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: $ U! [0 b! z5 W" E3 {! EName = (WCHAR *) L"Poke"; . O, r3 A9 D/ g* A. n0 \, L0 a0 u% M 2 ~+ p4 r! |! t* q% B! J% f. L# N
hr = m_pDisp->GetIDsOfNames (5 B3 T" \: Q% E! U( A9 U# e
IID_NULL, // reserved- W( }: p; o& n7 m
&Name, // Array of names to get IDs for ( b/ N+ s: F' b! M3 f 1, // # of names in the array 6 o3 ]- R1 u. l0 j! {7 y& U0 M LOCALE_SYSTEM_DEFAULT, // System locale 3 ?* q" x5 g" Y! e9 V &pokeID); // Array of IDs to fill on output h+ C% V- H& e/ @0 f
/ A' ~" z: k$ n* Q4 S0 Y, w if (hr): r5 G; R/ |) H+ i; @6 b. K; ~5 V1 \
{& z+ w$ o2 C7 m+ Q* H
MessageBox ("Get Poke Unsuccessful"); ! q3 E) C# r6 | return; & o' [* `1 a8 ~9 Q# \4 }+ X } + m/ ^ r+ e( L" T; Y0 n 5 Y. H: v% q6 f% Z! O! N, [; k1 m/**************************传递数据给extend**************************************/ 1 }; U/ I+ T: N pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); - p7 A. A, Y: w; t5 ~) I 6 v+ P, n0 H. l
valueStr = SysAllocString((WCHAR *) L"1232");+ r( u# c! K( {
VariantInit(&pokeVariant[0]); 1 O: b4 f- W8 P& z1 \1 H
pokeVariant[0].vt = VT_BSTR; % L( A/ g E2 U5 G7 r pokeVariant[0].bstrVal = valueStr; 2 i" P; ^# r8 L/ ~* C5 Y- w7 [* |# Y! G9 W
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");% @! O# v$ Y/ h$ [/ P: ]
VariantInit(&pokeVariant[1]); " [& ?; U5 F @4 E) R, L
pokeVariant[1].vt = VT_BSTR;( R5 d, X: Y, V& k1 l6 N
pokeVariant[1].bstrVal = itemStr;( t/ j8 ^7 M; a. L4 |# Q6 I, I
# \. A ~ @/ L+ A8 e, ~$ Z8 I topicStr = SysAllocString((WCHAR *) L"system");$ ~. X! y, r/ N
VariantInit(&pokeVariant[2]); ( U/ ^% V$ |( L# C pokeVariant[2].vt = VT_BSTR;8 ^4 o q+ N! J7 v8 t8 }8 U' v
pokeVariant[2].bstrVal = topicStr;+ _7 q2 \/ o2 ^" h* ?% C# J
+ |, `5 ~ M" y1 k// Set the DISPPARAMS structure that holds the variant." L3 w7 A6 [& F, u
+ _9 m, a. p/ E' Q" P9 V, a' l dp.rgvarg = pokeVariant;3 W* s- m" x* c( { j) m: n
dp.cArgs = 3; / y; v: ]" j0 T' q8 J5 h6 N4 v4 ^ dp.rgdispidNamedArgs = NULL;6 W3 c1 m5 C" O7 P4 P# J5 b6 F1 C
dp.cNamedArgs = 0; 7 r1 ?# g( l, D1 O; V ' W. Y& q) w1 z8 G1 R; E// Call IDispatch::Invoke(); y& b- V* y) D) p a
1 S3 V, ?3 A# t* o$ b hr = m_pDisp->Invoke( . E) U) z% F# ]" W3 P pokeID," ~( N A$ ^, F1 Z6 R$ }. J. Z% C- l
IID_NULL,' F: ?. _% ~4 c' Q3 \( M
LOCALE_SYSTEM_DEFAULT,& s5 T! G6 P3 @/ q8 c I( X7 U3 m1 I
DISPATCH_METHOD, + d: _3 N% O) m i& p &dp, . s0 {% O$ Q' |3 r) E NULL, 0 p# c# y: _+ p: Q; f" l# z &ei, / x( k1 n; q6 m- E% r2 b. }2 F2 @ &uiErr); 2 }# ?5 g! `$ i, _) ^ D2 d3 |/ m6 w
