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:! c# L. @- ?! X+ w8 h$ n
Name = (WCHAR *) L"Poke"; , h# }6 @$ x* p0 r % n# S% K4 V. ]# @( h
hr = m_pDisp->GetIDsOfNames ($ E7 n' h. M0 Z* I2 W7 T
IID_NULL, // reserved! J7 f. D: T. D
&Name, // Array of names to get IDs for ( \, n( D5 `: `8 j9 R! O5 @4 N 1, // # of names in the array. C8 y1 c1 A6 e5 `# g9 o
LOCALE_SYSTEM_DEFAULT, // System locale / K7 f# `6 B! P0 }9 A &pokeID); // Array of IDs to fill on output5 a& @: S. ^( v+ i$ m; r$ d
0 Q9 t' f/ c4 w$ Q" P" g if (hr)7 ?: w# A: n4 I+ m, V. c
{$ {7 f' \/ Y/ Z$ u+ H ?' w
MessageBox ("Get Poke Unsuccessful"); / o8 I! I+ `, D5 r& n4 B- ]9 [3 ^% F. O return; 7 I7 b) Z. S1 o/ H, f* h) r: E9 S }" A' l0 M: Z3 m" z* z6 }
9 |( b* N; A) O+ Y
/**************************传递数据给extend**************************************/ 4 I. ?! Q9 S7 @) b pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);3 W% h# l$ p0 G) d. M/ Q
_# R* v9 K4 ~# y+ f
valueStr = SysAllocString((WCHAR *) L"1232"); 1 H6 u! }$ f: B1 c( J) {0 g VariantInit(&pokeVariant[0]); " Z Y: m, `8 w- a5 S
pokeVariant[0].vt = VT_BSTR; ; I, \' u$ ?8 v& u0 { pokeVariant[0].bstrVal = valueStr;! h- N9 [' S2 z4 X8 t; @
( p1 A+ F" J- J: J- f
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");, Z' e. H3 z2 n, Z; Q1 \+ \' ?! r. Z
VariantInit(&pokeVariant[1]); $ B' F7 d5 T- D- c pokeVariant[1].vt = VT_BSTR;; Q2 |: F. |, K* T1 a+ s
pokeVariant[1].bstrVal = itemStr; 7 w1 _; A! m3 h* z- y! q1 A8 I/ o, a# Q+ E
topicStr = SysAllocString((WCHAR *) L"system"); , l0 b/ ]6 h( y& f VariantInit(&pokeVariant[2]); , k: a+ x) G: B S9 h. u+ D% x
pokeVariant[2].vt = VT_BSTR;" i6 K6 n- e: t$ y) R! V' B, x0 v
pokeVariant[2].bstrVal = topicStr; & e0 L. K/ a0 N& U: U 9 ~7 H5 A+ n6 Y# T// Set the DISPPARAMS structure that holds the variant. 6 `- H- }/ B, {- P" k 1 T0 D) G" W+ r r' ?: I dp.rgvarg = pokeVariant;. w' l+ Y, h* x% X0 ^
dp.cArgs = 3;1 s6 O6 ^! J( T$ i8 D
dp.rgdispidNamedArgs = NULL;, q3 Z) E2 A+ [% p- c
dp.cNamedArgs = 0; J$ @: P3 u: b4 I- j$ e % ?& V. i% T, ?. x. t// Call IDispatch::Invoke(). z# ]# a2 ^: L
9 _' t0 F7 t) _- H |3 ^
hr = m_pDisp->Invoke( % K9 v1 O9 I8 T% {* `. h# P) a3 E pokeID, " L: y w5 O4 C5 O: |# O# ^8 W+ I IID_NULL,4 W, y/ b! R% x
LOCALE_SYSTEM_DEFAULT, + \8 V r% ?3 S0 P3 v) \* ] DISPATCH_METHOD,& E- n2 E9 ?- {! |2 f: Z* l1 |
&dp,1 J! x/ n1 f9 _2 N9 v
NULL,' q2 k8 ]) u; T, C/ c& X
&ei,1 s3 ~- ~! F; H' d
&uiErr);% L6 q1 M5 i4 C: i6 D" L5 b
