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：* `" z% M. `; [. L# p3 } D
Name = (WCHAR *) L"Poke"; ; [' E* ~% n7 i3 ?$ r 6 ^/ k! [# U) B8 F7 \, s" s8 C
hr = m_pDisp->GetIDsOfNames (1 R2 D6 |8 M( J8 n; O
IID_NULL, // reserved- \- Y8 I+ t3 S. T) \8 Z
&Name, // Array of names to get IDs for: p J( T/ u" e
1, // # of names in the array" j K% S0 B% j
LOCALE_SYSTEM_DEFAULT, // System locale9 e0 V, X% M" ?) i" a/ \
&pokeID); // Array of IDs to fill on output: T3 z1 j) a) W0 e* C2 r4 ^# h
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if (hr)" r5 s7 I, D; N. A; B0 ?
{ h. v* K7 y9 `* Q% I7 W
MessageBox ("Get Poke Unsuccessful");& k% W4 u1 o6 i
return;, b6 u6 m) O- Q: z- P/ n, z" X
} 3 G" Y6 K) Y! J+ p- n3 @+ X# f2 X1 k+ J" K4 n6 a9 h7 K# S" B( z
/**************************传递数据给extend**************************************/ . F! u6 z+ ?) {, v- Z5 ]( L pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); & i$ i5 ~7 @/ r , S- A5 K" v2 @. g q; C( g, ~- o0 h valueStr = SysAllocString((WCHAR *) L"1232"); ( F# J7 _5 l6 X+ [ VariantInit(&pokeVariant[0]); % Z) M' m. P" d0 Y y" k4 o- f1 P
pokeVariant[0].vt = VT_BSTR; 7 G9 x; Z$ w2 Q2 {( M5 Z pokeVariant[0].bstrVal = valueStr;/ b% r+ [6 Q7 _# K. i7 Z% u
' l2 R7 f) S& X3 U% Z; D4 { u itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 5 R. ~4 X( B, D* | VariantInit(&pokeVariant[1]); . H( r' O+ [( w% b& h' q. F" c& q pokeVariant[1].vt = VT_BSTR;4 y3 U& U( W& i/ O! K% }
pokeVariant[1].bstrVal = itemStr;; ?. |! ?! } o' i+ g
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topicStr = SysAllocString((WCHAR *) L"system"); # g2 L+ L2 X5 y$ Q4 f4 L. Q+ t VariantInit(&pokeVariant[2]); ) V5 \' p) k3 s% @. p
pokeVariant[2].vt = VT_BSTR; $ J( d+ ^, G( N2 n! u2 `; q pokeVariant[2].bstrVal = topicStr; ! B5 _3 p; L. _ t1 K3 A, j& h" B4 e% }& b% s0 X& `. ?2 o
// Set the DISPPARAMS structure that holds the variant., q- u! N6 P* C/ e" { e4 L$ F" G
R: _5 y w4 S( v f+ _% ]
dp.rgvarg = pokeVariant; ) r, F$ a2 O" g2 K dp.cArgs = 3;+ d+ y% O8 _0 h3 b- P$ \& L
dp.rgdispidNamedArgs = NULL; r J7 s4 x! f1 K/ p- |- m+ R$ O/ P1 J dp.cNamedArgs = 0; E; j8 E) I" b& f8 L' `% [
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// Call IDispatch::Invoke() 1 g3 W1 f+ l9 y4 A8 z ; y; g, ~9 |, k" U hr = m_pDisp->Invoke( 0 G- T7 u$ r# e pokeID, & \( _6 f- \7 ?1 g p% O3 h! }; f8 m IID_NULL, 0 D/ z0 s! c* B) K% z LOCALE_SYSTEM_DEFAULT,+ B1 x4 f! z) @$ y
DISPATCH_METHOD, S% d- ~; _8 t &dp, ; |/ @; \+ V3 L( U# o NULL,6 o7 f( I' b3 h. ]. ~
