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: # ] e6 f8 n4 \3 H1 l b DName = (WCHAR *) L"Poke";! h T6 N* d. k
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hr = m_pDisp->GetIDsOfNames ( $ F: D% A, C; M8 h1 p# [ IID_NULL, // reserved9 N' E: g1 ?2 @1 i
&Name, // Array of names to get IDs for% o! x* [/ O' w7 B# v5 J
1, // # of names in the array! O9 ?4 f6 G4 @# E4 b
LOCALE_SYSTEM_DEFAULT, // System locale . q# X; `& J" J: `8 f$ [5 |! Z &pokeID); // Array of IDs to fill on output 2 I6 d* s# Q& ?, A* V ; u9 y9 S2 T- M, i) U
if (hr)2 }! l' f' s- m! W
{ & R6 z. l6 G/ M$ d$ r& _# z MessageBox ("Get Poke Unsuccessful");& P4 g# B4 |9 p# g; w6 a' j
return; : i! t0 t) k, E8 w. j6 b6 o } 5 i2 H3 a/ G$ r* G- U 2 i' I. F L& d# h7 F/**************************传递数据给extend**************************************/ $ L/ f! v0 h1 C% u3 Q pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);; q6 ^: v' K- R8 a( T5 e
, ~ Z0 u1 A9 f1 X valueStr = SysAllocString((WCHAR *) L"1232"); % ]- b, a/ J2 m) D- T1 y VariantInit(&pokeVariant[0]); 0 B& `- R/ I& U0 p" B$ k9 J
pokeVariant[0].vt = VT_BSTR;# c6 L& ~. h5 E- L( }
pokeVariant[0].bstrVal = valueStr;4 s- {; v P& Y+ W% L
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");" P' z7 t4 X& W. l: p" k
VariantInit(&pokeVariant[1]); " o# T/ i5 z, s: W$ F pokeVariant[1].vt = VT_BSTR;/ H# s, @/ \* J
pokeVariant[1].bstrVal = itemStr; 6 ?+ y2 n: ~7 b* ]2 U! Z 7 U$ g" W0 o( J- t4 e topicStr = SysAllocString((WCHAR *) L"system"); k$ L2 q" P1 x" e
VariantInit(&pokeVariant[2]); 2 d6 P. ?5 }; @! j9 c
pokeVariant[2].vt = VT_BSTR; # T8 {8 T3 h/ @, g- i( o* Y pokeVariant[2].bstrVal = topicStr;0 O6 O; a4 }! q) D& q
" G: H2 [3 z4 T9 [* k( ?// Set the DISPPARAMS structure that holds the variant.- }( M* P/ ~+ x
& e5 z3 ]2 k/ M5 }; c. _' R dp.rgvarg = pokeVariant; 1 k1 r0 _" @- D9 U: b7 N dp.cArgs = 3; 4 m% T" o3 a0 q5 S. C) g dp.rgdispidNamedArgs = NULL;. [' r+ S- F, J$ J- `' j& Y
dp.cNamedArgs = 0; / ?# k) a, ~: f3 E% ~" c6 j4 d. B# v+ V
// Call IDispatch::Invoke()1 P, z' \5 W" w( s+ C# h
$ V7 ~9 {; w2 j( T7 } hr = m_pDisp->Invoke( + ]: B4 W$ W0 {) z pokeID,# B: B. f. H( a6 E; k i" o
IID_NULL,1 v6 O3 [. N9 q& _+ q
LOCALE_SYSTEM_DEFAULT, c& ^% E4 {" j
DISPATCH_METHOD, 1 N0 V |9 j' `# T0 K6 E &dp, D; o/ P# X# r) D& f NULL,5 t* `& v$ q) z& T3 `
&ei, / L* X' r. S) a* z: z &uiErr); ) T8 q. @8 @! J6 W5 Q 6 T* I& W/ ~5 r9 x# b/ ?9 D; A& D# C: I SysFreeString(topicStr); : j6 t! X+ m4 I! ?: {% x3 S SysFreeString(itemStr); 4 v1 Y' Y& R; c7 J SysFreeString(valueStr);: Q4 a5 k( ?( f/ u/ p
* l. `* i5 @7 T2 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???2 C* [" `4 R% y8 h" U& l5 B( p. h
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???? * M" M8 k2 t k; y8 R ! _- w: _' m0 w; g' ~& e & \( @5 f) T$ u5 |9 ^/ F2.这是request的程序 % P. V8 y- Z# m5 ]// Request a value from Extend$ e! ^ T" N2 M4 R
//1 U: K4 Z9 v; w7 ?9 A# f N8 ?: T7 G
// Initialize the variant that will hold the BSTR. Set the variant's 0 [7 k( u3 B% V* _5 b, s// type flag to indicate the fact that this variant holds a BSTR. Place the - r/ \( v$ N" }! {3 o6 I// BSTR into the variant structure. & h- E5 Q* E% f/ ~* Y5 w& C/ q" M' F/ k& ?5 Z1 Y4 h( X, s
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);, s( j/ Q' A- W* o6 J9 n: }
! H/ f* ?6 G5 S* Q/ N3 W itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ' ]( y9 {: E; F7 m! o6 s VariantInit(&requestVariant[0]); , X2 d( {" ~2 b0 ]8 G requestVariant[0].vt = VT_BSTR; T6 K# T% P. M; f; C0 l; x6 W
requestVariant[0].bstrVal = itemStr;) E& S* D0 n6 O% j# d$ X
' }8 t/ R! s+ ~. ?& m+ G topicStr = SysAllocString((WCHAR *) L"system"); 0 ?! u" L N; l" l VariantInit(&requestVariant[1]); : }: H0 J+ J! h4 R3 A) g" P _
requestVariant[1].vt = VT_BSTR;2 A9 c# y4 |* k5 q
requestVariant[1].bstrVal = topicStr; : l9 [7 {! x! G( W . i# d; n. r$ }% `' L0 B8 R( V( a// Set the DISPPARAMS structure that holds the variant.: O) W5 O4 F* p7 J
6 }' [8 T4 P! z$ [; \ dp2.rgvarg = requestVariant;5 t( }9 h3 J0 [1 Q; l8 ]
dp2.cArgs = 2;" I7 q# u" v. h. V8 z/ y
dp2.rgdispidNamedArgs = NULL; * }: m/ ]& |6 W5 S dp2.cNamedArgs = 0; : d' q* ^. A0 d3 k$ ]" Y0 d1 B9 }) i% p( `- S
var.vt = VT_EMPTY;3 I$ I8 B3 n0 R1 I
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// Call IDispatch::Invoke() 3 }% a: x$ }6 g" S: } ) P6 L. A# b4 O/ m4 e) k hr = m_pDisp->Invoke( / l" Z! E! O6 I" ^( ]; i3 M requestID,- I0 {4 b" A: G8 O
IID_NULL," O+ L4 e" _/ G9 v2 S0 ]+ c& V
LOCALE_SYSTEM_DEFAULT,: T6 p4 |8 ~! W
DISPATCH_METHOD, * W( _) M/ ~ q* Q &dp2,# |- i+ X( o( K) u' a C
&var, 8 s- W2 j$ ~& ] &ei, 6 Y o# l" }% k5 I( V- S; S4 w &uiErr);& w1 _+ j' G% j F. [$ Y
* H- `& T2 O7 Z SysFreeString(topicStr);' c9 Y" l% a4 u! ]# k' _
SysFreeString(itemStr);3 S, Y F) L) M- q
请问该程序是获得extend里面的哪个值? + t0 H a3 t/ Q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????