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:$ T- _* u Y" {* G6 l, c
Name = (WCHAR *) L"Poke";( \. z6 Q8 _8 v
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hr = m_pDisp->GetIDsOfNames (0 v" J# d( q" Q; f% p% Y
IID_NULL, // reserved6 l0 S* m$ Z* k" m- e& R8 \
&Name, // Array of names to get IDs for$ a, p4 ^: w0 I% \+ a3 M$ K9 ^
1, // # of names in the array 3 I* M% t* h9 w LOCALE_SYSTEM_DEFAULT, // System locale . @8 H/ }( E1 e% V8 [' {1 Y* m &pokeID); // Array of IDs to fill on output : {0 e T- v6 ]; p y; a * b/ t' P q1 Q1 W- q# z. W. O
if (hr) V2 M% r; I* R# U }+ c2 b
{ * {) H9 r( N8 q% C% O) T, i MessageBox ("Get Poke Unsuccessful"); ) G3 v. k4 K- L+ J' a return; / b4 p$ ^/ A- p6 e4 ]$ S! j } $ G6 _8 |3 `" q" G) j 4 }" z. k5 d1 i; v/**************************传递数据给extend**************************************/- S7 o( Y3 t# \/ x% F" @3 s
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); " ~2 y- L) z* u4 y/ q! A & V s9 [+ [9 C
valueStr = SysAllocString((WCHAR *) L"1232");- e4 Y, \7 U2 p* l9 i
VariantInit(&pokeVariant[0]); $ F2 p) _" y6 {- F pokeVariant[0].vt = VT_BSTR;" V% D- J/ o1 A
pokeVariant[0].bstrVal = valueStr; ; k. x% c0 {+ P4 f9 x5 r" u$ A' i8 g. w r) {8 L7 R
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");7 }) J, u- |9 q+ }5 ~+ J. |7 b
VariantInit(&pokeVariant[1]); ) }; T! q% R1 G& ]2 {% \0 ] pokeVariant[1].vt = VT_BSTR;; }* h$ @: U# ^6 [
pokeVariant[1].bstrVal = itemStr; : T; q' z' U0 n" _- S9 S I0 Q: a) t" X4 G0 g `$ C; Z+ m
topicStr = SysAllocString((WCHAR *) L"system"); , X; E- H" h. S+ ?1 f3 i9 v VariantInit(&pokeVariant[2]); . ]) s5 h# R5 U0 i2 o d
pokeVariant[2].vt = VT_BSTR;- z8 B! v' ~7 k$ S2 F' ~" s
pokeVariant[2].bstrVal = topicStr; $ C8 ] B+ m- P + j1 e7 n% H/ b, r7 V// Set the DISPPARAMS structure that holds the variant. 9 J4 J& q* Y) J% L1 w6 W) V t+ q$ b8 D0 }7 q) A; K/ Y
dp.rgvarg = pokeVariant; * T5 H% r1 W: N: J E6 A dp.cArgs = 3; & o/ l7 H6 ~1 I' A! m4 d dp.rgdispidNamedArgs = NULL; & {4 ?/ N6 f2 h( r& Z; u dp.cNamedArgs = 0;% I# B2 d, H& n2 q9 |1 }
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// Call IDispatch::Invoke()6 x6 X- C6 S/ X9 o! [% L
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hr = m_pDisp->Invoke( 6 m5 B( S+ s% G5 i pokeID,$ e; K q) Z! q
IID_NULL, 3 U! \, `% n+ @5 [" D4 z LOCALE_SYSTEM_DEFAULT,$ m$ ?* a: _7 c
DISPATCH_METHOD,* ^: [. |2 w, r& S6 H- A
&dp,/ H2 a! N6 F0 `
NULL, 7 }) E \! l0 G9 K& ^4 Z" p$ ^ &ei,# ~* M: ?9 z4 ]% R
&uiErr);8 F8 E9 ^8 z* s
) ~' C+ y, e8 [+ _1 j1 ` SysFreeString(topicStr);$ {+ g3 @/ Q L: b1 C/ r! B
SysFreeString(itemStr); - n' X/ B+ b( w/ g% }# _# c SysFreeString(valueStr);+ P; y! m3 x w9 T) b: X
* b' p. j' U0 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???3 l# T7 ]7 m* M2 F) E
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???? ; A T. W6 I; a) l e4 j4 L: k( u5 S 0 U) K: m8 f2 r, a - {7 D! X7 w h1 s: L! A# {2.这是request的程序* ^* m" ^4 }8 b8 `, I8 r
// Request a value from Extend ) ~9 q! N3 y/ Z& G! v7 Y( {// ( u3 S( ^- s* p* W# {) {* c// Initialize the variant that will hold the BSTR. Set the variant's : O6 A' y. e8 g# y4 s// type flag to indicate the fact that this variant holds a BSTR. Place the + H( r# L% u+ W* m9 {. H" j7 Y// BSTR into the variant structure.. a2 x+ X8 H7 U: x
8 N) F h: j0 u& v requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); % ^# ^& u2 N: g8 M) F 1 O2 _3 a& |! K, Y itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 5 W) m$ b$ n6 x2 Y VariantInit(&requestVariant[0]); ; r( D8 A$ v: |0 C requestVariant[0].vt = VT_BSTR; 9 E2 c: V- w7 z$ |9 o5 T. R1 ] requestVariant[0].bstrVal = itemStr; 1 L; V7 v5 r3 `( {+ B" b* a! e% S% \1 E 6 q( G5 m+ @: d( g7 J. ^ topicStr = SysAllocString((WCHAR *) L"system");& W& T, K4 t( Y$ t1 Q4 A
VariantInit(&requestVariant[1]); 8 d# d! ~! G# g" W# a6 ? requestVariant[1].vt = VT_BSTR;/ i& i. Z8 `8 _; d5 |* F! k6 q& Z- O
requestVariant[1].bstrVal = topicStr;9 A, `+ I6 `+ @
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// Set the DISPPARAMS structure that holds the variant.. v/ I6 [0 x6 Z& h, Q
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dp2.rgvarg = requestVariant; {, l! p0 f. }) J7 p
dp2.cArgs = 2; 4 G% x% h2 Y; a$ w6 O" M dp2.rgdispidNamedArgs = NULL; 7 }! G2 ]1 F: P8 W3 `. N; n dp2.cNamedArgs = 0; 0 f, q s6 x" {" Y; g. I- [5 s' |$ q3 I7 V
var.vt = VT_EMPTY;! B6 Y0 Y" L( }6 @! V3 h9 s3 D7 m
$ v3 J. P- f. @- R1 x+ D# S2 s// Call IDispatch::Invoke(); s; ]1 v/ `% |/ c9 S& B( O* }7 o6 Z
; P# n8 [" ?) `4 K# d0 u6 h( _7 Z hr = m_pDisp->Invoke( 5 `+ Y q7 s0 E1 W2 w requestID, , T( B. O9 Z$ [* A; W IID_NULL,6 V) I" e3 h! q4 A$ ]
LOCALE_SYSTEM_DEFAULT,7 J5 {9 ~; L+ E" n
DISPATCH_METHOD,/ ^/ v5 _! R$ S1 ?; u
&dp2,4 k, E8 M5 W, N, r9 C
&var, 7 i( _( j! h* ^* q1 o# y6 L &ei," Y* }' [ x" U* K
&uiErr);+ R$ d) P$ P' Q7 w