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:6 W& m. d% h0 V& Z' v6 f
Name = (WCHAR *) L"Poke"; , [- g0 @0 |+ o0 o# w7 t$ q$ O 3 s$ o8 x+ Y" L* R- u/ U hr = m_pDisp->GetIDsOfNames () e. m* b& E, Z
IID_NULL, // reserved2 P: e3 Q' k5 ? ^) V
&Name, // Array of names to get IDs for ' E1 o2 m! {( u( M T 1, // # of names in the array2 [$ a, F" I [5 J1 p) \
LOCALE_SYSTEM_DEFAULT, // System locale/ }1 K) H4 T- Q, S( { |# }9 y' \
&pokeID); // Array of IDs to fill on output& ]1 v" x1 ^% a- V+ Y M" a8 K" \
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if (hr)" H' R) C9 T! K1 j" j2 p
{ + Q9 W* f* n% `) ? MessageBox ("Get Poke Unsuccessful"); 1 f* l! |6 }' I, l, N4 i return;/ t0 o- ]; s; q3 ]5 l
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j* z5 k+ O8 m5 x$ ^' h7 a/**************************传递数据给extend**************************************/7 r% B( b6 [& _: n, r- R$ G. a$ k
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);9 [; |7 \& v' k9 e; E
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valueStr = SysAllocString((WCHAR *) L"1232"); + X% H; |9 i- N) D VariantInit(&pokeVariant[0]); 9 `" f7 x. M* s- D* m
pokeVariant[0].vt = VT_BSTR; " O. }3 }7 e ]/ a pokeVariant[0].bstrVal = valueStr;) f. h' E& [& u
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ) ]- B. G8 i8 e7 C/ X' ?7 f9 K VariantInit(&pokeVariant[1]); 3 ]7 S0 ^8 i/ o6 y
pokeVariant[1].vt = VT_BSTR;& M4 ~2 z' x- N& @! |& m* s2 i
pokeVariant[1].bstrVal = itemStr;9 u, a2 h0 T. L( y
- G, C+ d: k/ A$ R# ]( S8 Q; T topicStr = SysAllocString((WCHAR *) L"system"); 3 D9 _& R$ n/ ?; c- ^& M |$ }: e VariantInit(&pokeVariant[2]); " e4 W( U8 p5 y9 x! K pokeVariant[2].vt = VT_BSTR;' C |( ?7 W/ v
pokeVariant[2].bstrVal = topicStr; " _+ G' I5 T0 Y1 v7 c+ `3 Q* S. F+ x9 d7 K& q. e
// Set the DISPPARAMS structure that holds the variant.' K/ R9 U/ e |# J* L6 v$ A# j
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dp.rgvarg = pokeVariant; - A( u, U- ?$ g: p9 h# g4 g. F2 C dp.cArgs = 3; ' s0 ]5 J/ O5 t( L, q dp.rgdispidNamedArgs = NULL;4 g4 D# O7 k& `3 L# O
dp.cNamedArgs = 0;( u: j! J `; k; ^
, i Y' K5 g$ ]
// Call IDispatch::Invoke()4 \0 [$ \; T$ g5 K0 C0 E* V6 _
! q3 b9 T, }0 B2 D% N; h hr = m_pDisp->Invoke( 1 \. ?% J0 E2 n+ x6 T( b' ^ pokeID,$ |& f; }' e* Y$ u2 F* a
IID_NULL,+ ]6 Q, P6 \* E3 F/ B
LOCALE_SYSTEM_DEFAULT,/ Z/ e9 d k# k2 t
DISPATCH_METHOD, 1 P6 u$ c5 G1 r6 _: h0 Q &dp,* g7 |/ ]/ A% q7 j
NULL, 1 a* Z8 ?' e$ ~2 H9 { &ei, : a, B# l: o E6 S &uiErr); 7 E* V0 u. r* L. ] ! ]( j. K& c8 |; ~ SysFreeString(topicStr); 2 {: V2 v1 B4 b D! d! F8 X+ Q SysFreeString(itemStr);' m# O/ w/ J9 V( r+ |+ Y/ R
SysFreeString(valueStr);+ i* B* e1 w3 `
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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???' n( l7 t( w+ [) I8 x8 c8 [
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????5 c' R& D: S; U; _, c& ?/ b
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2.这是request的程序: |/ o+ g- x- d% Q# [$ L
// Request a value from Extend6 ]! I9 B7 C2 R4 y
//! O6 y4 U1 c* I4 g! S( t
// Initialize the variant that will hold the BSTR. Set the variant's ) U) D t" n0 K0 [! y7 b// type flag to indicate the fact that this variant holds a BSTR. Place the1 I& r7 }# ^( h; b" ?
// BSTR into the variant structure.5 L' s" O4 X7 u( @- |( ~; {
+ ]( t6 `. y; W- M% B+ \' q- n& R% N) Y requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);* x* ~2 o7 m9 r1 Y5 q
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");* l" u4 `; O, K* x2 K
VariantInit(&requestVariant[0]); " D6 d" a9 P0 S9 ?* W6 _) U, t
requestVariant[0].vt = VT_BSTR; % _, o4 R' g% t6 Q. K7 G) o' G" e requestVariant[0].bstrVal = itemStr; ) n* a9 p8 B: V+ m; }4 ?2 f3 ]% g3 ^: Q
topicStr = SysAllocString((WCHAR *) L"system");+ ^8 o7 ?. O7 ?, M2 U
VariantInit(&requestVariant[1]); : [1 i8 R$ S* S
requestVariant[1].vt = VT_BSTR;/ n6 Q, d$ y2 [5 o+ K
requestVariant[1].bstrVal = topicStr; + U4 a* k* _# r/ J7 @: E- _! S: I+ b y4 @
// Set the DISPPARAMS structure that holds the variant. , [- F: X! w# {. Z: l W 5 \8 b& j1 W# I9 h5 n- ^+ F& u0 ^ dp2.rgvarg = requestVariant; , i" e3 g1 r2 R: `$ B# E% @ dp2.cArgs = 2; . x7 t5 _% s l7 N9 [" Y5 p dp2.rgdispidNamedArgs = NULL;$ D1 m, E+ t3 N3 |
dp2.cNamedArgs = 0;+ H1 B$ v- L" X7 c
. b. F9 J- t# j5 P8 h; w var.vt = VT_EMPTY; . W7 T \7 L( W 1 C: R! X; p3 k- P5 s7 ^& j5 H// Call IDispatch::Invoke()9 K2 ^. a; o: F$ s0 }2 C
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hr = m_pDisp->Invoke( 5 N8 V# q. j( F K: z6 W requestID,8 n% S+ U/ Q, I; R
IID_NULL,& S: Y/ |! p- V7 m
LOCALE_SYSTEM_DEFAULT,3 h6 ?# z! Y6 j |% m
DISPATCH_METHOD, . {8 w) v; D& t8 Z* k Q# w% o &dp2, 4 y- x, p& T! X* X) P- f &var, : s7 ^2 G* o# w &ei, : f4 j# B% y6 e; m& Y& q3 k &uiErr);3 ~! M$ S0 V4 G: U
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SysFreeString(topicStr);% R5 A) r0 w+ j) V0 e
SysFreeString(itemStr); ) c! C7 Z" {9 [0 a' q请问该程序是获得extend里面的哪个值?* _. C' n+ e% q, n" {
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????