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： ! i- R. A8 Y' I( ?' X0 xName = (WCHAR *) L"Poke"; ) b6 i: V1 [8 o8 w# Q3 ? O! b) r9 o( h7 R- |* G hr = m_pDisp->GetIDsOfNames (& ~7 v6 q& e6 C8 c
IID_NULL, // reserved ! A% o, u: j: o/ Z5 v &Name, // Array of names to get IDs for4 J! }: T% m5 q: ^" \
1, // # of names in the array, ~+ n. d q* ~: I H
LOCALE_SYSTEM_DEFAULT, // System locale $ \. g1 a) @' ]" c/ o6 C& H& E &pokeID); // Array of IDs to fill on output1 h, z: g8 K d5 L2 S
5 `, ^. j9 a% W8 q if (hr) : h4 Z9 b4 f3 H7 K {! \; ^4 R2 L9 ^4 H
MessageBox ("Get Poke Unsuccessful");: |3 s$ \0 G' h5 c6 t r+ |
return; 4 ^, j" V# u' L5 h4 b s } 5 e- ~* H! o. V7 D# O* x. n( s+ I( ], R
/**************************传递数据给extend**************************************/ ) q$ I: Y& W$ J: i pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); " _* b& [1 _* w7 d% E+ p- A 3 T1 P' g k! G+ g valueStr = SysAllocString((WCHAR *) L"1232");% X9 x" O" H- d; L. a& [/ P
VariantInit(&pokeVariant[0]); * |$ ?$ u1 O% Y2 |6 W
pokeVariant[0].vt = VT_BSTR;0 @1 s3 @9 Z2 K1 @
pokeVariant[0].bstrVal = valueStr;) r/ P9 }9 @/ @# K2 G# i6 v, P
9 I; g/ a. ^( h% U+ b itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");% [9 _( i R" w
VariantInit(&pokeVariant[1]); 4 I7 \/ v9 u2 [3 K pokeVariant[1].vt = VT_BSTR; : W5 x* h# j" |: B pokeVariant[1].bstrVal = itemStr;. m0 a& b& Q* }1 V+ T
/ b1 a" g: z6 b topicStr = SysAllocString((WCHAR *) L"system");2 w& j A0 o1 O3 b7 |+ Y. L9 |
VariantInit(&pokeVariant[2]); ) a1 F" Z5 G: {4 l* H
pokeVariant[2].vt = VT_BSTR;( P" r d: C2 d4 F$ W+ v
pokeVariant[2].bstrVal = topicStr; ) A& P/ X% z0 W# U3 U5 Y+ F6 b8 U" |# T) t# d
// Set the DISPPARAMS structure that holds the variant. , V, I" B+ ^/ i _2 ^7 c' |8 B0 E: _( F: P: O/ k
dp.rgvarg = pokeVariant;# k! t1 _; o4 G0 I
dp.cArgs = 3;5 r U% u! }0 J5 \0 Z# p# c
dp.rgdispidNamedArgs = NULL;) y3 L& f4 a a( k! X9 p+ v4 A
dp.cNamedArgs = 0;) g# ?% p E5 r# D9 B
) w9 [! q n4 L- R// Call IDispatch::Invoke(); W: r- c/ z7 o. R5 v* K
2 Z7 K. m% u7 F hr = m_pDisp->Invoke(2 D: R8 d& i7 @# ]3 M6 I" \" R) I
pokeID, # A0 F5 o8 }% q/ y" z IID_NULL,# h! n7 [ n" K9 O# f( i F
LOCALE_SYSTEM_DEFAULT,2 X4 K7 Z" u$ x
DISPATCH_METHOD,; H, J2 i3 V% d1 R8 c4 C
&dp,% s4 b. X- a7 l
NULL,+ v3 ?& G7 ~0 ~& \ ~. _7 E( X* s" @
&ei,( e# ]$ g/ Z# Y, s
&uiErr); & w4 `5 c* ^; C4 z9 ^, I6 e/ z : d0 [4 |! j" A- I* w SysFreeString(topicStr);" @) q) ]4 Z' L
