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:' h- f% R. l: C+ V+ e: h) Y8 E
Name = (WCHAR *) L"Poke";' z: w2 A' F4 p/ t$ R3 `: n
* } A& z0 P% F- S
hr = m_pDisp->GetIDsOfNames ( * t" }& p+ F8 Y9 u! p7 H IID_NULL, // reserved5 N) t9 V. S4 ]% u
&Name, // Array of names to get IDs for) x( B+ ?% |9 F# T. r
1, // # of names in the array # b$ k( m4 I! Q& k; A& P* y: x LOCALE_SYSTEM_DEFAULT, // System locale ' H: T6 }5 {1 F: J; m0 u &pokeID); // Array of IDs to fill on output* ?( u% D: e! Z) c; T5 Z
) u3 B3 d9 ?6 e+ k' {$ q z if (hr)/ o4 o: R+ T2 S* m% K& X+ F8 z7 v8 Z$ w
{, O! C' z: [4 e8 Z
MessageBox ("Get Poke Unsuccessful"); 1 j' v* V: q- G z8 f return; ' r! q/ z* U9 b; S0 A* K }' x" H# g& S, o9 [: t% y! u% m
N: R6 `$ C& U1 H+ {" ^
/**************************传递数据给extend**************************************/5 A. Q/ _7 W$ Q
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); & z. u& E$ T2 J5 N# U 5 s6 z$ F' e/ {2 m! T
valueStr = SysAllocString((WCHAR *) L"1232"); : G: p- t- c* V" k VariantInit(&pokeVariant[0]); 4 s) ]! g: L6 K
pokeVariant[0].vt = VT_BSTR; 8 B I, ?! e' I$ v1 _ pokeVariant[0].bstrVal = valueStr; , ~& K: e7 T' `. \* `+ j4 q" q* y5 d& E2 v; r
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 9 @, X4 P3 J p VariantInit(&pokeVariant[1]); , X9 k7 ?" j0 ~) x/ [* J% q1 W. W pokeVariant[1].vt = VT_BSTR;( Y+ z. E, _' }# S7 r5 P
pokeVariant[1].bstrVal = itemStr;3 [1 c3 N: q' ~
" b% v0 t+ f* r+ T topicStr = SysAllocString((WCHAR *) L"system");) S; E$ w; a1 t
VariantInit(&pokeVariant[2]); * z' V5 _7 q# F. F) x8 s; F
pokeVariant[2].vt = VT_BSTR;3 E1 C, ~6 P; t) b' B
pokeVariant[2].bstrVal = topicStr; ( V4 m; C/ ^4 e1 d. n8 ^( `( K v5 I7 j2 }
// Set the DISPPARAMS structure that holds the variant.* y' t. L5 N( |
% {6 y! ^3 T5 z( w9 U dp.rgvarg = pokeVariant; % p4 A* L( _+ W6 ?3 E1 i dp.cArgs = 3;1 W& n7 b: \" A) @) u* k o: X9 ?
