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: / b1 H _# N6 yName = (WCHAR *) L"Poke";; p* T* A- i; t; _/ C
8 ]- x2 M/ f/ K- y) Y) | hr = m_pDisp->GetIDsOfNames ( $ R; y7 g. l9 u( S1 U | IID_NULL, // reserved' W& j' M! [ v% y0 d1 y4 }/ r
&Name, // Array of names to get IDs for# x ^! t5 e7 d) `6 u
1, // # of names in the array ! m5 M" x. s9 d% h LOCALE_SYSTEM_DEFAULT, // System locale 8 X) v/ G' e/ d- D8 q &pokeID); // Array of IDs to fill on output 6 v3 d+ }6 w. @ h' M8 ^. q; B 6 c$ e2 K# w5 e- b: o; B
if (hr) ' u! }) b9 n) A$ }: e$ L { ' ~$ Y# U; ~" Q MessageBox ("Get Poke Unsuccessful"); ( U$ z3 K. A6 L9 X' X return;+ J- Q9 [/ T# W0 p
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/**************************传递数据给extend**************************************/; o- P3 z& L1 B3 m& e8 [
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); - q+ Q4 b, N U" P' L; k4 h 5 K' S: {& S8 B8 @7 f, u1 G* p
valueStr = SysAllocString((WCHAR *) L"1232");9 Y; v8 l! h" d8 a$ ]
VariantInit(&pokeVariant[0]); / }! c5 q9 e" E3 q) Y) m pokeVariant[0].vt = VT_BSTR; X$ |# ` O! O0 s6 u
pokeVariant[0].bstrVal = valueStr; ( K, ?7 o l5 C% H U. y , M0 E/ }7 Y! L9 t2 x* X itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");7 N A6 H! a( x- ]: `$ p3 [& g! p
VariantInit(&pokeVariant[1]); 0 i' z% V B k6 E) U
pokeVariant[1].vt = VT_BSTR; ) z* d8 b- o% |& _5 K0 l+ I pokeVariant[1].bstrVal = itemStr;; T! \, ]- X- {, |5 J
4 V1 C! y f) w. t& m topicStr = SysAllocString((WCHAR *) L"system");% A0 ^& N3 j% J2 i
VariantInit(&pokeVariant[2]); # T5 L Y, b' d% E" x pokeVariant[2].vt = VT_BSTR; 0 t4 a" A1 V) f" w6 L E0 L pokeVariant[2].bstrVal = topicStr;/ l* ^: y1 u% U6 `
( ]& N3 {; n( v& }3 P// Set the DISPPARAMS structure that holds the variant. 3 R7 ]- T- T3 `5 N' N O 0 L1 T! j( k2 B) _* m1 k% Q( @: r dp.rgvarg = pokeVariant; + h0 e P+ Q& E' D' v2 [6 { dp.cArgs = 3;1 T8 L% c9 m, G* j
dp.rgdispidNamedArgs = NULL; $ |7 o0 [% \- Z dp.cNamedArgs = 0; ]( q6 n; b; Q9 y( F1 C + o% z9 i* G4 d8 X0 W0 E K// Call IDispatch::Invoke() # ^ S5 T& c. j* B 1 J5 }$ u: X2 y) U# X/ K2 F) ` hr = m_pDisp->Invoke( & n9 H. f) ]# }. A7 J pokeID, ) |. n' o: l- i1 j% i1 s, d IID_NULL, [) i& Z. W9 M* X4 D
LOCALE_SYSTEM_DEFAULT, : g/ y7 e& O" ?( d4 j" K- k DISPATCH_METHOD, 4 m% C6 U2 t7 \5 p6 n9 f; q7 X &dp,: [* B2 D. |( y8 k! L$ b
NULL,. y5 T# I1 t7 Z6 y- {' M0 w- j
&ei, 7 d; T. r/ a3 y" l &uiErr); 6 c5 [& G7 |% ]% m& S; j, ?2 T! b: _) x2 L, C
SysFreeString(topicStr);1 F. t& a5 K* ~/ z4 B
SysFreeString(itemStr);4 t! |$ z# Y5 J3 l6 P- |
SysFreeString(valueStr); 8 i* B: V7 k( G" e- R: b) B5 r . @2 q: R6 ~) f1 `( ]! p( p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??? / i+ D7 O0 n; t8 ?+ g- ?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????2 y9 \1 }9 r' o# v% n. M
. v& }2 r; o& s( n" C 0 I: m4 l1 ?( S; G1 u( X/ s2.这是request的程序 5 i) Q" O/ J5 D! F+ t// Request a value from Extend ; _; n; `+ _6 J5 ?// 7 B% x' e# E, u3 V// Initialize the variant that will hold the BSTR. Set the variant's : k( h' e+ {' U* S2 K+ ]// type flag to indicate the fact that this variant holds a BSTR. Place the + N1 l0 N) r2 i- b9 g# u" b& |" ?% S! e// BSTR into the variant structure.# n" J; E: Y, H4 d/ n3 P
: @# |+ b) l! S9 S5 {
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ) O; [+ H* D y& T1 B8 ]( m- A 2 L/ _ u, G# V
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! z0 g. p4 u# ~# h# A$ R# A2 S
VariantInit(&requestVariant[0]); " J7 t, G, ?! e* R requestVariant[0].vt = VT_BSTR;% q: Z, m0 B4 z8 Y; r' w: u( @
requestVariant[0].bstrVal = itemStr; , i1 ~ t2 G0 W/ w5 [( o * S: {2 N6 }, k1 K topicStr = SysAllocString((WCHAR *) L"system"); * a$ X p- p; X% X" h VariantInit(&requestVariant[1]); 5 Q9 ~' z2 s* g% S/ `& \ requestVariant[1].vt = VT_BSTR;. s7 B! Z/ j5 A- G) Z( J. G
requestVariant[1].bstrVal = topicStr; . h! z9 ^3 u3 R ! o9 B. [* J9 M' o- E! r v' I// Set the DISPPARAMS structure that holds the variant.) y5 `2 p9 m/ c" x3 n- C! E4 }
7 D% X4 ~# P" O: G$ w dp2.rgvarg = requestVariant; - \7 B% k4 X( f$ O dp2.cArgs = 2;+ |. V J3 \6 g! n7 {, R
dp2.rgdispidNamedArgs = NULL;; X; P- D6 U6 h
dp2.cNamedArgs = 0;. s3 o& j9 i* J, H
+ O1 |) e1 w1 v l1 K* \ var.vt = VT_EMPTY;* R. c$ D; b% q
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// Call IDispatch::Invoke() # s/ a! I' U: p * g% F6 ?8 A' E7 l' X' l hr = m_pDisp->Invoke( $ O; H2 U; f; T) X) c requestID, |$ R* z4 }! z+ w' N" |5 F4 ]
IID_NULL,+ k; |3 d; i4 z7 G7 `9 l/ B
LOCALE_SYSTEM_DEFAULT, ( k3 [5 l A# j1 G% d9 x DISPATCH_METHOD,' M* G: Z1 \$ a' p ^& \$ O
&dp2, J* Q, h5 Z" Z1 T5 q+ t; Q% ?
&var,) D. U0 c( X- O. _1 v
&ei,9 A5 z, i+ T0 _
&uiErr); # I. X1 u/ L$ T$ }3 R+ F& I0 c( K [: M0 b. u4 @
SysFreeString(topicStr); ' i' y: G) U# t# D5 d6 S6 D x: h6 y SysFreeString(itemStr);0 g2 p1 V( X2 G3 t" S
请问该程序是获得extend里面的哪个值?# q, L/ J& H) U# O+ X
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????