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: 8 D! V0 M. o8 N! m% `/ K _Name = (WCHAR *) L"Poke"; ) W3 v+ L1 u2 g' n* o/ z% ]# U7 G : ]( Z3 l; N: z# D
hr = m_pDisp->GetIDsOfNames ( ' ^- b; [$ j, J; @ IID_NULL, // reserved' c: E7 w7 V8 s" `
&Name, // Array of names to get IDs for 8 `, R( Z- r6 ]3 s 1, // # of names in the array4 i: ]( }* X4 Y8 o8 h1 L# y% e0 A
LOCALE_SYSTEM_DEFAULT, // System locale! v2 @2 [8 y5 ]) E x {
&pokeID); // Array of IDs to fill on output$ x; {5 w1 \; w/ {) i
6 S4 @1 j% \0 z3 r0 A: X0 R) }9 R9 a1 y if (hr)) _8 o1 I, e/ ~3 p; }
{ + @( O1 [' M* Y; \/ G2 [ MessageBox ("Get Poke Unsuccessful"); + ~* w+ `* R$ @ return; 1 F. |( a. P9 U }4 D7 ?2 l. Q( R; m2 Y% V9 B" K
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/**************************传递数据给extend**************************************/ * r) H( N, C- |8 t6 ^- E' [" U pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ! }1 E I9 a* _$ {0 r . u# i q. Z% F6 v
valueStr = SysAllocString((WCHAR *) L"1232"); # R+ K( `4 I" B7 F VariantInit(&pokeVariant[0]); ! p( `1 D- Y% F
pokeVariant[0].vt = VT_BSTR;+ L- S9 V: z$ Y; a
pokeVariant[0].bstrVal = valueStr;* e- x. _: O% v$ f- w
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");' o2 S1 o$ a" o5 m3 d
VariantInit(&pokeVariant[1]); ; L% a( L C2 M h5 ~( O
pokeVariant[1].vt = VT_BSTR;1 l5 A+ N7 m7 q
pokeVariant[1].bstrVal = itemStr; 5 B6 I. d+ L$ g: ?$ h( w" E# S k7 ?, D# C4 W% e7 ^! y
topicStr = SysAllocString((WCHAR *) L"system"); % U" O& z1 ~* [: k7 q' w VariantInit(&pokeVariant[2]); j5 H' b6 I( a+ m2 R9 a
pokeVariant[2].vt = VT_BSTR;9 s) {& n/ T5 l7 e1 d+ M
pokeVariant[2].bstrVal = topicStr;+ K& \( n4 C; z" ?% E0 N
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// Set the DISPPARAMS structure that holds the variant. ) r' G4 B4 V1 Q0 L8 d5 ]5 U: i3 W ; m/ T; Q& | o' l# o/ m# T" ] dp.rgvarg = pokeVariant;! T. B6 X$ T3 I! I
dp.cArgs = 3; ! c' N+ w4 j* h) h4 R# [ dp.rgdispidNamedArgs = NULL; 8 s6 q3 H; s7 e" G4 S dp.cNamedArgs = 0; 8 ^8 Q7 u' G8 z1 L/ Z7 \) K9 b1 F m5 w
// Call IDispatch::Invoke(), }+ ~0 O9 \9 }2 U& H$ X0 @" X
1 | }/ E8 n$ m" {! i0 ` hr = m_pDisp->Invoke( - `( P$ O; v, x- j E' H pokeID,# m3 P" |" V c/ M; H
IID_NULL, ) ^# d. c2 R$ O. Y# ~' { LOCALE_SYSTEM_DEFAULT, 8 C; d, q; k% \& ~$ e# s% q DISPATCH_METHOD, * g1 K. e5 t7 w! x h &dp, i! I6 s' V6 O0 T7 w; a, [ NULL, 2 D& a$ ^% G1 L* E: M- R &ei, " Y/ R% C2 ~* B8 @ &uiErr);2 ]% \5 m `, f. m
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SysFreeString(topicStr);4 b' H6 Q! g" v! ~7 u, I" c
SysFreeString(itemStr); / s$ ] J) G! ^% M SysFreeString(valueStr);- Q" {; D& I# U& Q' V7 C! H4 }
1 E _0 ^+ A o! U9 E! 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???8 H3 R, s$ J9 W6 l
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???? , Z, o; R' D' s" q3 @2 I6 n4 M, `% L
$ p' a7 X3 P* G2.这是request的程序$ i# \- ~0 I. c5 R, q" ]
// Request a value from Extend6 C f$ s' K9 @
// 8 M9 ~; H8 I; X0 T9 `/ \// Initialize the variant that will hold the BSTR. Set the variant's, }" @/ j% P$ i
// type flag to indicate the fact that this variant holds a BSTR. Place the , ]' T; v+ S2 L// BSTR into the variant structure. 5 {9 T4 P, x( B% O 1 R) W, F$ R& Z7 E: j requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);$ X4 `* W6 o7 Y7 n7 U! q8 ^
9 \, f. x& D3 O q itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! G5 L1 C0 ]# Q# e7 [& t
VariantInit(&requestVariant[0]); " o# g. K; |" x* x8 x" l requestVariant[0].vt = VT_BSTR; * ?2 @: x7 Y4 K( Q+ A* ?5 e% |! q& L requestVariant[0].bstrVal = itemStr; 8 v8 r7 V3 I, A. N6 `9 ]" J$ u ( y: B, r3 F, E) }. I topicStr = SysAllocString((WCHAR *) L"system"); & @) e: O2 t, K! n( Q- i VariantInit(&requestVariant[1]); : J; e: E; W( y Z" l8 G requestVariant[1].vt = VT_BSTR;* q0 I7 {3 U2 g: L$ P7 f. a; x
requestVariant[1].bstrVal = topicStr; + w, V! R1 c& R0 W# b8 z, a" ]7 v+ o! i- i" ?/ H
// Set the DISPPARAMS structure that holds the variant./ w+ M( g# n+ U0 K
# i" n i9 l [
dp2.rgvarg = requestVariant; 2 ~7 T. ?* z! u9 S* x/ j* D B dp2.cArgs = 2;7 d& h3 W% S/ q
dp2.rgdispidNamedArgs = NULL; ; F5 Q6 T- M: g, Q( N dp2.cNamedArgs = 0; / [1 f( k8 r! k- c+ N q1 I& }( Q 5 R$ V' X4 ~0 f3 e2 K7 i var.vt = VT_EMPTY;" D, B/ h/ s1 y6 R& m
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// Call IDispatch::Invoke() + z( D: L' J9 q& ] 2 G! k! @, q [# V/ _' o9 h3 X$ _! S hr = m_pDisp->Invoke(6 s/ ]2 n, }9 I# K3 n/ d: H, c
requestID,* G! {* n+ k8 }$ P( [3 l% P
IID_NULL, * e1 ^! B6 f, X" V1 V- g LOCALE_SYSTEM_DEFAULT,$ h0 e' t5 {4 K( s5 N/ O' G3 ~' `" j
DISPATCH_METHOD, t/ @: T! z+ P. H O* E; E) [$ p
&dp2, ' ^* n0 ?! V+ K9 ]% } &var,7 R1 `9 U. j9 h' U k
&ei,, P) O" P2 j5 o9 c% w% C" z+ w
&uiErr); ; S8 t: E! a1 b1 G5 T ! b0 _# S4 d9 V SysFreeString(topicStr); 0 v8 E" t; a& a1 u% b, i/ J SysFreeString(itemStr); % L6 @* h4 y$ p9 X. K请问该程序是获得extend里面的哪个值? $ B- K3 [# k. w; _8 |. o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????