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:7 r6 K+ v A) I- h: Z
Name = (WCHAR *) L"Poke"; 9 p5 [# X4 I+ i% q1 @7 L5 [ 1 M& v: \5 `) h$ R
hr = m_pDisp->GetIDsOfNames ( % R F3 q0 |- L# c! q IID_NULL, // reserved7 e6 U2 x( z7 N
&Name, // Array of names to get IDs for ( M) r. x; p8 U 1, // # of names in the array" e( V0 L5 o, R* v
LOCALE_SYSTEM_DEFAULT, // System locale6 Z) R4 {# s5 \! i2 C4 w
&pokeID); // Array of IDs to fill on output2 S3 u7 W c1 v! ?- d- b
8 K! ~7 g" o: t+ F# C if (hr) - E: K- F0 S8 r/ V4 i8 ~ {6 t7 x/ _4 o- z0 u1 Y
MessageBox ("Get Poke Unsuccessful");, }! [2 v" c. ]0 k6 i {
return; % r5 n2 h0 E7 R& d: ] }) z: c9 }! N$ i) t R) M4 T' ~5 f3 @6 T
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/**************************传递数据给extend**************************************/ , }- l! R4 ^" Y) m; d- c* } pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);' A5 q- n4 s4 U2 G( A
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valueStr = SysAllocString((WCHAR *) L"1232"); " {3 ?( w- q& l( }' S VariantInit(&pokeVariant[0]); 3 H' m( Y: }/ h' t. b, k. A) n pokeVariant[0].vt = VT_BSTR;3 B: I7 Z( p0 q
pokeVariant[0].bstrVal = valueStr;+ o/ k* [* ~+ ]3 M5 V' B. Y. q+ V
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 2 s6 j1 Z8 @ C/ z VariantInit(&pokeVariant[1]); . @+ e9 Z" Y# t0 F# r pokeVariant[1].vt = VT_BSTR; * ~2 |. F4 d( g- i7 @/ i pokeVariant[1].bstrVal = itemStr;+ q4 B, N# o% C2 o4 o! _' B
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topicStr = SysAllocString((WCHAR *) L"system"); 5 j3 e* g0 U+ n- r! S. ^4 u VariantInit(&pokeVariant[2]); 6 C4 V9 T4 Q! Z' ]: P5 f pokeVariant[2].vt = VT_BSTR;: Q4 b' H5 O' @4 M/ a( z
pokeVariant[2].bstrVal = topicStr;, B) k3 q7 Y8 l, g; m0 e+ H5 R4 ~/ L
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// Set the DISPPARAMS structure that holds the variant.$ G W0 {' Z- q6 A* N- O Z
( [0 Y. U- g% `2 n, B7 @ ] dp.rgvarg = pokeVariant; * a. ^# _$ l5 _/ _& k$ V) G: x dp.cArgs = 3; 0 j" w- E$ v/ A3 n# l dp.rgdispidNamedArgs = NULL;, ?. k% `7 `* Z
dp.cNamedArgs = 0; 4 `+ |5 g$ Q) f# e; K4 s( `! G; T( X: U# B6 j, P- S# |
// Call IDispatch::Invoke() + a' k5 {" H, |* [. x * j [8 b9 w! E/ F4 c9 k hr = m_pDisp->Invoke(: J" \8 m' y0 v) H- V. K
pokeID,6 M" b D$ z& l7 z) S* N
IID_NULL, % ]7 R1 H. O4 k! m, d8 o& U! L6 ^ LOCALE_SYSTEM_DEFAULT, 2 [6 c3 c6 I, I8 ^7 O DISPATCH_METHOD,& F" e2 O/ c4 }* u/ P% q$ x, i# d
&dp, # o! q3 n4 d3 h) u5 _9 ] NULL,2 N% `7 c8 ]: X; A
&ei,- A1 s& f, d: c3 f% P" x4 u
&uiErr); $ H0 c1 h4 s9 `1 H: d3 g / J0 g0 h$ m$ ~+ H9 k& w; a' a SysFreeString(topicStr);9 l0 G* K7 \) s; |: L& {% ] I( Y9 \
