / R0 t V/ h2 @9 G, I ?2.这是request的程序* \" H) A- Y. s& Q) Y6 O
// Request a value from Extend 4 I3 a. [( J" V4 n' X// # E8 W( E- Z8 A! @' i' M1 }// Initialize the variant that will hold the BSTR. Set the variant's 8 ~& c* w* F4 n# M; \4 U# l// type flag to indicate the fact that this variant holds a BSTR. Place the2 D- w J z# c# @
// BSTR into the variant structure./ T- Y8 } |4 W+ k
8 \# T" N4 d9 |0 r requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);9 p' E# w/ |9 K9 j
- i( ~! m0 C( d' p; o' _& \/ M' p itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 0 ~2 @& N+ [( G; \( Z. z [ VariantInit(&requestVariant[0]); # y4 U+ G5 Y- v2 r7 m5 a- l requestVariant[0].vt = VT_BSTR; $ K0 J. Y7 y. @ requestVariant[0].bstrVal = itemStr; % D( z0 N! P$ o( k( ? , c5 O2 |' Z/ y' G( @ topicStr = SysAllocString((WCHAR *) L"system"); 9 J/ m7 y( T* t7 T VariantInit(&requestVariant[1]); & H: o2 X. i1 ~; A requestVariant[1].vt = VT_BSTR;' Z# a0 c1 p1 F" }1 N
requestVariant[1].bstrVal = topicStr;- A( t5 o9 X& S8 T0 E/ I
; o# H1 s3 k8 _
// Set the DISPPARAMS structure that holds the variant. 2 J J0 E/ g# ~# b" L% o- l1 t# }& n1 d- D# R" ?
dp2.rgvarg = requestVariant; " u, b& _" O) t) Q. _6 L! }, ~ dp2.cArgs = 2; 6 o( [! g, N& f. l5 t dp2.rgdispidNamedArgs = NULL;) m. H) l% F1 @6 t
dp2.cNamedArgs = 0; " `- ?0 u& H6 i( V2 Z; T6 b0 i- M) A s+ O+ c. w# T" v
var.vt = VT_EMPTY;& E& y8 H2 R# `" H3 L) Z, K
4 g7 R0 p5 u' D/ y# j- J4 [/ D// Call IDispatch::Invoke() % {8 ~$ m- W6 I- W' x' r j0 [/ C# O( J) g O! ~2 w+ m: m
hr = m_pDisp->Invoke( / c) Z# Q, |+ p8 z- e# M) V& w requestID,9 H, H' g8 s1 L4 o( T6 F
IID_NULL, 2 N( R5 t( N5 I" O LOCALE_SYSTEM_DEFAULT, 0 j j' o; ?" P" e& k. B DISPATCH_METHOD, $ R4 K; ?5 A g &dp2, 1 W: d4 b, }5 l7 x0 H9 \7 N &var," Q4 g; Z7 O2 y/ L7 y, @$ D9 V; P
&ei,- n `2 X5 A8 D, k( W5 s0 P
&uiErr);9 h( |6 c/ L L* f/ J; f6 M) F
; `, k5 h& w. G; y SysFreeString(topicStr); 8 L3 r" K @& N9 c6 C SysFreeString(itemStr);) Z2 W V' D0 w! ]
请问该程序是获得extend里面的哪个值？# l2 h, J: N! c
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
