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：; {# D# z- P" a1 w3 o, H& H
Name = (WCHAR *) L"Poke";$ y ~# U+ C7 p/ Y7 E" l/ i
$ p: f1 G7 e, o% e% t6 W hr = m_pDisp->GetIDsOfNames ( 5 Z9 v- a2 w* W3 m2 M- z/ y; _4 F IID_NULL, // reserved) e; [4 J6 R, k! i2 l( m* w% X
&Name, // Array of names to get IDs for 4 Y/ Q- o0 ]6 Z: D) v 1, // # of names in the array: O7 H' O3 Y4 C! j! `! ]
LOCALE_SYSTEM_DEFAULT, // System locale) k, q- v K5 P8 v/ t
&pokeID); // Array of IDs to fill on output 8 ]5 q# C2 w- }4 u/ ?# M ; g r) H! A" v% f4 R. M
if (hr) r& c' N+ ?( s, Q$ `
{ / {0 Z( a4 O( I/ z1 C0 J MessageBox ("Get Poke Unsuccessful"); " g6 a$ G E: H0 Z. H return;' s3 o* z# |" W) u+ S) T
}) | {8 }5 F3 ^3 V
) s( U/ T$ L2 E( g, e/**************************传递数据给extend**************************************/ 7 u$ _' M7 Y$ P( \! I2 G" @ pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);$ W+ n* T9 |7 L& ]! {+ Y6 [5 S& o, p) C
, l6 ^# D2 X5 j* c
valueStr = SysAllocString((WCHAR *) L"1232");( w7 Z" p' w4 v$ @0 V7 T
VariantInit(&pokeVariant[0]); # A$ ~ M" e. ]2 B% S* c9 s% B1 r3 J9 j pokeVariant[0].vt = VT_BSTR;' A. b- N# s6 T! R' u3 n' F J
pokeVariant[0].bstrVal = valueStr;; r, l7 L/ ~$ t- a2 z, d& i* R7 P0 s
, ?! K4 `# H) _* O$ V' t% A itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 1 Y$ C" n5 n4 H. i7 ?8 H5 h( N. b VariantInit(&pokeVariant[1]); 8 w( h+ I' d c: c( {7 K3 t' v! a pokeVariant[1].vt = VT_BSTR; % w$ @0 b: H) c6 @ pokeVariant[1].bstrVal = itemStr;) [ U5 B$ d0 ^& S. Q
- w. W9 e# [3 i# q) S9 `9 B% L topicStr = SysAllocString((WCHAR *) L"system"); / m2 I: `; A3 p7 W" z8 k VariantInit(&pokeVariant[2]); ; W1 {4 d% e; h K3 ]$ W( f- T3 I pokeVariant[2].vt = VT_BSTR; # ~" T; ]* e( i" V4 k' r5 T0 R# D# U pokeVariant[2].bstrVal = topicStr; . s& D4 R. L1 m% @3 E 2 H4 F: A" ~% n( ?* D+ J! u// Set the DISPPARAMS structure that holds the variant. & x8 N8 h4 a% ~ 7 i$ b! Q2 S) F- l" s* s9 E) E* A" C dp.rgvarg = pokeVariant; ! P9 @' i- W# p9 Y9 D+ x% s dp.cArgs = 3;% ?, D0 O% }9 n. n! ?