SysFreeString(itemStr);$ d4 j0 T4 _9 ?8 M5 s, l- U$ P3 z! B
SysFreeString(valueStr); J9 s6 ]# \/ k& L% ~4 [
% v# V/ ^% p9 F b! S8 F: T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???' t$ l' W* }4 X3 r! D5 a6 r7 N
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????) o) Y3 g' k6 \/ @0 ^( A) d% p
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( D6 m4 ]4 \# b2.这是request的程序 - }4 k2 T" ~) T6 [: T [2 w6 j# h// Request a value from Extend0 j2 G& \2 D) U+ |5 ]5 z. I
//5 V$ v' p8 k' C2 q
// Initialize the variant that will hold the BSTR. Set the variant's: i' z, u1 {2 c% M; D. k5 _9 S
// type flag to indicate the fact that this variant holds a BSTR. Place the, |; |) D0 b' e
// BSTR into the variant structure.# F: ~5 c& Q: q/ k. {2 ~2 _
9 Z% i" S# n/ M& N4 k requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ) ^8 H! Z4 S3 ? " w6 Z, T, \4 g; ]5 @1 y% H3 R
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 9 f9 Z3 F, V+ v- T. A9 s6 Y VariantInit(&requestVariant[0]); ' g- V9 p+ y8 Z) q$ S
requestVariant[0].vt = VT_BSTR;$ e4 ^3 P% g1 I1 p
requestVariant[0].bstrVal = itemStr; 8 x. q: s7 a3 X1 d& e; w7 ~' @3 B+ x/ M2 r- l
topicStr = SysAllocString((WCHAR *) L"system"); 4 ^# y( |2 F/ q- e. I6 N; Z& V: V2 s0 I VariantInit(&requestVariant[1]); . k! n& y0 g1 Z9 W$ [ requestVariant[1].vt = VT_BSTR; . o( X$ P. Z4 g+ M' p8 v, c% ~, ]+ f requestVariant[1].bstrVal = topicStr; ! N B O1 f9 |/ w4 E# n- M$ b " d8 d# o. G3 T! `2 D# t' \// Set the DISPPARAMS structure that holds the variant. ) k! j& x3 \( P6 E7 a2 n( G8 n# o0 P! P( @1 b6 n
dp2.rgvarg = requestVariant;3 o5 e+ ]* w$ N0 d) ]
dp2.cArgs = 2;( s7 M6 F- F- ^8 M9 j) S* `
dp2.rgdispidNamedArgs = NULL; 6 l& \% b3 j, L+ v) k C) e dp2.cNamedArgs = 0;4 T( _) D" N3 y
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var.vt = VT_EMPTY; ' K1 z- X+ S1 k2 @2 k5 b% t b7 Q3 f
// Call IDispatch::Invoke() " r/ t/ i" A& P7 f- `2 n 9 k& N) M/ Q4 ~3 j! D0 U! O! _4 t hr = m_pDisp->Invoke( / I- o1 s4 y# g& O0 d requestID,2 u2 V3 c4 b. A. b5 C
IID_NULL, ) A* c% S+ H& J/ @5 R* t- A LOCALE_SYSTEM_DEFAULT, 5 k) c0 q# h4 v. T* Q! J DISPATCH_METHOD,: M9 k% T0 y ]# u- y2 C
&dp2,0 i7 n8 Y+ d2 O* {4 F2 `0 R
&var, ' _% s2 Y& ~/ O &ei,, W+ b. R2 Z9 K" ?2 Q; C
&uiErr);5 b* |% O8 r* }3 W- P/ U* ]; G
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SysFreeString(topicStr); ' b, f" C* V6 k SysFreeString(itemStr); `, { E3 @/ w请问该程序是获得extend里面的哪个值? ( T! K+ N2 B0 t! ?: w5 {9 B4 e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????