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： . s. P: @/ T- X) _3 h! s6 rName = (WCHAR *) L"Poke"; 2 A- ]. l" X; a; q0 l1 W" t 4 J& J" U; m K% N( n
hr = m_pDisp->GetIDsOfNames (7 u% w% t! m" [5 ~& ], n/ H
IID_NULL, // reserved+ ]' o& M+ _; x3 |8 k" S
&Name, // Array of names to get IDs for 2 t9 P# r. m5 f 1, // # of names in the array - e S) c- ]4 t LOCALE_SYSTEM_DEFAULT, // System locale * C4 R3 I! S3 c* O+ z9 K; j &pokeID); // Array of IDs to fill on output % _" N3 _7 X' G% Q# \ ; N2 z3 ?- d1 V9 O9 A' B/ N2 P g5 f' i
if (hr)- L* f) L1 T9 O% a) F6 G5 Z' o1 `
{ * ]- ?5 _% t4 v MessageBox ("Get Poke Unsuccessful"); $ |1 u6 L/ |# u6 j- x/ V return; 7 e) v% l1 U# e' X: d1 p! s } 6 H! `+ f' }2 u$ W2 h' J3 d y " b; q8 c5 Z P/**************************传递数据给extend**************************************/ . q; h% H6 R4 p. U9 \# m5 Y# \ pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ' M; k- f, n/ t6 |% R s " {9 Q0 G6 A7 b) W' `$ O valueStr = SysAllocString((WCHAR *) L"1232");! m& N0 k4 I) E6 \8 F. Y
VariantInit(&pokeVariant[0]); 2 h7 C# j7 B& l* x: l
pokeVariant[0].vt = VT_BSTR;% H# t' o. |; e3 l0 P
pokeVariant[0].bstrVal = valueStr; / ~; \' o) S ]% ?$ Q- `$ h5 P$ S6 a7 h7 m
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");% f2 x/ s. S, u5 g$ L0 K
VariantInit(&pokeVariant[1]); : L% [ b2 T( V- b% q6 c0 o; h+ J pokeVariant[1].vt = VT_BSTR;. }! K1 K f: N
pokeVariant[1].bstrVal = itemStr; ) X$ R5 G$ ]7 j ~; @# L+ b! D1 }3 Q: a. E$ ]! u \" G' e
topicStr = SysAllocString((WCHAR *) L"system"); : H# ~: {8 [) Q- I4 B9 m VariantInit(&pokeVariant[2]); $ L+ l( C' x C& f$ U2 F- p3 F pokeVariant[2].vt = VT_BSTR; j+ h8 m3 K3 O: [+ } pokeVariant[2].bstrVal = topicStr;& P; o: r3 Y6 m( o$ ^
1 s: ?$ C; U) a* u% R* d; Z// Set the DISPPARAMS structure that holds the variant. , S z+ J/ S$ f6 M) [9 F0 N) m! e8 \" H6 z f
dp.rgvarg = pokeVariant;$ P/ G: i+ A* q
dp.cArgs = 3; 9 v! g$ f) R _( A7 @8 X8 |7 h dp.rgdispidNamedArgs = NULL;5 N L4 K+ \0 M3 L; }
dp.cNamedArgs = 0;$ K3 U4 U, ?+ v% D( g; f
* g$ m8 {7 y8 p2 d# W
// Call IDispatch::Invoke()- f0 \6 `; W; Y5 c
8 o! F( @5 ]- ^5 { hr = m_pDisp->Invoke() U$ k R0 ?7 C6 E0 k# P
pokeID,* r: K: v$ n3 P, l+ ]7 M2 ~ P4 m1 q0 g
IID_NULL,4 U) @' }" Z. s) U' V/ k( A% z
LOCALE_SYSTEM_DEFAULT,. t1 T: S2 t+ S
DISPATCH_METHOD,+ P- s: j# @' f/ C8 C
&dp,4 w' v7 q" k/ i, V% |, T
