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: ) p$ Z5 K: ?% V+ G2 sName = (WCHAR *) L"Poke"; * |/ u5 P+ u8 j! j2 F, s2 s ! u9 G0 X4 C. j2 x/ y hr = m_pDisp->GetIDsOfNames ( . J, X0 M5 X3 J7 j: r7 J) O0 k$ c) l0 T IID_NULL, // reserved % l# R: E3 j$ O &Name, // Array of names to get IDs for ( h- h4 E& \/ f! v( Y' F h 1, // # of names in the array3 j. c* X: x/ M* D; A' `
LOCALE_SYSTEM_DEFAULT, // System locale ; M: \, ~+ D6 Z# k &pokeID); // Array of IDs to fill on output& y5 w( A" l+ k; Q7 q& N1 h
& e; H' M- W. H$ z2 [; ` if (hr) [; z9 g9 v" Y) L
{ * o! T0 z7 G9 g% {% j6 ~0 e! J; ? MessageBox ("Get Poke Unsuccessful"); 3 n4 \" D! a1 ]) N Z, h& d9 n6 V& N return; ! s, u. n9 K( ] }4 c: j+ r+ {: H' z" b$ l( Y# u ?
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/**************************传递数据给extend**************************************// F! M2 q- F0 Y, F
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);; i- b8 X; p" j# h
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valueStr = SysAllocString((WCHAR *) L"1232");8 b' r( ]# z: [
VariantInit(&pokeVariant[0]); 0 _, ?! }: U; y$ ^1 E- e' h
pokeVariant[0].vt = VT_BSTR;( u* |- K4 a( }7 B( @8 C
pokeVariant[0].bstrVal = valueStr; - v8 S T- M2 c7 X5 ]4 l& r4 K3 D/ M4 B. G3 O4 k+ h
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");5 C1 D$ E4 [3 J, W! y
VariantInit(&pokeVariant[1]); 3 p% C0 \1 M, K0 G4 q u pokeVariant[1].vt = VT_BSTR; 5 C- c- P" L0 v. x$ E) B0 ^- F; v pokeVariant[1].bstrVal = itemStr;1 g9 O) u2 ~( O2 m2 V3 F/ I
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topicStr = SysAllocString((WCHAR *) L"system"); : g9 K: E0 e$ j VariantInit(&pokeVariant[2]); * Y# j! Z) w5 C) e7 U! ]0 j pokeVariant[2].vt = VT_BSTR; ; f5 Z9 ]$ T7 |5 B0 [ pokeVariant[2].bstrVal = topicStr;9 `2 l0 n, H7 u$ T+ X5 R1 ~5 N8 M5 w
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// Set the DISPPARAMS structure that holds the variant.9 n9 Q& R* H7 K/ G- y
+ I Y }! r" r& \$ ~ dp.rgvarg = pokeVariant; 5 O+ v) [0 q: W- g4 l- p% H dp.cArgs = 3; 5 p% r) {( R" X& t' S dp.rgdispidNamedArgs = NULL;# ~* P0 S9 _- F- S
dp.cNamedArgs = 0; 6 W0 n2 I5 ~5 q7 E ; v+ ^. Z" ~, y( n// Call IDispatch::Invoke()! Y0 K. z0 ]# w% A
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hr = m_pDisp->Invoke( # {! ]2 ^6 s5 C& |) C pokeID,, G! ]/ {4 M: d! Z' c4 \( S
IID_NULL, % z0 z X+ L7 r. R" N LOCALE_SYSTEM_DEFAULT,$ u8 {3 [/ v+ f3 f# F7 z
DISPATCH_METHOD,. s# `* U, H% c! C: `
&dp, - y0 ^% z; p, r5 e NULL,) K4 D5 @; S+ _0 a8 g7 h. G
&ei,3 q* U; ?2 d8 w4 a2 _' \9 j
&uiErr); ; |% P" i p- n5 T5 J7 I5 K" c5 Y6 r5 Q4 e, j" _9 T1 B1 R+ {) K
SysFreeString(topicStr); ! @; }9 |8 L" \ N7 l SysFreeString(itemStr); , ]/ Q& w w& ? SysFreeString(valueStr);4 J, C; A) K" E9 j) ?4 k
6 H5 S1 z3 {1 m& a1 a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???$ y- B& Q Y6 L/ l0 K# r* `3 M. 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???? ( n4 u& O0 @7 r! p [ , h2 S( b4 y6 j$ J + ?1 ] ^ m0 B; p2.这是request的程序9 R, C* b) G) j
// Request a value from Extend$ ^; u( Y$ @! W1 b' U
// . |/ T" L3 N" F3 C# k2 b& v% A9 D8 e// Initialize the variant that will hold the BSTR. Set the variant's. ]7 u; ?: y$ G: n
// type flag to indicate the fact that this variant holds a BSTR. Place the + s4 _$ U6 P/ `9 l9 j) j3 u// BSTR into the variant structure.- v" Y+ n% Q* `5 k8 H) n* _ o; G2 o
# f" i& m2 D$ N: I* m3 u requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);( i2 V* H2 j2 g& Q; K3 W/ t4 ^
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");$ H9 r+ J7 j' p4 F4 }
VariantInit(&requestVariant[0]); & V' b9 U1 N" q- u requestVariant[0].vt = VT_BSTR;4 O: }1 P& P) s% _2 Z1 K ~% [
requestVariant[0].bstrVal = itemStr; % r7 k8 D z# |- A4 {' ` : r& f1 G4 J' c7 {( d2 [& e topicStr = SysAllocString((WCHAR *) L"system");$ b& Q+ h' h+ m
VariantInit(&requestVariant[1]); 2 K: a. w C5 X& f0 j
requestVariant[1].vt = VT_BSTR; 8 d5 \5 J2 K/ y8 O, x- l* c requestVariant[1].bstrVal = topicStr;; ]9 _" T& w/ B' N1 P$ T* ^
1 N) y7 j) Y' P$ x5 K// Set the DISPPARAMS structure that holds the variant. 0 e( [. V) s3 o# ] q Q1 x2 l9 m) @1 X ( [: ?6 a" t8 S( Y6 R dp2.rgvarg = requestVariant; 2 P" w9 ?' Q, Y$ q dp2.cArgs = 2;+ e+ o/ u, v& |3 H7 V V
dp2.rgdispidNamedArgs = NULL; * y8 m) Y+ O+ ] dp2.cNamedArgs = 0;/ w4 F" w N, @
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var.vt = VT_EMPTY;* ~* ^9 Y1 Q& m5 E' H- {
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// Call IDispatch::Invoke() ' Q2 X* J' P" F0 e7 y L ) W8 F" t. @9 p/ O$ J t* O hr = m_pDisp->Invoke(2 A. s5 F2 L) u9 M
requestID, - {- S' F8 h5 j. s IID_NULL, " ]: k9 q0 K1 G# ?, e LOCALE_SYSTEM_DEFAULT, ) \4 |7 i0 y: j! R' | DISPATCH_METHOD, ( E( U# U4 }1 C0 H- S &dp2,+ u5 R' }# F |4 N
&var, * v7 @$ L' X. V9 L4 N/ a &ei, 9 `" p- e" F$ M1 `" j3 i3 B8 \ &uiErr);2 J9 k% K$ S8 j; D# ~" Q: H' T7 f# Z3 }
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SysFreeString(topicStr); 8 E, _5 Z) z1 N SysFreeString(itemStr);1 k7 r4 r# I' f) F/ @5 I# O
请问该程序是获得extend里面的哪个值? # W. T" G6 {$ B" N, }2 A/ U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????