) K: l; @; w) l/ W! d& r' O SysFreeString(topicStr); 8 M* |0 q& u- A% V% S/ U SysFreeString(itemStr);' b! ]( G Q9 u' Z' [9 V6 O# W
SysFreeString(valueStr); ; ~. r- v1 N# F. R1 r/ M% d8 i- ]: r" T2 k6 O
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- u9 n- L4 z& V% J
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 v6 n9 { I* l/ r; y) r$ Q' e. B& h) ^0 B9 U" e. S/ D) r
6 Y0 n4 e6 D" o, H- i2.这是request的程序4 @4 }! X [1 ]
// Request a value from Extend) B1 F2 k/ o; _, r+ k
//. H4 K" F& Q8 M7 J
// Initialize the variant that will hold the BSTR. Set the variant's% c* G# i. Y# H
// type flag to indicate the fact that this variant holds a BSTR. Place the6 N2 T. l& D' z: s: H; y
// BSTR into the variant structure.( o# o/ Z9 n7 g$ c# l0 @( ?/ A
( X. g; w1 n# ~6 k0 Z requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ; r2 ]: ], a% s6 t % E8 L' s! {4 Y) M itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); % g! M2 m% V' G- g0 ^$ y! ^ VariantInit(&requestVariant[0]); 9 z1 `/ `9 |) J* C, l
requestVariant[0].vt = VT_BSTR; # d. g" |2 v, l5 Y$ F requestVariant[0].bstrVal = itemStr; & P! i5 q O+ Z2 H# [ : }" }! Q5 v, q; H6 F topicStr = SysAllocString((WCHAR *) L"system");! x7 C( t& x) l! d' @' U
VariantInit(&requestVariant[1]); / Y) P7 W+ K @8 y5 M. m
requestVariant[1].vt = VT_BSTR; . q* D4 N) w# b9 I+ Q requestVariant[1].bstrVal = topicStr; & n* u. z1 U( U1 G+ D$ f4 K" ?+ t5 _ u& p6 `: y$ \
// Set the DISPPARAMS structure that holds the variant.: |# E, O# Z$ F: D, w$ H; d
5 t6 x7 N9 _1 e! K$ ]8 Y$ S# Z dp2.rgvarg = requestVariant; 5 R- Q( x- n1 L( D dp2.cArgs = 2; ' z+ I; H& \9 a. m8 l% j1 |0 N dp2.rgdispidNamedArgs = NULL; 6 h1 v4 K2 G$ l3 i k4 z+ [, s dp2.cNamedArgs = 0;5 `' T( o3 i) x
" g b& p# @7 g' k6 ]6 [; Z var.vt = VT_EMPTY; 2 @6 s! ^6 {5 f( m3 e0 A9 D- y1 e) E; r( r( l
// Call IDispatch::Invoke() 3 d2 Q' s; l( H/ _8 C+ b% t# u9 V( |; I- x( S* t% K9 x
hr = m_pDisp->Invoke(6 _: X% h& S R7 |2 L( l
requestID, 8 f& N& [, V3 s N" a- Q& u& g IID_NULL, 9 C) v; _/ w3 \1 L" O LOCALE_SYSTEM_DEFAULT,4 o5 g0 ?0 i, j* ]0 g8 v
DISPATCH_METHOD, . d# n) N. a" P9 x &dp2, 6 |5 C" L) G- Y* [! c* A &var, 0 |2 p+ r" p4 ? a &ei, 7 M' D+ i% J8 J& E! s &uiErr);7 y2 D/ [. s: V, r0 `9 @
. b0 }8 l1 c0 Y$ @+ z* \8 W
SysFreeString(topicStr);1 Y0 k3 B9 Z \- U3 y
SysFreeString(itemStr); , U0 B! Q# E! v- O' B请问该程序是获得extend里面的哪个值?$ V3 i S# T& m+ r6 z9 b
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????