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:1 i9 m5 h9 v; n9 Z) S
Name = (WCHAR *) L"Poke";- d7 Y7 @5 G! t/ o6 T5 w
/ W/ B* [" H5 E$ w+ S1 ^0 j hr = m_pDisp->GetIDsOfNames ($ j Q0 j4 ~. j5 x5 n& A5 e& p
IID_NULL, // reserved- F3 m- } \; I: O" W5 I$ A: c# j' W
&Name, // Array of names to get IDs for ' v Z2 Y) y) U3 N$ n3 v! r* \% Q 1, // # of names in the array ( q& R U* b8 u8 c3 q5 \ LOCALE_SYSTEM_DEFAULT, // System locale% h+ ]$ g& [, a, G' \
&pokeID); // Array of IDs to fill on output+ n; g. ^" Z8 u
: r& I% y! }8 B( e. d: W
if (hr)2 h6 \* u! K: D! v& A
{8 H3 J) s1 H' W1 z( q
MessageBox ("Get Poke Unsuccessful");' z) U3 ~5 H! n. `5 B8 i
return;% o8 i% K, H' ]6 f
}2 E* H: B& G9 R- X% N% M& Q
$ H6 e }. W: i' T
/**************************传递数据给extend**************************************/1 W) u- P+ l3 [
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);9 h# J4 o3 ]7 X9 [3 A- D$ t2 ]) U
- N+ d$ d" A, j% n! m% A8 V3 u
valueStr = SysAllocString((WCHAR *) L"1232");1 [5 }2 i0 c+ b' y: b0 h7 Z k( k- G
VariantInit(&pokeVariant[0]); # g1 I5 O; b2 V: V+ W: l
pokeVariant[0].vt = VT_BSTR;- o, P! |- o- D5 W3 o
pokeVariant[0].bstrVal = valueStr;$ g3 L+ a k/ d) a- y% T3 `& k* C
. V; ~, B, N1 T1 O3 |7 a* {
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");+ V* e$ h' r' `, K9 B
VariantInit(&pokeVariant[1]); " G( C k2 a$ Z- ?$ f+ `; T: S pokeVariant[1].vt = VT_BSTR; ) Z, Z; r6 l& h# a pokeVariant[1].bstrVal = itemStr; # G s2 ]+ z5 H' s5 d2 U3 Z( |- e" @
topicStr = SysAllocString((WCHAR *) L"system"); ; X5 Z! Z: k% C VariantInit(&pokeVariant[2]); + i2 i3 U. m& y& d& b+ p3 B7 J1 t
pokeVariant[2].vt = VT_BSTR; ) S [; ~% p4 q. G2 C, c: }- c' ? pokeVariant[2].bstrVal = topicStr;$ b$ r/ D# m; z0 A9 g6 L& ]
8 S4 h$ R5 C( A$ I
// Set the DISPPARAMS structure that holds the variant.8 @3 W& o. W* T% X
K4 A+ p% q* `; ~7 V8 E
dp.rgvarg = pokeVariant; , t7 Q3 l, S* M" Z: k# e dp.cArgs = 3; 1 ]6 f7 M9 E9 s- n+ `# b dp.rgdispidNamedArgs = NULL;, h: D# @) F$ h. N0 b
dp.cNamedArgs = 0; ! o/ H6 H& J$ W" W! z7 |9 X ) c& X V* q$ j1 d9 F# K% P// Call IDispatch::Invoke() 7 s6 z8 o& ~9 }" b: v% |1 a " g+ [: |; v& _; L+ S4 r hr = m_pDisp->Invoke( " d' x1 w- [! ?) v) f$ O pokeID," w$ W; `0 l h. e
IID_NULL, 6 p4 B* n' X# L2 L* p" R- S! A6 g LOCALE_SYSTEM_DEFAULT,2 [0 e ~# e! C$ e; N. P
DISPATCH_METHOD,* K) R* z% o8 P5 _) ^
