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: 9 m, |; C. |, I5 CName = (WCHAR *) L"Poke";9 _+ n! A2 b; V \! f
5 @( Z( ^0 I9 z; }) g hr = m_pDisp->GetIDsOfNames ( ! H$ Y( U% s% E' C6 Z z IID_NULL, // reserved 3 F: l5 Q# ^2 v4 ]0 m6 \5 i &Name, // Array of names to get IDs for 3 t( ` S+ [6 r* E* h* t 1, // # of names in the array; e5 M" f+ a* f7 ~1 Z" r# N, [1 ], q
LOCALE_SYSTEM_DEFAULT, // System locale4 U; n$ d' d8 `8 B
&pokeID); // Array of IDs to fill on output ) f! @4 W7 m: I& e+ U; B# L; j $ W9 k( `9 f# ] P" | if (hr) 2 I" |( ]- G$ {' A: D! x M/ h. K { % K. t' u; M3 | MessageBox ("Get Poke Unsuccessful");5 N$ b8 n# D1 Y0 F( z( ~, e& l4 G
return;; ?2 I, F( L" K, z: c! t; q9 g0 {
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4 j V& ~# Q3 l0 P8 @3 T" d/**************************传递数据给extend**************************************/8 ^' M9 t" Z1 s# F2 G! E d
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ; a( r& {* N$ o6 a4 {, H " _, q5 _# q( p+ m' K
valueStr = SysAllocString((WCHAR *) L"1232"); 2 F6 U0 ~1 V; ^7 ]: n5 l7 Z VariantInit(&pokeVariant[0]); ! M6 ^2 m2 N: P% \6 V
pokeVariant[0].vt = VT_BSTR; 2 r& t$ K8 L' ~ pokeVariant[0].bstrVal = valueStr;5 Z* a7 |8 ^( N% h' M! J
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 2 F2 H, M4 v5 F/ q8 `, @ VariantInit(&pokeVariant[1]); 5 v& F( j- @" ?7 \& q& |4 f pokeVariant[1].vt = VT_BSTR;& W ?5 q) }# t8 ]" E4 M
pokeVariant[1].bstrVal = itemStr;& i) p; l8 t+ T
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topicStr = SysAllocString((WCHAR *) L"system"); & h& v: [% |* [ VariantInit(&pokeVariant[2]); - M! I! z$ B" e& c# S0 b
pokeVariant[2].vt = VT_BSTR; / q9 R& N7 Q. U5 T pokeVariant[2].bstrVal = topicStr; o; g+ e" _7 W) M- h d + N- C$ @6 S0 Y- T5 {// Set the DISPPARAMS structure that holds the variant.6 x. Q& p, W: t+ h+ Y4 K
+ |. M2 `2 Y7 [6 f! p% h2 O9 C dp.rgvarg = pokeVariant; # } x3 C# C4 X F& g dp.cArgs = 3;" u l6 l- J( a6 E, ^
dp.rgdispidNamedArgs = NULL;% F9 ^5 G+ s0 e- a1 Q
dp.cNamedArgs = 0;- n. |/ [0 q+ V, U9 P. m/ ]
" c" L6 d9 D- L" _6 {
// Call IDispatch::Invoke()& B5 s0 Q0 N/ l' T" R! h
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hr = m_pDisp->Invoke(0 U4 Q3 g/ }$ G* O* p3 i" e
pokeID, 6 v/ w) j/ s" ~8 Z IID_NULL, , w% _* B) x: ~ U LOCALE_SYSTEM_DEFAULT, / ~8 Q1 G% b0 L DISPATCH_METHOD,) F' s0 v& P5 f1 c( P. A
&dp, $ _' P& V" `3 q, g" d: x5 }+ G NULL,( J c8 N( v' m2 N. F/ T
&ei,& l' q+ [2 L$ y, m& `' y) `
&uiErr);& j! P9 z! o; X; A7 C* ^/ K
4 a N' e; D/ M; l1 l \, K
SysFreeString(topicStr);5 y. V6 t' I W2 w% W
