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$ S/ W* G: n- I
Name = (WCHAR *) L"Poke"; ' z* y" S( X! e 2 ]5 x5 r6 ~5 R& X
hr = m_pDisp->GetIDsOfNames (8 I" ~0 c( r. N$ N0 Y: J/ {0 h O
IID_NULL, // reserved, D% {; K: I) M; F
&Name, // Array of names to get IDs for' g- S" G7 O q" i9 C8 Y# o
1, // # of names in the array2 w; l3 W2 S0 W. H' j
LOCALE_SYSTEM_DEFAULT, // System locale " s0 R" ?' |& g: K# a &pokeID); // Array of IDs to fill on output t' \5 _' k/ r% w4 i3 c # Y$ t8 t6 F, \8 A( r" Y if (hr)7 J" d$ k9 H8 ?5 G& B0 f* D
{ % \7 D5 ?- u: v; b0 p: H7 P MessageBox ("Get Poke Unsuccessful"); - U5 ]# e. }, Y) }/ e return;2 [9 R- E( B2 ?" p% m( r/ U6 \- }
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/**************************传递数据给extend**************************************/: a h) {; F J7 J2 W% R( Y
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);; ^) s& G l8 I$ T' `4 Y: t( v' C
) F0 D3 w& W2 `- \- x valueStr = SysAllocString((WCHAR *) L"1232");1 S9 p0 d! c/ O* I/ H6 F8 r- [
VariantInit(&pokeVariant[0]); 8 l9 c, H5 N3 I' J0 _ pokeVariant[0].vt = VT_BSTR; ; F5 o D5 r0 n5 b pokeVariant[0].bstrVal = valueStr;6 j" L! Y& l' O
) D) Z2 _: B; C. L) u8 { itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");" K& {. v: g8 T& H3 t
VariantInit(&pokeVariant[1]); & @* m( Z& v- J5 C7 Y& W: _ pokeVariant[1].vt = VT_BSTR;1 W0 a0 V4 M9 x& E' w
pokeVariant[1].bstrVal = itemStr; % z6 s0 N3 N9 P; Q. H" e- Q9 O% q; t- X3 A6 a' y! ^" J: h) h( M
topicStr = SysAllocString((WCHAR *) L"system"); , a: z5 w7 o, G1 q VariantInit(&pokeVariant[2]); % [5 g1 q) i. n. I \/ @. t6 V: \
pokeVariant[2].vt = VT_BSTR; / P4 ?) n( {; B pokeVariant[2].bstrVal = topicStr;! g5 H/ e* N! t+ ] Z2 y4 s6 f5 V
3 v. M0 w& k5 |" k, L// Set the DISPPARAMS structure that holds the variant. 3 s) _/ Z* I& J! `7 ~% L & J; s6 I! X3 R8 O' W6 ` dp.rgvarg = pokeVariant; 6 c3 g. ~0 P- L. F dp.cArgs = 3;" D4 j4 t$ f* x: N& C( \
dp.rgdispidNamedArgs = NULL;) f6 T, k4 L" n" t, `1 G4 L; I
dp.cNamedArgs = 0; * E$ v- O K3 y$ B0 @, T7 y) z& `6 t/ M, T6 Y) I& P
// Call IDispatch::Invoke() $ j: e& A, ?2 M( v# ` $ D% o; o6 [' C! w hr = m_pDisp->Invoke(9 ]2 q% R. J# V0 h8 m3 g: a* m
pokeID, ! k. s; }! u" N3 H IID_NULL, ) d# K8 N' E: S& |7 A& B LOCALE_SYSTEM_DEFAULT,$ J ~' P; [4 W) m
DISPATCH_METHOD,; V# O+ r. |! J8 e
&dp, ! H& k$ x9 U0 Y7 \# H9 j NULL, ! e5 F4 J# N- w2 k+ }; u &ei, ( p/ Q) G. i! m% j% f/ t &uiErr); 5 {/ U( x: y# g. V' D$ h, r7 ]1 v- T, ^% B
SysFreeString(topicStr); $ I) q! Q* \$ z) L ^9 L SysFreeString(itemStr);# `6 v! o* o3 e5 d
SysFreeString(valueStr); ) O% K/ ?4 y9 G 0 V$ }0 h! R+ R2 s; n: V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？？？& x) K+ o6 n' f9 k w+ a5 x
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？？？？+ c( E3 A% w, C N0 M
$ D2 f# I- J/ \! z' m# G+ ]: A5 Q 9 M: q2 o+ w& c& y2.这是request的程序9 C5 S9 X0 c. T7 u6 A X+ ]
// Request a value from Extend ; Q9 Y g. l1 C% S+ f5 D// ! q; x' @0 Z! P! U, w( |; Q// Initialize the variant that will hold the BSTR. Set the variant's 1 r' h. O% Y- H! P2 P' G7 E3 V- H! \* ~// type flag to indicate the fact that this variant holds a BSTR. Place the # M# Z: n# k; F// BSTR into the variant structure. + C' h- U# F( g p( U( @! C% ^* N$ l5 _& J+ e
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);! S0 ?% s2 G4 X. |
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 5 Z7 j8 I+ n5 T VariantInit(&requestVariant[0]); 7 `- w: S1 `% S& C& h* O
requestVariant[0].vt = VT_BSTR;* c. g) A& e0 Z8 N s- T/ T& [* B
requestVariant[0].bstrVal = itemStr;: s( g$ b. M) z/ F. `& c, g; ]
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topicStr = SysAllocString((WCHAR *) L"system"); 3 H( d2 i# m) Q VariantInit(&requestVariant[1]); ! r Y o2 J" o; a7 O8 y
requestVariant[1].vt = VT_BSTR; # R9 q( f0 y) a# i8 N' A% L0 b- T. o% w requestVariant[1].bstrVal = topicStr; 5 [- ^6 M$ Y! @ T+ L 0 R/ a, M, ~( T// Set the DISPPARAMS structure that holds the variant.+ X: N: e$ G! q% y9 \" ]* v
- m( ?! @' Y% N; K* h4 n3 T dp2.rgvarg = requestVariant;& g+ ] x( I q7 t9 l
dp2.cArgs = 2;8 ~' T+ P6 j: H5 a) F" A5 D
dp2.rgdispidNamedArgs = NULL;9 ]5 M0 m" @1 D
dp2.cNamedArgs = 0;# X* |# h/ E1 _, G5 {, h, z
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var.vt = VT_EMPTY;1 i, ^* F) S* Y" K; R+ M. Z
/ O- F/ ~& a+ A. \ N {// Call IDispatch::Invoke() ) k4 f! D7 I3 b, Y; [ , c1 a( @4 y9 Y K! C) H hr = m_pDisp->Invoke(4 t! @4 d3 R5 c) B+ C
requestID,1 f! L6 D. _% ]/ {+ {5 B
IID_NULL,# @% t3 F+ P A
LOCALE_SYSTEM_DEFAULT,) G* B( N# o! a/ K6 h3 g% X
DISPATCH_METHOD,+ [; z. B$ b+ U2 W
&dp2, 4 s& Y; E$ f# h4 j &var,+ c! C- ^) E8 O' s* f8 v, V
&ei,- B/ A7 @: J, E" [" D
&uiErr);5 m {1 n1 |+ a6 z+ |9 `
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SysFreeString(topicStr); . |5 \3 _' g: r0 o' @4 C SysFreeString(itemStr); h4 b9 k- F- \( l3 V5 S* W8 ]
请问该程序是获得extend里面的哪个值？0 a3 D* P9 W5 i. Z0 Z
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
