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:, R" X( I" g3 w$ M
Name = (WCHAR *) L"Poke";0 X& g- e4 q5 Y: |0 ~' N
& F6 C' _! L& Z7 z2 [7 u hr = m_pDisp->GetIDsOfNames (+ m R: C3 ^# z% X" ?, o, Y
IID_NULL, // reserved( d, O& N" J' l
&Name, // Array of names to get IDs for 6 R5 J+ ?- k& t; F8 B 1, // # of names in the array * a: h$ a" }, b* S. l6 G4 b l& S6 J LOCALE_SYSTEM_DEFAULT, // System locale' @) R8 e) s$ c- p" `' C. a1 H1 q$ M
&pokeID); // Array of IDs to fill on output- `* G# I8 K f# d4 X P
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if (hr) 9 g3 f. w. Z% a$ P: p$ `0 h {, O; `' A- ]9 {: ~. C5 d* q
MessageBox ("Get Poke Unsuccessful"); ; C1 c; c# K3 E7 l return;% X0 Y* S4 H" i( T
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/**************************传递数据给extend**************************************/" U. A2 n% M# o: v) Z% c
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); * u7 j* Y5 e+ O$ M + _; g4 f4 ?. S1 N& B' U
valueStr = SysAllocString((WCHAR *) L"1232"); 0 ]# E% t9 j8 H6 F: H( T VariantInit(&pokeVariant[0]); ; D: A, s& m" w% F1 h
pokeVariant[0].vt = VT_BSTR; * w+ o1 x r% Z, i6 P( a" g pokeVariant[0].bstrVal = valueStr; " R+ G1 s7 ?, h. C; e0 A8 b9 x 8 a1 j! N$ t" P; v t- O- l' A itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");3 F( i6 J _( v# s! s+ h3 e
VariantInit(&pokeVariant[1]); 9 z U8 I+ c- g! ]
pokeVariant[1].vt = VT_BSTR; , h/ @6 x- R" S1 K c3 V) a7 I; S( v pokeVariant[1].bstrVal = itemStr;8 w. U! B: M2 ^7 Q
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topicStr = SysAllocString((WCHAR *) L"system"); ( [% Y3 q* s; T, b0 x' S VariantInit(&pokeVariant[2]); . W s T5 G% a pokeVariant[2].vt = VT_BSTR; ; ?& D6 v* a+ Z2 w: {; O" V$ J+ p# D pokeVariant[2].bstrVal = topicStr; 2 U7 n$ y2 T1 f* I. P5 h% Z " @! h, i7 s7 J' a4 }// Set the DISPPARAMS structure that holds the variant.) l$ G% G7 @0 S$ I% [* W( x3 d
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dp.rgvarg = pokeVariant; ! s9 S7 A+ U% C6 N8 n8 b dp.cArgs = 3; 8 }3 S, r, G1 ]; G/ B dp.rgdispidNamedArgs = NULL;. P3 k9 e9 j" j
dp.cNamedArgs = 0; ! x# N. l# J/ U2 ~! e % S4 r- m$ q+ T3 q// Call IDispatch::Invoke() 4 Y" c4 X- |9 I3 }7 p! a" C4 Y; \3 H# ?8 b
hr = m_pDisp->Invoke( / `, [2 ^( u: M x pokeID, 3 U0 N2 f" ~7 F9 Q4 {7 Y O IID_NULL, " K: Z! H6 q& _6 m LOCALE_SYSTEM_DEFAULT,: w" G5 e' G+ x( \* M8 y* U
DISPATCH_METHOD,4 }9 [ j5 ]2 n
&dp, 1 x0 T+ W: {# W, J1 y NULL,; r% Y$ h- ^& m; j+ n
&ei,* V9 Z7 f2 U( {# w. B
&uiErr);4 k* Y( L l' {5 N1 Y' x3 A+ m1 D
8 Y/ b7 m$ A) t* N; c% k3 @ SysFreeString(topicStr);' p$ Q0 n/ G1 ?9 D* w
SysFreeString(itemStr); 8 F4 }" R( P6 A3 W SysFreeString(valueStr); " {/ _# i! j- l0 b0 w1 m $ Z& L9 }. J) y$ 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???8 b) q7 e# h' x5 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???? u3 o& Q/ G5 W* v A
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4 t1 f) _2 o2 y; _* o. |8 Z2.这是request的程序: u( e) q. t( P( w1 Z
// Request a value from Extend ' R, n, x6 o4 E* b6 g8 M6 ?//- C$ ]& z! G& B$ C4 |( P$ |
// Initialize the variant that will hold the BSTR. Set the variant's: G$ Q6 W) |' J# X7 C1 o, A7 H
// type flag to indicate the fact that this variant holds a BSTR. Place the! |9 Q7 E* q) M* P
// BSTR into the variant structure." [+ k n1 n# z- P7 Q. N3 f5 r* e
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);# H4 m( {( {* D( E4 P6 v
9 i' h& {5 l! ^ d itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");' x0 E4 X+ {- n* ` r/ i- g
VariantInit(&requestVariant[0]); / Q2 `0 N' g' @
requestVariant[0].vt = VT_BSTR;4 _& Q9 E$ e, j5 t/ c2 I8 W
requestVariant[0].bstrVal = itemStr;- u( G9 i/ K9 J! S
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topicStr = SysAllocString((WCHAR *) L"system"); & Q1 t* z, u- ~: _9 F! n2 H$ y VariantInit(&requestVariant[1]); 0 d3 j9 N- N$ Z3 R7 J requestVariant[1].vt = VT_BSTR;. I0 ?0 M5 {2 r7 H. Q+ Y9 G
requestVariant[1].bstrVal = topicStr; 4 o& w, Z# P+ L+ r% X/ Q: `4 G, X% J3 h6 P% R: i( I
// Set the DISPPARAMS structure that holds the variant.2 a& @, @& N% D" X$ E
# D" A/ M! l7 l) g/ c# z dp2.rgvarg = requestVariant; # l$ T8 a( Y3 \ dp2.cArgs = 2; - t# ^! p- Q$ t g' a t, \+ L dp2.rgdispidNamedArgs = NULL;; y) P3 s' `8 |
dp2.cNamedArgs = 0; 2 `% T( K4 B8 F* C6 v3 [1 v5 Z! H0 n0 z! w! L# v( [
var.vt = VT_EMPTY; ' u: n, M6 m8 h0 e0 y - R. S/ r* \: r// Call IDispatch::Invoke()) l b4 l. O; u7 N& v, R
' p% G( I7 X5 n hr = m_pDisp->Invoke(: j# n9 `3 @3 Q+ |6 r, F# N
requestID, 4 Q: P% M8 t: X IID_NULL,: t0 T( g" E* p) d: _
LOCALE_SYSTEM_DEFAULT,3 \* e) I3 P) }' O' M* W+ g" z
DISPATCH_METHOD, + s% \; u( X0 E &dp2,$ o% ~; m' w8 f% K3 u3 v' J
&var,$ q# U: G4 \4 p. ?/ m6 b- N
&ei,6 N) O( G* [$ B- l
&uiErr);! c; o2 O( m$ b/ {1 K( a/ M0 ]