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: $ j: u; G; t: _4 A" qName = (WCHAR *) L"Poke"; $ A4 V0 a& t% l y8 M5 t 6 r( Y* e5 n7 x! g hr = m_pDisp->GetIDsOfNames ( * m* F. {/ W" V2 f IID_NULL, // reserved : L+ \+ A! v+ z &Name, // Array of names to get IDs for 9 O1 Y, ?9 u8 G0 u% G- f 1, // # of names in the array 4 }" J0 a: e9 h$ f* g, U LOCALE_SYSTEM_DEFAULT, // System locale" m' Q) P* O5 f
&pokeID); // Array of IDs to fill on output * r6 _2 z" t6 a) E! k 9 [7 f+ r5 Y$ X; G6 `
if (hr) - k3 e: {) G" Y; s3 k7 V ?/ Q$ K { ) c1 a7 Q9 T1 K `4 m0 {; j MessageBox ("Get Poke Unsuccessful"); # M" s l8 j+ m9 a6 H! G return; 3 X' a3 q0 A3 d1 m } / j" w! s1 S3 ~' J' E4 D& Z; R% f7 ~7 z& d- @. {& R9 l7 h0 p8 [: R& P
/**************************传递数据给extend**************************************/ 1 c6 w8 @- E# T8 H1 D/ X pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);( m2 H% I: ]2 W+ M8 }3 F; n* A: Z
$ [/ ^/ g H4 v+ V1 w valueStr = SysAllocString((WCHAR *) L"1232");2 a2 M3 k1 \% [9 }% _/ ^% f
VariantInit(&pokeVariant[0]); 2 L' _5 g! V8 m' F" X pokeVariant[0].vt = VT_BSTR;0 U5 Z: t1 I" x& f& ^: ?" ~# L
pokeVariant[0].bstrVal = valueStr;$ ^; c7 q" A* V3 o
0 W6 l8 e9 v- C( F' {1 m! {- U* _4 G itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! `* U5 `4 G* B2 j& l. P
VariantInit(&pokeVariant[1]); ) m3 c; Z, a ^$ U$ ~6 p+ V' I pokeVariant[1].vt = VT_BSTR; 3 d8 j: F7 J, G' I) p8 d; c pokeVariant[1].bstrVal = itemStr; . {2 h: h: @$ f& c0 Q k : X& D! K% c$ Z7 {! ?8 d" [' ? topicStr = SysAllocString((WCHAR *) L"system"); * ~8 D4 O6 m1 i. ?, |0 A* _ V$ q" O VariantInit(&pokeVariant[2]); 7 P8 V, z8 g, \, v$ L( V7 q. t
pokeVariant[2].vt = VT_BSTR; + Y+ p- y3 a8 l9 ^ pokeVariant[2].bstrVal = topicStr; 9 P; z9 C K/ B3 Z# F3 B8 {- C$ Y$ x6 s" X" q( X! v9 R" a
// Set the DISPPARAMS structure that holds the variant. & t: j0 ?5 K/ h/ \7 h) | 2 p2 u o0 Y T4 u4 w& Z dp.rgvarg = pokeVariant;% @- q! Z: u' q. C4 f$ I
dp.cArgs = 3;: U# m# O, @& h5 M; t
dp.rgdispidNamedArgs = NULL;- t Q$ s5 Q P4 b; h# K- {/ X; n- g
dp.cNamedArgs = 0;/ U% M+ ~7 f1 k# Z
- `. X! Z1 N1 P* n7 f7 g8 q
// Call IDispatch::Invoke() 8 N8 T; R. I/ D - Y6 @" f2 K! L2 y, S2 D1 T hr = m_pDisp->Invoke(( r: j# {( _. G$ D1 A% t
pokeID, % f! |( d8 k0 p) t5 g IID_NULL,( f7 i& Z4 H0 X# e! i. W) U0 m. t
LOCALE_SYSTEM_DEFAULT, 7 `. J! W3 ]1 [9 S* y1 N DISPATCH_METHOD, 7 [: w0 l/ x6 M &dp, & j* k' h; |- q" `% Z; i" K ?/ a/ p NULL,+ a% ?% ^0 Q- B