SysFreeString(itemStr); ; K% W% W" i( Z) y7 x SysFreeString(valueStr); . \+ R4 ^6 M1 w 2 h% X/ I" C Z7 C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？？？/ V5 G, ?7 h# l, {" o' ?, _& m
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？？？？/ g3 q8 z+ a" k# e( g; P
0 _" f( t( C2 b5 B- k& a$ M
& n% z0 Z! k! I/ E4 j
2.这是request的程序 * P7 M) y/ P+ i' h ~// Request a value from Extend 7 E+ l1 K/ d. \. f//( n$ v! t& P* O3 Z
// Initialize the variant that will hold the BSTR. Set the variant's ' W0 X2 j' d9 F, B! P1 ^6 ^8 r4 ]// type flag to indicate the fact that this variant holds a BSTR. Place the + _% M, f& W, n( S8 @% k" c4 s) j// BSTR into the variant structure. 7 D$ [# h% n, w. ^- V+ Y" Z4 d) W0 d- |( o& H7 D$ Z
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); + s8 D% U2 L& v5 Z5 X% Z% f9 d. | 0 b! P4 @, o1 |* ^6 n itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); & H9 Z' Q; Z" a& L VariantInit(&requestVariant[0]); ' H9 P2 x. K; N1 p
requestVariant[0].vt = VT_BSTR; % H- W+ V7 h; S; m$ Q requestVariant[0].bstrVal = itemStr;+ v" u. z7 B; i/ ^& C d( \
& l4 F7 J' L# {6 S, e' Z
topicStr = SysAllocString((WCHAR *) L"system"); 9 e+ L: k2 j# A! {: `: L VariantInit(&requestVariant[1]); ( G |- b9 U6 _; K requestVariant[1].vt = VT_BSTR; * x: f9 ^3 E7 h p1 w5 c% i requestVariant[1].bstrVal = topicStr; 5 S4 L1 }) G6 _ T! U1 T( A" |, b2 N |
// Set the DISPPARAMS structure that holds the variant. # Y/ g# q' m- z$ K% D 6 W; C# _6 T* ~/ Z dp2.rgvarg = requestVariant; - l2 Z- G; U" N7 ] dp2.cArgs = 2; + R3 I+ O4 o0 N8 w |5 m! d3 i dp2.rgdispidNamedArgs = NULL;6 X8 }( Z; i# Q+ w3 I. X
dp2.cNamedArgs = 0; 0 X/ @3 y7 f5 N: G . o7 `+ u. L* J& O8 v" z var.vt = VT_EMPTY;# m3 `$ Q; ^4 Z, [3 ]: A, B' x
/ Z6 [# k' E5 {: i( h3 l0 V9 t( ~* m// Call IDispatch::Invoke() / J' }1 [0 H9 @' q1 u. u$ s7 M: ?$ T; n! m
hr = m_pDisp->Invoke( 1 |$ x, B' W" O4 P, F% J* ~% R requestID,2 r) W9 F, F1 h
IID_NULL,3 Z$ t+ w; @7 | K9 A! X2 L, P
LOCALE_SYSTEM_DEFAULT, . f2 [; Q4 \5 B4 k/ c DISPATCH_METHOD, ( n5 j& i1 O* [9 \ &dp2,( R, V0 L ^- C* Q
&var,- q F. H+ V0 O- ^, D/ h! Q
&ei, ( {9 W U9 P/ _5 M$ B &uiErr); + K4 E9 p' k& s1 M% w8 W* c; I7 d, y n- T
SysFreeString(topicStr);3 o* d$ l8 C, C6 M
SysFreeString(itemStr);( j$ f, {$ ~8 [7 U) |& G" Y0 p
请问该程序是获得extend里面的哪个值？0 O- d/ X/ ?! l2 u
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？？？？
发表于 2008-11-25 19:37:03
