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： + S6 L T8 k, J: V2 g* T+ |Name = (WCHAR *) L"Poke"; : _& Z& |- p) c' {2 O) a T 6 K6 k$ \; l3 V2 [: R) e/ W
hr = m_pDisp->GetIDsOfNames ($ Z" {1 o' I, M* l
IID_NULL, // reserved / I3 L6 `& M* o* g1 f" B &Name, // Array of names to get IDs for0 W/ _7 }" D9 H9 J( ]/ ?
1, // # of names in the array/ C( z1 U# f, b ?2 B; d$ t, p
LOCALE_SYSTEM_DEFAULT, // System locale5 u: T: `0 W0 A" j6 u. U8 F" ^0 N' m
&pokeID); // Array of IDs to fill on output0 F3 J, N! T/ ~8 M z* F
9 L, b! G k; H$ p( Z if (hr) ; e2 |' v# F0 I' n { 3 y; {; E6 d" c. H7 C MessageBox ("Get Poke Unsuccessful"); * K! _ P# ^, Y return;& h. |0 t- W- l+ g. I
} % _& g! K1 P5 @/ I8 A! n6 u! ^$ ~& m' ?# F3 E+ ~2 p {
/**************************传递数据给extend**************************************/2 Y+ E s# w4 B, T' g# i" h
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);% r5 i/ N8 Z* M% ^0 `, I: E
/ E* y5 N7 q! a valueStr = SysAllocString((WCHAR *) L"1232"); 8 e8 l3 A7 ]9 ?0 x0 T VariantInit(&pokeVariant[0]); 0 i- ]- a7 u0 G8 s9 L; y% M, w pokeVariant[0].vt = VT_BSTR;4 g$ a' U ~, {( m: X
pokeVariant[0].bstrVal = valueStr; 5 `- N; \4 \' {3 G * Q% C! _( N( @* y+ W }" M itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");' \8 j' `2 ^) }7 i/ B% y0 h4 \
VariantInit(&pokeVariant[1]); * h I- \' n" o* e
pokeVariant[1].vt = VT_BSTR;0 t, l) B* M5 M) Z" G' ^
pokeVariant[1].bstrVal = itemStr;/ }( u, C1 w$ i5 k5 |) X+ l
1 s6 ]1 K3 Q( d) S5 }- k! ~2 z+ |1 d5 }$ Z
topicStr = SysAllocString((WCHAR *) L"system");5 k# @2 H# b, f2 t7 W
VariantInit(&pokeVariant[2]); " t y4 R6 Q$ y; U! l: Y
pokeVariant[2].vt = VT_BSTR;( S# O/ ? @) U, x2 P
pokeVariant[2].bstrVal = topicStr; ; l' c1 |1 n" b2 L4 L. @. a0 Y" B" {4 |- B! s0 Z# X
// Set the DISPPARAMS structure that holds the variant.* ]* g) I, O8 O w0 }5 {) c
% S7 p. q3 Y& |5 Y dp.rgvarg = pokeVariant;) a: R, J2 _) F
dp.cArgs = 3;6 F* A9 S& Y1 S7 o( e& o
dp.rgdispidNamedArgs = NULL;, X0 ~, }( o, k+ V
dp.cNamedArgs = 0;. s4 t7 x4 D9 ^/ @6 o5 U2 W. a: m
. j; x6 V0 T7 K
// Call IDispatch::Invoke()3 ^" j t# E: n& @4 U
1 }6 h! ]# ^ d3 L& ?' C1 G hr = m_pDisp->Invoke( ( `8 B4 @! C& h. h$ S# G pokeID, , Z p: |* Y! c$ ?8 R IID_NULL, " M2 \5 U( M( H% E) S4 ? LOCALE_SYSTEM_DEFAULT, # i( u0 M. x* |3 y: U- I' Z DISPATCH_METHOD, 1 Y; s" b+ G( [) P8 X &dp,3 S3 x* W: ?- V
NULL,3 C: k6 o; C1 o: L8 N
&ei, 0 {# c0 Z( e: o: i F$ X/ } &uiErr); 5 `/ |$ h6 m( z- t4 q% h+ ]5 \1 F : N \* ]# O# g4 {$ }+ e SysFreeString(topicStr); ' E9 n5 A, _, R& T/ e$ N. k SysFreeString(itemStr);0 o% `) p% G4 r0 ], [+ H7 n
SysFreeString(valueStr); + h+ U) I/ m/ i3 b1 i; x/ @* }8 G, F; s& \
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？？？ # a% l7 ^) D+ q! 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？？？？ ! z7 B( Z# F- U# |* O' ?! w" {6 I9 M; V. _; U+ B( k
$ B& u. s0 U. }# I; `( A2.这是request的程序& \$ }* c S/ L
// Request a value from Extend 5 `" t, z( K/ z* O# F0 _; N8 b; q// " w5 K0 f) q- q6 M, ^3 q// Initialize the variant that will hold the BSTR. Set the variant's6 r# \" o8 m! [' `1 F% F
// type flag to indicate the fact that this variant holds a BSTR. Place the3 K9 o. s1 B9 Z. y& [
// BSTR into the variant structure.1 u2 z0 ~8 Z( c% y, I) I
: T* ~6 r- B& \6 y requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);' f1 y, q/ y% ~0 C' V& G
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 0 J: t% i' C$ E+ L9 c l VariantInit(&requestVariant[0]); 7 l% h8 P, L5 X, ?# n; D/ A
requestVariant[0].vt = VT_BSTR;/ T5 h& Y& Z/ \8 |6 S
requestVariant[0].bstrVal = itemStr; 6 Z# ^! ^: U2 L) v& n0 k, h8 P+ d: I: r: N) i7 v
topicStr = SysAllocString((WCHAR *) L"system");9 a# q# h" m# K
VariantInit(&requestVariant[1]); & d- Y, E+ W+ z b
requestVariant[1].vt = VT_BSTR; 3 [5 a/ J i0 V i requestVariant[1].bstrVal = topicStr; $ y! {# `( e% k! X" O* v3 T$ y1 ?9 t; l' `* ~
// Set the DISPPARAMS structure that holds the variant." I% }0 |3 h9 b9 j& I
8 |& W- \/ }6 n9 ~/ h
dp2.rgvarg = requestVariant; ! j8 o& A; O; B" v# T8 D" @ dp2.cArgs = 2; + z6 H6 A2 S ~9 `; p, S- D9 t dp2.rgdispidNamedArgs = NULL; ! |' y# I/ y' R; ^$ q dp2.cNamedArgs = 0; ! r1 i. P, v7 e$ m1 Q# z; p7 ^8 {
var.vt = VT_EMPTY; / k) |3 c% {0 M' U( K/ y7 G0 Y% g9 t9 Q r+ A( [6 B- B J0 x1 l. q" V/ }& {- H
// Call IDispatch::Invoke() 1 x! d7 g# A J! W- B6 V! J3 z, {4 {# u
hr = m_pDisp->Invoke( 3 ? h# [% G( T, C5 X requestID, * s1 U: }. J; u* B: Z0 ] IID_NULL,8 d7 V* j7 Z/ C" h8 G( ^ L1 _
LOCALE_SYSTEM_DEFAULT,' n% ?$ N0 F7 j4 Q/ i9 o
DISPATCH_METHOD,; d' B% G$ v, R% C
&dp2,# @$ ?7 i; w2 H, Z* O) I. _- O
&var, 7 ~; X$ `1 h! c. c8 v &ei, , s+ C& S$ I9 _: C( v8 d( y6 D &uiErr);' Z. Z K5 f! X/ b' m" \
发表于 2008-11-25 19:37:03