dp.rgdispidNamedArgs = NULL; # O5 T& }5 S5 [, D) w dp.cNamedArgs = 0;& D9 B' ^0 y0 h( e( r
0 o; x5 }; {. F, M. Y// Call IDispatch::Invoke()4 _: |, C$ ^% T! u
, U8 ~' e3 Y- r hr = m_pDisp->Invoke( 8 g2 e( f6 W' c! {$ S7 m0 } pokeID,7 K+ F+ _/ z4 R5 `
IID_NULL, : M3 ]# Q0 q" I/ H3 t! c+ V9 U LOCALE_SYSTEM_DEFAULT, ' f1 v9 F' P5 ` DISPATCH_METHOD, - _3 ` F( K+ s0 I! c$ e* S &dp, 3 @! x$ u3 t' b, H! }7 n NULL, " }' `; L7 W" k6 G; _* g' H0 d1 i &ei,4 E" G& T* H/ {
&uiErr); ; B0 A) _& {) H5 t0 N% N3 f2 l8 B/ H0 f! ?: a# o7 y7 i
SysFreeString(topicStr);2 I% s5 Q( y- I! P1 ~. q" x3 r5 q
SysFreeString(itemStr); & d% d+ i# p' o+ J; e3 p SysFreeString(valueStr);7 ]* g0 a. Z" D
% E3 K/ G! S1 q+ C! ?* 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???4 I4 t+ |) @% T t+ S& @
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???? 0 S2 I( R, Z4 p2 \9 {3 }. m8 I0 F& p
. ~$ L# U& v* ^9 ~9 T' ~
2.这是request的程序 7 j( @, v- L; e3 j// Request a value from Extend - D3 e% U1 @% S0 W2 ]/ i//' V4 }% K) Q5 H6 l5 k+ i( M
// Initialize the variant that will hold the BSTR. Set the variant's : Z' \! Q3 @/ F+ x, A) N( C2 A// type flag to indicate the fact that this variant holds a BSTR. Place the 7 K+ F2 ~! z: B+ E1 {- h( o// BSTR into the variant structure. % H4 i" S3 u' W9 U! `! W/ V: ?# k3 Q
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);# A! [. X4 |1 v T# g* p" o2 W9 o
& ?, {. g% Y9 A8 D* i- }/ R0 n$ `
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 2 T$ u0 E2 Z& B- E, o' r- f VariantInit(&requestVariant[0]); " Y1 E) r7 k8 \+ ]7 B
requestVariant[0].vt = VT_BSTR;5 D6 [+ i9 Y2 x
requestVariant[0].bstrVal = itemStr; & A5 t9 [' N0 S" r! f& Q0 I9 E) a% O- w- x2 x, e, k. l1 \8 G2 J8 t: I
topicStr = SysAllocString((WCHAR *) L"system");+ u" q! w* Q0 n; B6 ]: r, C. O
VariantInit(&requestVariant[1]); % a& ]1 f7 l/ t4 J requestVariant[1].vt = VT_BSTR;. F1 k! V, V; i. n
requestVariant[1].bstrVal = topicStr;" o* [: h0 m1 I7 X
6 @! @" [6 ]5 o7 ` J* a
// Set the DISPPARAMS structure that holds the variant. / }7 @/ D* t0 _3 o+ g8 d% d3 W" a& |3 M5 L
dp2.rgvarg = requestVariant; 3 |$ R( N5 p4 c( d$ L dp2.cArgs = 2; 5 M$ _+ o/ X. q7 N( l& w" X dp2.rgdispidNamedArgs = NULL;9 f+ L. H- _: W
dp2.cNamedArgs = 0; 0 p) W. X% v4 G u2 J 2 s+ W( |! Q }' L s7 a7 T: @- ?5 G var.vt = VT_EMPTY;6 F: K1 t" M3 X0 {+ g/ x; q! r
+ N4 w( ]- a s! U// Call IDispatch::Invoke()# K( M: Z7 J% v$ q/ R
4 X' a9 v" b! h. P2 a" ?* L
hr = m_pDisp->Invoke(. ~' u/ |7 w3 z* W* M! Y$ b4 j
requestID, # ^, c5 ]' Q/ i5 [3 M0 x2 T IID_NULL,: m+ I6 C5 r7 G- b; k& T: V5 B7 U+ m
LOCALE_SYSTEM_DEFAULT, , E; A" Z) _" F3 G; G DISPATCH_METHOD,7 F4 s4 A& l/ J( }1 U1 y- }
&dp2,0 | l, F% {4 ], K
&var,+ s# ?4 t7 I! L
&ei, ( j4 F7 w& c i9 @ &uiErr); 9 h/ W9 j! f& G! Q1 I8 z# X ( [" j) n5 _$ W# j# D SysFreeString(topicStr);$ v5 M$ g! |$ A
SysFreeString(itemStr); O/ Q3 P" U+ _8 J$ v) d请问该程序是获得extend里面的哪个值?' I' M; Z. W$ c. p' r" P f
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????