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: d8 N5 V0 ^4 N: w$ f& D2 OName = (WCHAR *) L"Poke"; 8 \5 ~) Y* O4 M$ C5 o( q; x7 N# @ 9 X: D4 x) s! P- P/ J hr = m_pDisp->GetIDsOfNames (" J2 y+ o* a( [
IID_NULL, // reserved % H8 r0 ?/ v6 }( N F1 b& t3 g, f &Name, // Array of names to get IDs for & c- Z( _0 d( u+ b4 ` 1, // # of names in the array * r) ?: ?. S% H9 H+ j) T LOCALE_SYSTEM_DEFAULT, // System locale0 j9 N& G F5 M5 `8 j9 }0 Z
&pokeID); // Array of IDs to fill on output " a* ~7 f+ a1 E+ P$ ^" O" y" X 4 U; m( w8 F e. a( L3 `
if (hr) 9 R" T& z/ R, L) w. {2 Q* a { 8 k2 a* I" C* B# F8 v MessageBox ("Get Poke Unsuccessful"); & t7 u( D+ X% j" j5 j return;8 s1 b' g4 D5 N$ x5 f9 {$ b+ l: t
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/**************************传递数据给extend**************************************/ % m; d# N" ~$ E$ h8 h/ H# t% a A" z pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ! h0 o5 f2 O$ X |- H8 Z& o 3 z4 p2 o2 S# T4 d' t: h- T k/ S valueStr = SysAllocString((WCHAR *) L"1232"); ( V8 }( n- a; D& z* V; i VariantInit(&pokeVariant[0]); + L+ x. w! P! R' n: P0 s* d
pokeVariant[0].vt = VT_BSTR;" K: X# D+ g8 J7 Y% r2 D0 g
pokeVariant[0].bstrVal = valueStr;2 R: M6 b( S: j9 r. E% l3 z* i2 i
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");5 K2 k- R; F+ t" c; c
VariantInit(&pokeVariant[1]); 7 V7 z) B. r/ d- B$ J pokeVariant[1].vt = VT_BSTR; 1 W) P: z9 h; y6 c7 p. b! z. H pokeVariant[1].bstrVal = itemStr; " c5 @: G2 b! g- D, a. ] f& _4 U* D! e, ~$ K' Q$ \ topicStr = SysAllocString((WCHAR *) L"system");; H+ b* n! k- l4 l1 }' [
VariantInit(&pokeVariant[2]); 3 x) H3 c+ a/ H# a1 ?
pokeVariant[2].vt = VT_BSTR; 2 M8 x) x! z/ y9 V% c- V1 P8 j pokeVariant[2].bstrVal = topicStr; Y9 f% S/ J1 U" ^2 B
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// Set the DISPPARAMS structure that holds the variant.* f# v! l2 K$ {: `+ {8 X
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dp.rgvarg = pokeVariant;/ |. Y/ y3 @# [/ b* G# A# c1 E
dp.cArgs = 3; ' o' E. s" [7 ` dp.rgdispidNamedArgs = NULL; * R! b7 E; Q0 ^ W: ` |( h/ l& K, S dp.cNamedArgs = 0;( z! o2 K, Z# d2 {& Y
% t( m, n' e8 k& A// Call IDispatch::Invoke() ) _( [( y) {% d" b / E0 ` e+ g* N hr = m_pDisp->Invoke( 1 p6 n# [- Q1 u/ \" w% P pokeID,5 x8 |0 X# A( b) n& s" u# q( O; z: k
IID_NULL," ^; g3 |: ^! a2 V, h4 W) x
LOCALE_SYSTEM_DEFAULT,6 @. R/ T/ X6 y5 L
DISPATCH_METHOD, 5 e! e/ ?9 r% A& c/ e* L &dp,8 |* y3 P8 Z2 C9 C. l0 e( v0 j4 k
NULL,% J1 S& J0 ?4 f( [8 ^ \9 d5 ~
&ei,1 f- x5 K% R- d" M# k