&dp, 8 x& O* L" K0 d* O5 ? NULL,6 K. @1 }) |1 ^! k+ A
&ei, 7 T# K( R, A4 p3 w$ a: w0 n &uiErr);1 n, [3 f E r( F5 Y
5 z# T$ r7 M; s) v) N$ j8 s" l; h; J SysFreeString(topicStr); 2 I9 D L1 @: i SysFreeString(itemStr); + U {+ z g$ ]* E9 `% k# C SysFreeString(valueStr); # T q+ E# F3 i9 }* Y 3 V# [' }+ @! Q$ @' U( G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??? * Z9 `: [* O! n' L) u 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???? " @& i, ?8 s% j7 d5 n4 S k# y. w3 ^7 I1 I6 n; J) V
2 C# F9 m7 x* I! i u2.这是request的程序, Z" |: u" v) g- G: T, M
// Request a value from Extend j7 s3 Z( j! x) ?' d$ T
// - f5 b: A, }% x/ t// Initialize the variant that will hold the BSTR. Set the variant's) B3 d1 S6 m# v- ]7 |
// type flag to indicate the fact that this variant holds a BSTR. Place the - }) p( N7 f N$ ]5 {// BSTR into the variant structure. ( a, l0 j+ z3 {- E" |- e8 Z2 i/ s* {( T! K7 A
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);, ]% C0 {. \) E' k2 i+ L) \5 v1 F
' V5 x7 n% O2 @$ r
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");) T# K3 Q% U M7 O! U* `7 l
VariantInit(&requestVariant[0]); ( C* q8 Z7 d9 u! X+ O
requestVariant[0].vt = VT_BSTR; 2 f0 ]3 U% t8 Y8 T* d! S requestVariant[0].bstrVal = itemStr;0 h; j+ u# ]7 F1 M% M+ b% z! n5 t
6 ^% R5 E- z+ U# i topicStr = SysAllocString((WCHAR *) L"system");# t3 w7 H8 ~' v; h: h
VariantInit(&requestVariant[1]); a; Y: E6 f( o9 E3 B
requestVariant[1].vt = VT_BSTR; 7 N( l7 [0 G: i requestVariant[1].bstrVal = topicStr; C1 M' j- F/ {$ B# W3 f
2 v) l9 A7 S& b; b* l7 t) j// Set the DISPPARAMS structure that holds the variant. 2 s' r' A; n2 }! S2 t4 T% D, v( L! G0 D7 d5 N- Q
dp2.rgvarg = requestVariant;7 D- L3 f: a( Z- x e% ^' y$ B6 F
dp2.cArgs = 2;7 J8 {& Y9 X5 Y/ j0 h2 x: F
dp2.rgdispidNamedArgs = NULL; * a9 r$ y2 B- o# y dp2.cNamedArgs = 0;! m: u; _1 f- C+ X- ?# L& [
/ ?# J! @& y- ] var.vt = VT_EMPTY; 4 g* p9 J2 @$ p1 v) z/ q: M * M8 Q% B2 X) [' U: P// Call IDispatch::Invoke()6 c. e7 z7 a! c; z. K) N1 D
7 d$ K, T5 F i. }2 x hr = m_pDisp->Invoke(, v# X- e: |: C7 ]8 z
requestID, / \2 b$ C7 e6 r8 m9 w+ o0 F IID_NULL,+ m3 |$ }! \- ?% h( j. D% N
LOCALE_SYSTEM_DEFAULT,* l& ]: i' @0 Z9 k
DISPATCH_METHOD,/ t6 N) l) k* F' z, i& F
&dp2, . \ e; [; R5 }) I( A; B! V &var, 1 p: P' L) j2 J# Q1 M2 m0 d; V6 N. b% A &ei, 0 i: R3 W- h/ f! M$ ?' L$ s3 B &uiErr);+ l, q/ Q- M/ s# y/ a