dp.rgdispidNamedArgs = NULL; 5 H& h* V x) O9 G dp.cNamedArgs = 0;8 v! H* W) J$ Y) o
( Y7 R j) X. @$ o0 S// Call IDispatch::Invoke(). o! A5 B/ g) X* c8 G6 Q2 m
7 q. \! O: j2 S0 x4 e1 [ hr = m_pDisp->Invoke( $ {' W5 ]+ T; a T7 i# b3 a pokeID,) [+ j4 B. U9 _. A) Z
IID_NULL, # }) s( h0 F; }$ S% J2 G) W LOCALE_SYSTEM_DEFAULT,' B6 o2 L( N) q- l7 |' h* j
DISPATCH_METHOD,9 ?5 i3 n- G: u# ^
&dp,1 w( s4 V# y' ]* a
NULL, 1 U5 I- Z) G- V6 y- X &ei, " q) c3 A" z. g0 T/ d/ s- p &uiErr);* i4 m) s) H5 L/ L. `' \8 T
( F/ A0 r& a* k! r. w% r }
SysFreeString(topicStr); 8 F4 P& A, o" B SysFreeString(itemStr); 9 Z7 t( X# @0 z+ Z6 R SysFreeString(valueStr);3 M! ^/ o, g; a- S- {8 n
# T% i& v) D$ G+ o$ w5 }0 c8 C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？？？ , V7 f+ K, X5 C' a& k+ }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？？？？ : C% @/ {% E0 T6 D0 I' Z; U 2 u; |( k. R d% Q# o! ]2 _1 H( `" r M
2.这是request的程序$ L- P2 E3 d0 i( Q6 J$ z# d2 n5 n8 f
// Request a value from Extend / K/ h4 H1 L- I2 i6 n5 L9 i//2 ?" o7 v& [3 ]4 Z6 H5 ?- r2 B
// Initialize the variant that will hold the BSTR. Set the variant's 9 T: n( J! q9 f+ v' I G2 g// type flag to indicate the fact that this variant holds a BSTR. Place the + U/ b1 @% S O. S* [- @5 j// BSTR into the variant structure." j1 u8 T4 r, y- e( L& C8 H
% d) q7 o5 b. I$ h requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);" `. [- A$ r+ n% h4 @& C
# W, I# ?8 J' \4 K. g* g1 B
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! b& L m9 _. g* L* b
VariantInit(&requestVariant[0]); 8 O# }% ]* u- V$ ?* p; Z
requestVariant[0].vt = VT_BSTR;; P& W# Q+ g" ]+ s+ c! \
requestVariant[0].bstrVal = itemStr;0 ^! ^+ s4 c$ l, \( W3 q) d
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topicStr = SysAllocString((WCHAR *) L"system"); & O( z/ z; m7 {1 U* i9 s" C VariantInit(&requestVariant[1]); % G+ @: l n8 w8 ~1 f! m: ?+ \9 |) v requestVariant[1].vt = VT_BSTR;7 ?& a! E3 O1 h, M. u E
requestVariant[1].bstrVal = topicStr; . A9 e% _# ^* ]3 ?: ?5 v8 k) e4 Z+ }8 ?' J% }# `
// Set the DISPPARAMS structure that holds the variant." G9 J+ V( t& I B8 I+ F
+ F1 _0 D5 g3 ?; r$ q
dp2.rgvarg = requestVariant; 9 z$ b( }1 |0 I dp2.cArgs = 2;7 s' }- h" S; \* t
dp2.rgdispidNamedArgs = NULL;6 E- d& }, I4 {0 p0 G0 K% ~' p
dp2.cNamedArgs = 0;* d: V6 @, F* E* Q8 [
3 g% `( K `( r" `3 B5 s- | var.vt = VT_EMPTY;4 C* ]" z7 p: A0 m
( U6 I& T! ~ n, z// Call IDispatch::Invoke() 1 U. Z0 P. D; X- C5 [1 O( p' j, s8 K% e4 S
hr = m_pDisp->Invoke( ; ~# R+ T1 L4 K requestID,$ ~( ^% q* j; \ Q! S$ p
IID_NULL, % H& @7 g8 h0 Z LOCALE_SYSTEM_DEFAULT,& @! a& x6 M# e0 j; h' X' U8 G9 N
DISPATCH_METHOD,. @) [" |, _( s2 U# p _
&dp2,. [; {2 a4 ?0 ?+ z
&var," a- P! U* X" j* P. j$ J& D
&ei,$ A1 }$ [' j; \% n
&uiErr); " E3 F5 }! t* n5 }' D , b* H+ D, B L SysFreeString(topicStr);4 I( T: g7 E7 N
SysFreeString(itemStr);$ C B( Z. Q& x
请问该程序是获得extend里面的哪个值？; D$ l% x; G$ R/ q. M" J
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
