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: # W5 _4 {0 c; c9 z9 QName = (WCHAR *) L"Poke";5 J4 ^) [! H6 T a1 m7 ^% o
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hr = m_pDisp->GetIDsOfNames (9 l8 T& E2 j. N2 {8 G
IID_NULL, // reserved* Y A4 @( E+ t0 `
&Name, // Array of names to get IDs for : i9 d' \7 ^4 `- i$ u" d/ z 1, // # of names in the array % L9 K* f4 R3 S; x D LOCALE_SYSTEM_DEFAULT, // System locale! |5 m. x# p# r! G, S
&pokeID); // Array of IDs to fill on output + H @+ U/ }* v2 L / I3 f9 z" f* H$ Y
if (hr)7 f( K5 }: B' ~4 K3 Z
{ 3 E+ ?/ B. i% b8 A" a# F0 J MessageBox ("Get Poke Unsuccessful");6 y$ I B: R! N% I. A% r% R
return;" X! l6 Q* _1 ?+ g: Y" R7 G4 b
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- ]0 }, @: M( n) q, i/**************************传递数据给extend**************************************/( V E T1 b/ B [) y
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 7 ~- i) Q# L+ o 5 D! A3 x# w% D5 Z# H- r valueStr = SysAllocString((WCHAR *) L"1232");: f9 f$ i% L9 p# C0 i! \
VariantInit(&pokeVariant[0]); 2 S9 V& l6 W) T: J% h pokeVariant[0].vt = VT_BSTR;* n" \( K- n) K
pokeVariant[0].bstrVal = valueStr; " R! B5 E6 _% u: b$ E ; N; d& X* k# C! H9 q itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");* u5 [. P( P+ p5 z. q/ k6 |$ ?
VariantInit(&pokeVariant[1]); 0 k. r: Q; }6 q" b! p
pokeVariant[1].vt = VT_BSTR; % O+ {7 F+ G- s2 N pokeVariant[1].bstrVal = itemStr; & t; Z5 d( x: u1 k ; c( j, V% M; o; ^: | topicStr = SysAllocString((WCHAR *) L"system");0 W, b, x" J5 ^; }) }: v
VariantInit(&pokeVariant[2]); 9 b4 y1 i5 |/ @! g2 L pokeVariant[2].vt = VT_BSTR;3 V t4 J! G' [( I' h
pokeVariant[2].bstrVal = topicStr;$ K3 v# W! T1 I% N8 C; o3 e
! m( I+ b* X% q f// Set the DISPPARAMS structure that holds the variant. ' D' V: _; K6 ?/ I, ^# M7 @) O6 ?/ [/ q1 l
dp.rgvarg = pokeVariant; 4 W' x2 Q1 ~* N( L! g dp.cArgs = 3; 3 v2 p" o* y- v# A dp.rgdispidNamedArgs = NULL; 1 q8 Z3 T) a/ P2 O1 J6 w dp.cNamedArgs = 0;# m5 u2 Q/ y( \5 i1 F
; f1 J; b, y4 J' `// Call IDispatch::Invoke()3 W" K g* P* W, ~, b$ H1 Q
0 N' B( d/ Q8 h0 |2 L- i' Z b' V hr = m_pDisp->Invoke( v% o% I+ X3 w' p; e* ]* b- t
pokeID, $ k6 Y: d, ^5 |. F! R' k IID_NULL, # r: T l. ]4 a# i LOCALE_SYSTEM_DEFAULT,3 z2 v8 r) M% Z3 F, {( Q
DISPATCH_METHOD,; h# W$ ` @' v1 X$ V1 f$ \
&dp,5 S( |+ x2 M* |
NULL, $ z" v# s- ^. l &ei, . R9 X" S0 Y. \: H8 v &uiErr); 6 q/ u! ^$ v! |* u" ?; p0 L/ Q9 p% p" p% e% n
SysFreeString(topicStr);! `$ n) M# L4 C
SysFreeString(itemStr); 8 [3 |2 s) V7 `$ i SysFreeString(valueStr);; `* ?7 d; |" e+ C! a
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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???1 @4 @# i4 K( }* w$ 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????* y4 A5 v$ N, O
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2.这是request的程序 7 u6 C6 t" l' s3 L* F; f7 K// Request a value from Extend " \6 c* D/ D% H0 {- F4 z, [% L// 1 N: N, x+ [: j// Initialize the variant that will hold the BSTR. Set the variant's ) ~9 G# Y5 R2 C% w+ @9 `" Q: z e// type flag to indicate the fact that this variant holds a BSTR. Place the( r6 e* T- U4 \ g$ i# X
// BSTR into the variant structure. 5 J) C: `- z8 z, T) b0 ~0 r; j. Q3 c3 H3 g9 ~- o( ~( b/ h
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 5 A+ V4 m. A: k8 o9 _6 g , u. n4 V8 h8 ^2 [
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); W: H1 X% ` d; d
VariantInit(&requestVariant[0]); ( V! Z6 Q% r+ B: ?0 ?! n1 e) Q requestVariant[0].vt = VT_BSTR;$ } [ F' P( Q3 |- _* O
requestVariant[0].bstrVal = itemStr;8 s1 e' a. ^7 c7 S4 H& u
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topicStr = SysAllocString((WCHAR *) L"system");+ h9 Q7 P' S% _* `& f2 H
VariantInit(&requestVariant[1]); + F% m3 s& h* Q- o requestVariant[1].vt = VT_BSTR; 3 ~7 w& }: m" d/ O requestVariant[1].bstrVal = topicStr; ' b. k# u% U5 C3 j4 A5 Y f7 d2 z' ~- i+ u3 c4 E
// Set the DISPPARAMS structure that holds the variant. ) ~. x& L& c* T ! l0 h7 d; \1 e dp2.rgvarg = requestVariant; & m2 z2 \5 o5 [# \9 o dp2.cArgs = 2;1 i3 _) a5 F3 C) i
dp2.rgdispidNamedArgs = NULL; 8 o) }5 V' ~' ~8 w( @$ A S% q dp2.cNamedArgs = 0; ; C1 l/ V7 Q* r 0 u$ m2 o$ {$ o) w: C p S var.vt = VT_EMPTY; - j6 [9 j0 l$ j4 s/ {( ?5 q. m 1 }2 K! q# R1 e+ ^' D" s# U; O// Call IDispatch::Invoke(); P1 R+ Z, M, A" o% B& J# \; K
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hr = m_pDisp->Invoke( . E3 t1 m* o- s8 h/ L/ f, q9 T requestID, 8 H% [" S& z& `6 n9 K' n IID_NULL,5 s& I. z; P4 W& M
LOCALE_SYSTEM_DEFAULT, 0 h. E, R) J+ j( M2 m DISPATCH_METHOD, ' q0 T# t0 @3 u4 d' f! J! m- b &dp2, 0 Q$ g) V% a( |7 o& _5 F& O" U8 k1 A &var, 4 ~# @2 l1 f* I, l2 f6 @# Z &ei,& i, e: Y1 S5 r Z
&uiErr);* d$ T3 w" }. U5 b- {, n2 }
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SysFreeString(topicStr);( w6 P4 {/ m, M" m" g' ]6 H7 c4 K
SysFreeString(itemStr); 9 F+ J b7 x4 j3 F9 F请问该程序是获得extend里面的哪个值? L& H( V/ h# C: F3 E; M; Z, H7 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????