SysFreeString(topicStr); - E4 q; C& I1 n% t+ n2 G8 B9 a SysFreeString(itemStr); 8 ?2 E" j+ ]( n0 ?0 @1 O' O1 j' L7 p SysFreeString(valueStr); , H- i/ c6 ~" C1 L6 U+ }, `( b* d5 ?! T ; m/ S S. g; G" }0 R5 `9 ^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???. o1 X; D" n2 G4 L' t7 b
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????7 \1 W2 |* P) L! k* ^) q
& [/ {2 I$ F" t3 X1 q0 F* W# H7 ^. J! r% [
2.这是request的程序 % W( D7 [5 C4 y5 B0 I3 `& M2 M$ p// Request a value from Extend- N. j3 { T3 J
// * X! L2 a+ a; a! M X8 M( q$ s3 R( h// Initialize the variant that will hold the BSTR. Set the variant's* S8 \1 [# @4 d& t! ]2 i
// type flag to indicate the fact that this variant holds a BSTR. Place the + |; A8 u4 ?5 u& u' f4 g: h9 U// BSTR into the variant structure. ' i% ^3 w# W. c9 M9 |3 a. \ ; j0 E( D5 K1 u requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);7 L" U# M I/ N( U
: c. b4 d3 v/ D itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 9 O" m8 n3 L8 B. C9 R0 {, X3 o VariantInit(&requestVariant[0]); ; P$ X1 m* `* x1 U. r. s
requestVariant[0].vt = VT_BSTR;+ \( Q8 m2 H8 T
requestVariant[0].bstrVal = itemStr;2 v2 g/ ?- h7 v
$ p) H0 N4 y# [( `9 R
topicStr = SysAllocString((WCHAR *) L"system"); 0 T0 Y3 M* L2 ?; G- x* y. y) Y VariantInit(&requestVariant[1]); - m7 Z6 e) \ Q; E% { requestVariant[1].vt = VT_BSTR;' H5 h0 \4 m$ E+ b3 ]! h
requestVariant[1].bstrVal = topicStr;/ q' e& ~$ _: }" i
$ |( s# u! g ?! z8 s3 u
// Set the DISPPARAMS structure that holds the variant. 2 ^7 V% H2 K+ f; Z 8 u* t/ F0 e3 `% j s2 D) D# f dp2.rgvarg = requestVariant;8 d- L: {2 R- l8 n% @# w( w
dp2.cArgs = 2; ; ?) a+ N/ g/ S! [& p- E: H& G dp2.rgdispidNamedArgs = NULL; B' }5 Z$ M! }, Q4 Y* a% L# A3 s dp2.cNamedArgs = 0;0 C. m0 {, w/ Q) T; x/ g
0 F$ \6 I# I m4 R# y/ s p
var.vt = VT_EMPTY; . H. D5 l; ^1 |3 z$ v - f. m9 Q7 U, N. Q+ I5 _// Call IDispatch::Invoke()0 L7 L" f9 K# W) \! {# L
, o b( J2 M' j. Z. Y( w* P& @
hr = m_pDisp->Invoke(' A$ s8 Q& e* t W/ G. L
requestID, , ]: H. l. O/ t" x9 W8 Q' v IID_NULL, : ~% d7 W* C4 Z LOCALE_SYSTEM_DEFAULT,! P& Z9 U: N# M; s
DISPATCH_METHOD, ) {) r7 Q3 D" Y3 [ &dp2,0 ~ R! ^1 c) O. e2 M& d
&var, ! `5 }2 x; W7 f9 J &ei,) W: m O e7 I# k
&uiErr);) H u+ h7 _' s& h; `1 h8 d
% U+ ` ~: I9 C3 ]/ {
SysFreeString(topicStr); & x* Y& G- Q7 E' Z% _ SysFreeString(itemStr);; |5 a3 U# h2 c3 k4 C! H1 v
请问该程序是获得extend里面的哪个值?% h; I5 s8 B5 h1 `
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????