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: z7 P) H0 l# R, V9 {( i! F
Name = (WCHAR *) L"Poke"; , w# d, w. Q/ x+ U1 Z " e* F/ ~ N& v' Z
hr = m_pDisp->GetIDsOfNames (* V+ a. u) @. }. u7 l" D# D
IID_NULL, // reserved/ H2 f4 H0 t ^8 u- m6 O
&Name, // Array of names to get IDs for, r+ ]5 c6 x' Q( m& F; I# M, @
1, // # of names in the array1 ~& e( h; K5 G9 Z7 u3 A7 A: T
LOCALE_SYSTEM_DEFAULT, // System locale3 k% \, ]4 ]+ T' `4 U; Y y4 H$ }1 I- a& n
&pokeID); // Array of IDs to fill on output * W, X$ o" H/ O/ s( \1 i+ u 7 |' m( P- k: R8 C$ G5 C. h* f if (hr) 9 z" X8 i; O4 N2 t% L {5 g& [9 u( x: F8 H
MessageBox ("Get Poke Unsuccessful");" k6 q) C' y# q3 y9 p
return;1 P3 R8 r) C0 z& _- t( P$ u% F
} 1 e8 B$ u5 ^1 n& Z 8 f& V: ~. e X3 a" M- \ w% N/**************************传递数据给extend**************************************/6 H) `% j' z+ m
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);1 [ a, E4 s; h
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valueStr = SysAllocString((WCHAR *) L"1232");" _% ]/ K: Q1 x( ~; X8 C; ]
VariantInit(&pokeVariant[0]); $ D7 Q: Q- t: H; p( g; r9 f
pokeVariant[0].vt = VT_BSTR; 1 k# _6 M; `6 m* |' V& k* R pokeVariant[0].bstrVal = valueStr; : i. G# M7 Y8 }. c9 O# p9 F1 Y7 A K8 c
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");( T) `; t' {. H' y, s
VariantInit(&pokeVariant[1]); 3 x6 |( u- Z, A. Y pokeVariant[1].vt = VT_BSTR;0 Z$ }4 }3 q U' J, v
pokeVariant[1].bstrVal = itemStr; 7 d- C1 d6 ?- ~. D6 V5 @. S & b9 n( M+ v% k0 P* G& {/ ]9 B! D topicStr = SysAllocString((WCHAR *) L"system"); g2 }2 ]2 G3 m7 x8 M/ T: u VariantInit(&pokeVariant[2]); / U7 I0 ~* M) z$ V/ a, I pokeVariant[2].vt = VT_BSTR; 1 N, X: n, u9 q. ], B+ F pokeVariant[2].bstrVal = topicStr; : p5 R6 h' u$ Y4 r+ R ; t/ ^) ]* Q- _+ w" B: |// Set the DISPPARAMS structure that holds the variant.5 g2 W! O6 k7 e0 A0 {) t
5 O; D3 z0 Z$ e dp.rgvarg = pokeVariant; j+ f) X3 S2 k7 e: t' a
dp.cArgs = 3; , F5 z8 n- d# c0 a# f6 | dp.rgdispidNamedArgs = NULL; " H- B( B5 \" _: B- T dp.cNamedArgs = 0; 7 H- S& V8 P) n7 c( f4 _1 }" F2 D+ R W' Q( E# Q
// Call IDispatch::Invoke() , |3 O. R& K/ D% v0 }1 H6 o3 t% I$ J, }6 a
hr = m_pDisp->Invoke(6 S- b( y! Z5 y: |
pokeID, 1 @. v8 j5 @: K' Y IID_NULL, ) X) z7 v+ X9 H LOCALE_SYSTEM_DEFAULT, " h' ~6 Z+ i7 | DISPATCH_METHOD,/ s; s1 _5 U7 M3 h2 F
&dp,, y( l% a( [/ o- @, h) i7 u8 i
NULL,: n6 W- v. z; q }8 H
&ei,! ~' N8 i% ~' p& _9 t
&uiErr); 5 m. O$ f+ `8 u: E3 v 1 @9 i8 W. c- }4 d. \- _ F5 f4 _ SysFreeString(topicStr); ) D! n0 v! p* N0 {# ^ SysFreeString(itemStr);. V1 I2 ]5 y& P
SysFreeString(valueStr); ' r& _$ E8 r/ M . b7 G/ @9 k D4 R0 M7 t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???/ a5 c/ L1 X' M/ f" v
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????! h: H8 U! }& b
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2.这是request的程序 % `, j; [, F7 A9 C; \, y& p0 }+ |// Request a value from Extend' H! o; [4 @5 [+ H6 O8 m
//8 R/ b/ m) Y Z5 H
// Initialize the variant that will hold the BSTR. Set the variant's7 u' y% ?2 B7 _; A% }4 n) \$ A
// type flag to indicate the fact that this variant holds a BSTR. Place the ) i. y+ Z7 S! ~! s/ |, b3 \! R// BSTR into the variant structure.5 e/ |" E7 B! _" b+ P4 q, w6 z2 |6 ?
" u, e# T1 R% W# q3 u5 Z( J# h requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 1 D- x4 J8 H! b: S* D% R& q. L ; w; ~- a) p7 i5 Q0 G6 M6 ? itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ! U3 b# s; j- O VariantInit(&requestVariant[0]); % j( V K4 W# n# l- J6 Y" T requestVariant[0].vt = VT_BSTR;/ s! p6 g2 g7 A
requestVariant[0].bstrVal = itemStr; ; @: e; G {$ A 9 |& `% e m/ R7 Q7 P! y topicStr = SysAllocString((WCHAR *) L"system"); ' ~! D9 M; x7 o. Y5 [ F! @1 T VariantInit(&requestVariant[1]); 2 ^6 [4 F5 Q. ~9 n4 z requestVariant[1].vt = VT_BSTR;, w, t! _ Y3 j
requestVariant[1].bstrVal = topicStr;% _9 ]* M4 R% C8 ]% c; J* ?
; e* E; r: C- O// Set the DISPPARAMS structure that holds the variant. % W l5 c* Y# K; W3 V5 c. M; T, `- g* v
dp2.rgvarg = requestVariant; + v9 F* q1 g) b, G k0 ] dp2.cArgs = 2;. ? |- p" f1 h7 N1 q" D4 S
dp2.rgdispidNamedArgs = NULL; ' \' f: c1 |9 {1 v% |1 o dp2.cNamedArgs = 0;" A/ f/ a- t- v
; o9 H, q, p1 j$ I var.vt = VT_EMPTY;3 q$ h+ y8 @; F- p% X. L
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// Call IDispatch::Invoke() ( U1 _- @% g. k" V! h8 h 9 i8 h, \+ X; K6 X8 |. C+ Y1 n hr = m_pDisp->Invoke(# I9 X6 i% h# B: `& ?
requestID, # X/ p' U* Q: P+ o& X. u0 b IID_NULL, 5 H8 v( u& z! m1 B, ?0 \ LOCALE_SYSTEM_DEFAULT,% |- b! ]. H8 k' J+ F! q Q; a
DISPATCH_METHOD, ' N9 D0 [: a y5 i &dp2,7 r' t- b# {+ H6 i! [5 ]" q, Q
&var,; G$ S0 B2 s# f
&ei, 4 ^+ P" R$ ^5 U2 h- L/ K& v; T &uiErr);2 F2 O1 W- e3 @5 a s2 _3 [8 K