&ei,! c( b3 i6 a. K k3 c. u
&uiErr); " g' M3 c8 @& `; F2 N- a% ^3 z ' ]7 z+ Q4 N9 }8 l. Q, [ SysFreeString(topicStr);: i5 s0 ]+ y+ J
SysFreeString(itemStr); ( |0 X1 n8 j: w. j9 k, H SysFreeString(valueStr);( p# v# Q6 }4 |( M3 x
0 T H7 V, P/ `- z5 r" B8 `" T
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???& q! d1 I5 Z5 _9 ?' Z
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???? - z+ t; i k3 V! z' ]! s Y% t% V: J1 ^ j3 ~5 N
. R- c. S3 s# c0 I, ?2.这是request的程序 ! @5 D; V" [( a9 \+ x3 Z& N- y// Request a value from Extend) d+ S( V( }3 W/ Y* o0 {* s
// / i- w9 k' d5 g" O// Initialize the variant that will hold the BSTR. Set the variant's . z9 ~" X) V) z- O* g+ T// type flag to indicate the fact that this variant holds a BSTR. Place the - n$ [3 }4 T: `+ @5 x0 z, D// BSTR into the variant structure. ; L& Y3 y7 V8 L5 [2 R" D6 }! y( Y% V
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ' I! R& S0 A8 j8 n # ^7 Z# U& C5 E3 X+ W" C& \ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");9 q* K6 d8 Z0 ]' R! ?: @3 ]' g
VariantInit(&requestVariant[0]); 4 t% r3 O6 `- R, N) h0 \' X# ~ requestVariant[0].vt = VT_BSTR; ) u$ E- ]8 u Y z8 Y- u& ^ requestVariant[0].bstrVal = itemStr;9 R" L* [. M8 E$ i
( p2 @0 p+ u% f6 |# w
topicStr = SysAllocString((WCHAR *) L"system"); / \5 P8 B# _: @' {0 _ VariantInit(&requestVariant[1]); ; _6 V6 p- p* A# E& y" ~ requestVariant[1].vt = VT_BSTR;' u$ _6 C: t2 Z; k
requestVariant[1].bstrVal = topicStr; I0 q" q: B% K' J - H- n9 H k5 }" Q// Set the DISPPARAMS structure that holds the variant.4 p4 R' Q \: j$ p
- z9 G. N) t4 z dp2.rgvarg = requestVariant; / O4 K: A' n* k dp2.cArgs = 2; 6 x: L, B% c9 r( Y* R- t a dp2.rgdispidNamedArgs = NULL;7 Y9 g* a3 l7 ~% b* m! P
dp2.cNamedArgs = 0;' z! D2 M x; p/ y
. l9 l% b! y+ p! ]( a
var.vt = VT_EMPTY; , @" t$ x& j8 R+ {* {; E 0 B9 Z/ G$ S. R$ d& ]// Call IDispatch::Invoke()- E8 O% e9 r' w9 y5 e5 F& k
6 d7 w( m3 n' E# J0 z+ Q hr = m_pDisp->Invoke( . G9 `) `; f2 }. b. S requestID,- U- B) V& M" Z, s" X
IID_NULL, " y" U! _+ k0 R LOCALE_SYSTEM_DEFAULT, ; i) h1 @- K, `9 i" p0 j DISPATCH_METHOD, 0 X1 N2 \. R% p" v) h &dp2,) H- o9 f2 H/ P, |7 r
&var, % w2 t: h' B! t6 z4 K &ei,# h2 b: R0 Q3 F" Z) B5 _
&uiErr);$ x) S1 F- i! X8 n9 ]+ w: ~
2 _; \$ K/ ^' ], y SysFreeString(topicStr);6 Z7 a. i" S) W
SysFreeString(itemStr);- H3 A, y$ [! x! E4 N
请问该程序是获得extend里面的哪个值?5 U0 S& y4 T" p( m
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????