&ei, 2 k( S3 @* M: ^( D4 T. z. t* y4 E &uiErr);$ l& ?5 J! q; E* w
5 _' x& L+ T' |+ W& u& n
SysFreeString(topicStr);9 F; F: D* ` A
SysFreeString(itemStr); - a- K" k& ?! P) |0 s& q$ c/ ]9 H SysFreeString(valueStr); ' {0 a9 p* U$ R7 D0 p) c ( l: t# P- ^' P! N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？？？ ; i, W! i( |, K: E. \4 R4 K ~. q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？？？？" J4 y- a4 n2 g" b; P
& [! |' h1 R7 p) M1 u" k & O" p& h- E5 Q5 V& m1 U2.这是request的程序' p$ Z* d# v# l. Z9 k/ `8 b( m
// Request a value from Extend ( c5 Z0 w6 x( f//1 F2 r; E" [, Z/ F1 g6 P
// Initialize the variant that will hold the BSTR. Set the variant's6 W1 H' Q9 s7 A7 z1 w
// type flag to indicate the fact that this variant holds a BSTR. Place the; V1 Y( p! z( Y* {$ d T7 k
// BSTR into the variant structure.( c, B$ U' k" L: T4 c$ F7 G
7 _4 K. T2 ^: H7 u- ^" E requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);& u. u1 \0 P6 T \# l
& v* Z0 K# g: o# P0 K- f itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");- H3 Q ]* m2 h
VariantInit(&requestVariant[0]); ; m r. M, }9 r1 H requestVariant[0].vt = VT_BSTR; ( H- ^& p: B4 I- ^ requestVariant[0].bstrVal = itemStr; # A9 J; J" L* P9 F+ Y, F0 h 9 R( A! G+ ^3 t- v( W topicStr = SysAllocString((WCHAR *) L"system"); ; z! v0 Y# Z ]2 Z/ b& U- D$ m$ Y VariantInit(&requestVariant[1]); % F' A3 S4 N5 d& o$ e requestVariant[1].vt = VT_BSTR; 2 U# f, I3 m% T requestVariant[1].bstrVal = topicStr;$ U8 M* R7 C2 p0 x3 f5 B2 o
1 v" _% I7 W5 |1 t& i- }4 a// Set the DISPPARAMS structure that holds the variant. ! h. l+ {5 ~% b # e6 i) ?. `5 I) a" N2 W: U dp2.rgvarg = requestVariant; ; V+ `$ j& m- f' t0 H; P9 x% L" @ dp2.cArgs = 2;2 M" v% y$ X9 ^7 O N3 B) I
dp2.rgdispidNamedArgs = NULL;& |* w( p0 z& x/ D7 m6 v
dp2.cNamedArgs = 0;2 }$ N- j) U) Z. h* Z! x; y
0 n' L h4 }, H1 O5 d var.vt = VT_EMPTY;5 r+ x$ a7 }8 c3 R! U, m: c# l, n
8 F, _: p( Q- d. E$ K// Call IDispatch::Invoke()" }: G8 L6 T# Z2 O* r; r
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hr = m_pDisp->Invoke( * p0 y$ q% \' T; N+ _5 q G requestID,+ s" }/ l4 u9 c% G
IID_NULL,+ R. R' j3 N$ o3 p
LOCALE_SYSTEM_DEFAULT,9 A* O H' @% W3 M+ D/ Q" k
DISPATCH_METHOD, 0 ]5 k/ P, L8 r! C &dp2,$ F: |$ c6 c% g' C- i) z0 `
&var, 7 o4 @( s7 A- }1 U' {+ A &ei, 5 ?! K. Y7 Y" X, ^ &uiErr);9 K' f/ U2 s* L+ L' X
5 I: i, b2 p! v* I SysFreeString(topicStr); * K4 |1 s1 ~2 l0 f SysFreeString(itemStr);5 B' S; A5 ]/ B2 w. o
请问该程序是获得extend里面的哪个值？ [" H3 N# G3 v; C
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
