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：) z: b& {+ x& Q! t2 j$ N
Name = (WCHAR *) L"Poke";# t+ n. r3 \1 p$ _9 y
1 {9 l; n& K( W5 p4 F9 z; o hr = m_pDisp->GetIDsOfNames (; Y2 M0 A+ C& [" m) R
IID_NULL, // reserved$ i7 C& n+ d! T8 f) S# ~
&Name, // Array of names to get IDs for 2 r* [ o7 q: {( \ 1, // # of names in the array; \) m8 m* x4 ]( \! `9 B0 o
LOCALE_SYSTEM_DEFAULT, // System locale& s. z6 v2 i: I9 _; A5 z& v2 M: A
&pokeID); // Array of IDs to fill on output, H1 _7 Y* U4 S8 U; o' _/ s
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if (hr)6 q/ q6 z Q& o) ?% @$ V
{ 4 f% c' L2 Z( y. G ^ MessageBox ("Get Poke Unsuccessful");' @6 z9 C0 g- ?# c6 n
return;4 [/ V) y( M7 J
} / B. Z$ z! ~. H1 m+ c9 R 9 z( x! y% O$ B4 i+ P" A- ^/**************************传递数据给extend**************************************/* }6 w/ I7 ?2 u# m4 ~
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);* }- [" v/ M: U$ S5 c& V0 G9 ^5 M7 y
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valueStr = SysAllocString((WCHAR *) L"1232");* o- ]$ N1 q2 b$ b
VariantInit(&pokeVariant[0]); 0 y# W! B& h3 s0 Q) v pokeVariant[0].vt = VT_BSTR;. Z+ [+ L6 O- d% x4 H9 x9 @
pokeVariant[0].bstrVal = valueStr; ( @1 n) b$ P9 }& |( E, R * h% W9 P& J9 H/ @ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); , x2 s9 p9 t+ @( j# Z VariantInit(&pokeVariant[1]); % L. D9 s0 i9 W- N
pokeVariant[1].vt = VT_BSTR;" K& ^/ r/ p- p
pokeVariant[1].bstrVal = itemStr;8 u" ]: }8 |! \' A3 g
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topicStr = SysAllocString((WCHAR *) L"system"); % }9 _% g$ \; l' t2 Y VariantInit(&pokeVariant[2]); * B: D, \3 @1 T& j& D! h
pokeVariant[2].vt = VT_BSTR; : O! u; I; }: {, P4 ~; ~& h pokeVariant[2].bstrVal = topicStr; & o% ^" u/ M: d5 V( R4 M 4 p I( A) }! o! V% h// Set the DISPPARAMS structure that holds the variant.3 ]( _) B& T4 \+ I$ F5 x; x. @
( p+ R+ b7 \9 S Z dp.rgvarg = pokeVariant; ! d' d9 l! e' k' U# U dp.cArgs = 3; # N/ `0 V1 n3 [1 P dp.rgdispidNamedArgs = NULL;, q' o; d1 l, Z
dp.cNamedArgs = 0;) u6 ]2 E/ N' a
% ~6 K8 U- H, ?2 J: Y// Call IDispatch::Invoke() 1 w3 F W# c( h( P 1 Q) f$ h9 k! @$ b2 |5 ] hr = m_pDisp->Invoke( $ e" I0 s1 I' I( s( x pokeID, # r$ v. G% U' H' S8 b2 D6 |0 m IID_NULL, 6 I" z5 A# _ I0 K' ~$ n- _3 B LOCALE_SYSTEM_DEFAULT,; F+ T2 W, v% I* t. |& r$ z* x
DISPATCH_METHOD,: ~( v$ W! J6 [: i8 M
&dp, 8 a( @/ { p; a( [$ J) p; I7 l! e NULL, * _9 k: S x" p2 x4 _0 {) O2 N &ei,0 E6 s" A3 x* P( H
&uiErr);1 k' j% s- n* H# a$ j: H2 @
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SysFreeString(topicStr); ; P9 G. K) O7 z( f8 u SysFreeString(itemStr); ( M# G- E8 i P" H8 M% B SysFreeString(valueStr); . ?* @5 G; L- |% x# b4 L' n1 T% {3 s# r
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？？？3 o& O5 Z, O" t4 j, E: 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？？？？* w( y5 Y5 Q4 S H
* v) |/ \6 ?, g , e# o! E w% e& i2.这是request的程序 ' L7 p+ W8 f3 E3 _3 q// Request a value from Extend 5 t) @- f! @+ j7 S// / {7 J! a1 P" C// Initialize the variant that will hold the BSTR. Set the variant's 7 W, d. ^$ l, f! `& a. j// type flag to indicate the fact that this variant holds a BSTR. Place the" e, |$ l' h/ H1 j9 T2 c8 d4 `# C
// BSTR into the variant structure.2 Z, W' J3 U1 K/ J! M" ]4 w2 q9 i8 R# Z, S
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); , y, T' I( k* Q' L, f) \+ _ 2 ] k! e" @1 P
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");, H% G5 H% |2 P: @, X9 n1 m W
VariantInit(&requestVariant[0]); 5 E; N, u' Q* v# o
requestVariant[0].vt = VT_BSTR;2 Q, K# x. E+ E( G
requestVariant[0].bstrVal = itemStr; ' j0 R0 z& I \( A5 m& O" w9 h1 f, m
topicStr = SysAllocString((WCHAR *) L"system"); ' G. A( W; t, Z, m# S VariantInit(&requestVariant[1]); 5 _; F4 b$ K! h; j" e
requestVariant[1].vt = VT_BSTR; ( }* ^" |" K' Z, D& e requestVariant[1].bstrVal = topicStr; 2 v) [0 _4 `9 M0 {/ T0 z/ ?- b( |3 F* \8 E; B) Y% L5 F
// Set the DISPPARAMS structure that holds the variant. . P( j b5 l- H# q! g . J% b% F" t1 r/ |. K' v dp2.rgvarg = requestVariant; 8 i* ^0 O' k( [9 b& \9 i dp2.cArgs = 2;2 \! t" ~2 E/ o- M6 b8 p% z
dp2.rgdispidNamedArgs = NULL;0 i+ C5 }7 r m& d' p ~0 t
dp2.cNamedArgs = 0; ( F- Y1 e& m* q0 G( w7 S9 A# [8 W B3 D+ ~) Y" _/ B, k
var.vt = VT_EMPTY;, w! ^% f) P3 ^& T4 I
) ]) k: Y& O, |( }, v9 b// Call IDispatch::Invoke() % d+ d* c& F# g) q$ {" `" C0 t8 B* _* r
hr = m_pDisp->Invoke(% \1 e3 v7 ]% h7 _3 {7 h! N, I
requestID,3 J9 h" I4 g+ _% m
IID_NULL,4 a1 V0 v; J* X! g5 i
LOCALE_SYSTEM_DEFAULT, , o4 z8 Y; ?! l% i- ~* E DISPATCH_METHOD,9 J, j% h+ @ ]. [5 I
&dp2, 0 o2 l# v6 C5 {: M. O &var, ; @+ Z, Z Q' I: P3 P &ei,' ?" B; N& {) u1 S5 I
&uiErr);! V% B9 z/ ]) W1 i
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SysFreeString(topicStr); # p: y. v- s3 t# Q SysFreeString(itemStr);- {) A3 _, O, ?* Y* o
请问该程序是获得extend里面的哪个值？6 F g: G& B& R
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
