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: + A( P" k0 }; X3 F2 J8 {( SName = (WCHAR *) L"Poke";4 a7 a8 l2 U, s- A
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hr = m_pDisp->GetIDsOfNames ( 9 `! D0 T7 A* m( `0 G( `/ D IID_NULL, // reserved4 f) d/ z l7 N
&Name, // Array of names to get IDs for! E) [: e$ k6 C1 E! A
1, // # of names in the array" F- K O' i y% S3 N0 B
LOCALE_SYSTEM_DEFAULT, // System locale" I0 P5 Y3 T4 \. O! ~* z* n2 J
&pokeID); // Array of IDs to fill on output 2 B' h( K( ^0 q7 o {2 H0 @9 G9 |, b
if (hr)& M. N6 V0 u7 k0 A, M$ D
{ ! a4 C5 \4 w$ B2 T. p MessageBox ("Get Poke Unsuccessful"); ; }4 _7 G/ [3 S! R4 B1 ~* u+ c return; " m$ N+ o& W/ @3 M& x/ _' A } & [7 }$ O" e7 ?4 X0 I. w1 Q+ @1 k% H6 _2 `* ~# \
/**************************传递数据给extend**************************************/! P$ j! O" I) y+ d8 u/ C
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);7 s! H" D" u/ T( s
% @5 j: i! d7 A* s0 ]) J valueStr = SysAllocString((WCHAR *) L"1232"); 7 S) o1 Y- F4 c( d VariantInit(&pokeVariant[0]); $ i* [& N, u1 P, @# A pokeVariant[0].vt = VT_BSTR; . M7 k0 l- c# d v/ z4 z- t pokeVariant[0].bstrVal = valueStr;' @. n( _6 V& a
1 b) z2 E4 w: h& s9 k! b itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");2 {- _6 \& d" x2 p' B
VariantInit(&pokeVariant[1]); * J' W( O/ P' W. Y4 W
pokeVariant[1].vt = VT_BSTR;9 h2 q$ w; C2 P
pokeVariant[1].bstrVal = itemStr; / k! ], v& y8 U* T9 T2 b& L 7 X- W4 d3 v" |) r# m topicStr = SysAllocString((WCHAR *) L"system");0 ]3 K' Q2 g8 S
VariantInit(&pokeVariant[2]); 7 L7 B- P/ z0 b
pokeVariant[2].vt = VT_BSTR;( ^8 q- M+ W# m( `; L% {
pokeVariant[2].bstrVal = topicStr; , r, [& R" C0 t, Q4 a% V) r! `( E% J& q0 U- D2 {: f
// Set the DISPPARAMS structure that holds the variant.( Y1 a: J, d; c0 Y3 Y* ]+ c
2 r9 U7 G9 h4 l$ H' P! c dp.rgvarg = pokeVariant; # Q0 E% V# N7 w. F$ N8 c dp.cArgs = 3;* \; B- e. v) p/ x" n$ T3 q8 M
dp.rgdispidNamedArgs = NULL; : W t1 c4 Z C! G dp.cNamedArgs = 0;1 X/ `3 t8 _. t7 D5 ^2 V
2 T( g7 R% A1 E! P* c: n2 O# p// Call IDispatch::Invoke() R% a$ C- n, v) y7 h: W. `- B; q ] J' z- F6 g
hr = m_pDisp->Invoke(7 {/ n/ F! E0 w3 E
pokeID,6 z; ? O2 t7 H E; h
IID_NULL,: J2 Z6 u& h! N1 |3 r- p% S
LOCALE_SYSTEM_DEFAULT,6 p- A8 c0 q6 e. s9 X
DISPATCH_METHOD, 3 M4 u! r2 ]) A& C: C. R9 x' d4 d &dp, 1 k6 j: N. H& K8 V; }% C, [ NULL,9 t& m9 |. R N9 ]' p& i r: [, Q
&ei," f* X; p5 t5 \/ D' \4 {
&uiErr); 0 q2 G8 d' f. I, N0 {1 O7 g* ~. B' z' C
SysFreeString(topicStr);5 z, x' u, ?) d# `8 d; {. m9 C
SysFreeString(itemStr); " c; T" F6 h8 ^( F SysFreeString(valueStr); & `/ j1 k* ^% O, x, |2 |1 s9 N& ^$ n% g% E+ @
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???5 x) g, d! b9 w3 ~
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???? 9 a) U% P0 J5 g. G" R, j2 C7 Z/ }% k% W% G% n5 X, G
. C; ?& m$ h0 [- H8 X+ a5 u2.这是request的程序 : e7 ~: x: [# O( \# O( l5 P$ M+ W// Request a value from Extend0 Y1 ]9 K0 C7 ~2 X
//: R( g5 i p: S7 b1 Y
// Initialize the variant that will hold the BSTR. Set the variant's9 }2 r6 E- r( w# G( _
// type flag to indicate the fact that this variant holds a BSTR. Place the * O/ Q4 l7 x* Y: u5 q// BSTR into the variant structure.3 `2 X/ V( [, _0 ~
/ _, Y* b: D( i- D requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 9 j; S i- o4 V/ z ; K6 ]$ f4 Q* T+ b# R itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); - W6 F- @% F4 l# k) Q w+ m7 h VariantInit(&requestVariant[0]); : t8 B/ \) d' D0 \
requestVariant[0].vt = VT_BSTR;& j( @4 M1 v; ]! \. r
requestVariant[0].bstrVal = itemStr;' {3 `3 k+ D. F4 p
1 o; f9 |' u4 |& h% S, ?: k topicStr = SysAllocString((WCHAR *) L"system"); + [, a8 m- u0 `0 [ VariantInit(&requestVariant[1]); 3 ]2 g% V5 ~1 ~& T3 J
requestVariant[1].vt = VT_BSTR; : ]7 F& ?1 H& j requestVariant[1].bstrVal = topicStr;8 Z/ ?% n) ?9 Y) ~7 x& a
! ]2 @8 O* L6 d# C) \' V( o
// Set the DISPPARAMS structure that holds the variant.; C. F. h0 }! B& x4 A! a
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dp2.rgvarg = requestVariant; 2 g: ~2 {) y0 S7 L! C8 E: P( i dp2.cArgs = 2;' h& A2 [" I# t# }& \' Y
dp2.rgdispidNamedArgs = NULL; 9 d9 J$ V. t9 T5 M, S dp2.cNamedArgs = 0;$ S2 |, e5 L& R8 D
) w6 H& H& Z' ?( G- Y8 p var.vt = VT_EMPTY;/ p8 |( J8 o6 _# x/ d( K