&uiErr);2 M' }: u; d* {: ~( S" m2 R
2 q# L, m8 M$ t! A. K SysFreeString(topicStr);2 G5 Y6 c& a7 E! ?% d& @
SysFreeString(itemStr); ' [+ j3 _- E, _: l9 Y SysFreeString(valueStr); : M$ F' s# O2 z5 h4 t ' s8 u4 Y. \5 e) Y7 [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???& H, `) g0 v2 s' } L7 ]8 e/ 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???? 5 D$ Z. i* N2 O. h" x6 d5 w( G2 j; c
2 _4 {* B) C5 r. V- l2.这是request的程序: [- @! d% e" J* p: Y. _# v
// Request a value from Extend b8 y8 B8 y. n// X" n, ^8 Q' ?* Q9 Z3 u// Initialize the variant that will hold the BSTR. Set the variant's+ ?# ?: U' P, V, ^
// type flag to indicate the fact that this variant holds a BSTR. Place the & _% e8 k& l- N9 K/ S3 F// BSTR into the variant structure.8 K# }+ `6 P7 t" [3 ?
' |" e: |; e6 l; P requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);5 L- h" N+ n: z
( N, Q k# G4 ?+ [$ J( K( ^# X7 y itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); * w9 W$ h: k+ t& C9 {3 h VariantInit(&requestVariant[0]); 1 J8 `* S C5 \6 r$ N( Z' x requestVariant[0].vt = VT_BSTR; ( m) t5 K3 X4 F, T, | requestVariant[0].bstrVal = itemStr; . {" y! T6 S* K! r) H/ G& g( R: ~- n+ y- H8 }+ b3 b
topicStr = SysAllocString((WCHAR *) L"system"); 8 n+ Q; A3 i: _ VariantInit(&requestVariant[1]); 6 `" f. b+ C4 f4 e t requestVariant[1].vt = VT_BSTR; ; s) Y- Y% Y% D4 m# J& s requestVariant[1].bstrVal = topicStr;4 e/ R& }/ X4 u: ^6 G) T
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// Set the DISPPARAMS structure that holds the variant.6 }: I# x7 e7 ^8 {
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dp2.rgvarg = requestVariant;( a" x* D$ D- o. r+ i2 {% k% U l
dp2.cArgs = 2; ' W5 X1 h% H9 g! ^ dp2.rgdispidNamedArgs = NULL;' E9 c- J) R7 g$ ~$ x- T
dp2.cNamedArgs = 0; ! q6 ^9 N& k4 |. v% B* Q7 l+ U6 M" g' [. K7 ~1 h1 g, X
var.vt = VT_EMPTY;% |0 K6 T& W; H6 v' C: c
4 u3 B% n8 W* M7 P. [$ A7 |/ I5 `// Call IDispatch::Invoke()" f) a$ Z, N) K+ u, P
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hr = m_pDisp->Invoke(; M' g8 M8 U* S; G$ k
requestID,/ v/ W& a0 n( M1 n, K! K
IID_NULL,! Y$ ?8 E1 `: K: R6 V; o
LOCALE_SYSTEM_DEFAULT,- W, X, b- \3 u1 \; p1 o3 y
DISPATCH_METHOD,4 f/ Q; |9 N5 A$ P( O9 @
&dp2,. V, @1 T+ ~% A- x4 n) {8 m
&var, 7 k3 y& Q! O* |+ ? &ei,1 S! Y! Q v& F6 v. L7 o
&uiErr); & ~, B" P# ]6 e- o" n& Q * u; M. I y5 L! i0 ?- F SysFreeString(topicStr); ! r3 T9 @: g0 B8 \7 B) y1 \ SysFreeString(itemStr); % d+ \) x; ~5 Z7 T请问该程序是获得extend里面的哪个值?0 G1 D3 T" m2 D- c
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????