SysFreeString(itemStr); - I# `8 V" \ r# }. c4 z& T4 \ o SysFreeString(valueStr); j J& d* ]! s$ j( t+ T' w7 t4 h' U" b3 G7 {6 A
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??? ' _: H1 o( M6 y% e1 r3 ]$ D, |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???? ; F6 |1 H4 z4 Q7 a( u# U; K+ u l; _' f8 D
/ w; A) U7 ] `: L- p2.这是request的程序8 z9 L6 S: [% }1 Q K' V# A7 Z
// Request a value from Extend# d1 p2 I. _) z6 b$ @1 ~0 k- S
// 0 I! W. I) a8 h5 I0 C// Initialize the variant that will hold the BSTR. Set the variant's# J& r$ b- o( H2 _+ e
// type flag to indicate the fact that this variant holds a BSTR. Place the& R1 f! w! P r. G' l" e
// BSTR into the variant structure.+ ^/ u4 V1 J _/ J+ Y
. I# h j1 H. X' ~% E+ u requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);+ u) h d7 O" u& R$ {+ s) |, [7 F
1 q, S& A- C* m6 g# z itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");1 A) X" {: r( j- y5 `
VariantInit(&requestVariant[0]); 9 |3 L6 {0 `. W* N5 s1 U9 c) ~9 b% ^
requestVariant[0].vt = VT_BSTR;8 I7 U" E9 I; _8 p; U: }
requestVariant[0].bstrVal = itemStr; 3 f% C- I( {, Z$ @( u3 O3 ? a/ O! u& H" A8 }, o' F. {
topicStr = SysAllocString((WCHAR *) L"system"); ! L* Z6 U; l, M1 N2 S$ c" g5 P VariantInit(&requestVariant[1]); & k+ T2 x: @$ Y
requestVariant[1].vt = VT_BSTR;5 c& `$ q- H. W% V3 s# N
requestVariant[1].bstrVal = topicStr;9 T' L: w# f) I( e1 Z* l6 H
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// Set the DISPPARAMS structure that holds the variant.2 F! G" e# x. ]( |! ~/ p5 o$ [8 ~
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dp2.rgvarg = requestVariant;, o/ d& j+ Q* a0 S r; O
dp2.cArgs = 2; + ?. {" ?) q9 B% N dp2.rgdispidNamedArgs = NULL;4 a$ j/ W7 }6 c
dp2.cNamedArgs = 0;( s5 i0 ^( d2 b5 d" u: ^
" X) K4 B" O7 r& V5 ] var.vt = VT_EMPTY; 0 v" U: Y6 a' j, s& q& R! z5 s$ v( ^0 J2 j( g) t K- U" B6 W$ M
// Call IDispatch::Invoke()' b. B: \* P1 ]# V: s
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hr = m_pDisp->Invoke(; R6 s3 B$ k6 m4 R+ o P
requestID, : E x5 n0 |% r7 e; E7 ~ IID_NULL,/ F& Y/ Q9 T* `/ N
LOCALE_SYSTEM_DEFAULT,1 A# ~, I8 q) B$ J# F# ^' N$ G1 d
DISPATCH_METHOD, - P* u4 T! N8 Z/ f& l &dp2, % U+ C& D* w# M; _8 t &var, 9 V. }, t2 v) g/ j) ? &ei,- z A- U& b- @* x9 O7 U8 @8 d
&uiErr);5 y1 K4 L# l+ Q8 f
/ y0 ^! h1 L7 j3 i SysFreeString(topicStr);$ w0 ]; T2 H& {" v; @4 q0 K' w4 ]
SysFreeString(itemStr); 0 U" H$ _# }7 z请问该程序是获得extend里面的哪个值?- X0 \, K' \8 T9 g+ \% _5 D8 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????