NULL, : E. \0 G2 b( u5 x0 Y X &ei,; T6 b6 }& Q; r; d
&uiErr);+ q" |: o; m9 h* b* b& E, t3 E
. J+ T* v! T3 G/ |2 d SysFreeString(topicStr); # N6 n( q' `* J8 e3 X" [- Z SysFreeString(itemStr); 0 k% x3 ~$ v+ S# x SysFreeString(valueStr); 3 }/ B; [" h. y9 |% O2 Y# Q5 C6 R# o2 u! d1 G* l3 _/ E% [
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？？？9 t' _! u8 i. 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？？？？4 M! u8 a/ }+ C$ Z
- g2 c- H' z \$ B9 @0 i
8 H$ q. k0 N/ l1 A1 z8 c! `" t2.这是request的程序 6 e+ T; ~ N- [. y- U// Request a value from Extend ' F3 X( L# Q4 k//- i+ W Z6 i! i/ y' ^4 j& ^
// Initialize the variant that will hold the BSTR. Set the variant's 9 {/ h& K% G0 ?, g$ _. v7 C5 z5 T) p* Y// type flag to indicate the fact that this variant holds a BSTR. Place the0 o( `9 U' @6 x* g* d' f1 H9 M
// BSTR into the variant structure.+ R9 r; F2 `: e: {' T- H
7 m: c: S# }' V. \$ q4 ] requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 7 y; G- I) w2 f- |; g ; Z( j5 R' F$ ~- w itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");; E4 {8 }. Y! a7 G3 x- ~
VariantInit(&requestVariant[0]); 6 a; |# j( a2 Q" l7 z
requestVariant[0].vt = VT_BSTR;' ~9 D4 ?- G* Q* x! o2 q
requestVariant[0].bstrVal = itemStr;+ D9 i) u* B ]2 g
+ k' F' u: ~; }' L& u
topicStr = SysAllocString((WCHAR *) L"system");' \- X N' c# Q
VariantInit(&requestVariant[1]); 6 W: p6 Q1 Q1 S% K
requestVariant[1].vt = VT_BSTR;! X6 H8 l/ [6 M! P
requestVariant[1].bstrVal = topicStr; ' U3 ^, V- @6 r/ I0 F; N$ e0 Z/ z9 P, }9 c
// Set the DISPPARAMS structure that holds the variant. 9 W' u. f; s" y. u; n# N( M4 e2 g( ^, H, z! u% J# i5 D- Z
dp2.rgvarg = requestVariant;/ F* \# ?+ H# h8 h4 Z0 {9 f' Z
dp2.cArgs = 2;0 M* b6 S, g" o
dp2.rgdispidNamedArgs = NULL;( g- R5 z2 ]( T' {4 }. j1 ?
dp2.cNamedArgs = 0; ; K- B; o5 T. _8 D3 }9 M3 g5 W U3 x7 O
var.vt = VT_EMPTY;+ ]6 Z1 n0 D, S3 y" Z3 g+ d) L, Y
1 o7 q, e1 o$ t, A$ X4 b: ]0 _
// Call IDispatch::Invoke()' ?( B( b1 a/ ^: Q# W
f) M k$ ~4 ^& E2 B% a0 u hr = m_pDisp->Invoke( , Z3 a& c& q5 O8 U: T! h+ u1 o' V requestID, 1 m- A5 v1 e3 M5 ]) v* [7 D IID_NULL,3 S2 q1 ^. G- [3 a+ i8 z
LOCALE_SYSTEM_DEFAULT, 4 u$ B% o; A. t# d% U+ c! Z8 u DISPATCH_METHOD, , c1 P( s% N2 w8 R2 A &dp2,8 h" L' @! z% y1 t4 D
&var, ' b" ], _! \* N# k &ei, 7 n. d9 k, e) u2 {" q &uiErr);2 }4 m% T4 e- N
发表于 2008-11-25 19:37:03
