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：7 v. ?3 z# O/ w b
Name = (WCHAR *) L"Poke"; 4 _! \" r- n/ a+ d* l # C, h( l, |3 k' S( e+ j" D0 h hr = m_pDisp->GetIDsOfNames ( ! P& o8 z: L0 R, ] IID_NULL, // reserved 5 R B, k8 q7 a X! y0 e. J &Name, // Array of names to get IDs for9 u# g) _$ ]; w; `7 P& I
1, // # of names in the array 3 y' D. y4 E4 Z, E6 j9 L LOCALE_SYSTEM_DEFAULT, // System locale. m1 L5 r+ u5 K
&pokeID); // Array of IDs to fill on output8 ^- |- X4 i) D
+ X1 n3 g8 \$ A N if (hr), e; m ^1 q, g7 S
{ ' P, i. p) C& K% B% g MessageBox ("Get Poke Unsuccessful"); 6 s% K1 m4 m! t. U8 _# u# ` R return; 0 T# t4 R. q) m* B5 q2 f( w }9 n0 s: L9 P1 |5 E3 Q
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/**************************传递数据给extend**************************************/9 n2 E5 w( k$ n& [5 v! a
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); . P. U# ^5 X) `- ~3 C+ Q" D+ Y 9 g R1 u$ Q1 }( G4 v; N
valueStr = SysAllocString((WCHAR *) L"1232");0 `7 U. \# H' M4 Y( D
VariantInit(&pokeVariant[0]); 5 J0 A5 P$ Q& g' V/ z) l/ I pokeVariant[0].vt = VT_BSTR;; a4 q# L; x: O4 F
pokeVariant[0].bstrVal = valueStr;6 E3 m" W. S2 K/ o! m) c m, b3 I* R
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ( V( d |" }( j$ i4 U0 U. D VariantInit(&pokeVariant[1]); ) m$ h2 `6 a0 i X2 h8 W8 E2 [6 y* C
pokeVariant[1].vt = VT_BSTR; - w Y; S# u. w" A* g pokeVariant[1].bstrVal = itemStr; 0 Y7 P( s. `4 o; x% i+ P4 k5 L+ j - q7 a/ c% x7 |4 B- K5 U1 p0 x' e topicStr = SysAllocString((WCHAR *) L"system");- C' F) m9 K! x* j5 M2 N% }7 @
VariantInit(&pokeVariant[2]); 0 X+ r8 n7 R; J9 F- ?- J* ]
pokeVariant[2].vt = VT_BSTR; 1 y/ l0 j, N9 G7 K4 q pokeVariant[2].bstrVal = topicStr; 3 s* Q+ c% ?; A, y/ ]$ x 2 R/ h9 P8 F+ b5 M; p8 `// Set the DISPPARAMS structure that holds the variant. / I3 ~# F" L2 q. F+ _+ C+ m, M9 |! H! R# `
dp.rgvarg = pokeVariant;8 P# F; }& e6 ?4 P0 q
dp.cArgs = 3;) ]; {% }: Z" z9 n; {* k1 Z
dp.rgdispidNamedArgs = NULL; ; k* b& l" G7 N! x dp.cNamedArgs = 0;; h: a0 g# d; J0 A; O9 S
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// Call IDispatch::Invoke() 2 [' [4 W2 G' I; m% D" ~5 p0 [: c4 F9 W3 ^* L
hr = m_pDisp->Invoke(* e' f( {' [, W! `! ~0 t- V
pokeID,5 Y5 Y+ Y2 ]; B; L* p4 [
IID_NULL, ! v2 U$ ?& A K0 f( ^ LOCALE_SYSTEM_DEFAULT, 4 c5 W/ H% F) R3 F0 e DISPATCH_METHOD,; W0 M8 O4 {9 \9 J0 q
&dp,6 E( z$ m" G. W1 _- k! G% h1 q
NULL, 5 ]/ Q! }" U( m% ?9 G2 f &ei, ' K/ a! b' ^+ ^5 r4 f# D4 W2 c* Z &uiErr); ; i% d3 G6 g7 C0 g; m1 m, e2 I: \2 n% z( {; ?: m; Q
SysFreeString(topicStr); : e8 I% M# R! h2 Y+ P SysFreeString(itemStr); G3 L) ]9 }4 f% `5 z# o+ o
SysFreeString(valueStr);' L% P N. r# H7 h r
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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？？？# @9 L+ C: C' A2 P+ d: ^. s R
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？？？？ 4 ^9 Y$ p% O+ ~9 H2 E. l7 { # c& E6 N& ^- \9 `7 s 0 A6 \* q% O0 s( N1 [& Q2.这是request的程序$ j; d' o& @8 h
// Request a value from Extend $ O u$ e8 k3 X1 X+ Z9 _4 p// * k: Z w9 Q: q& N) ]- ` H// Initialize the variant that will hold the BSTR. Set the variant's- M- j' N e( {' }# E9 H
// type flag to indicate the fact that this variant holds a BSTR. Place the % b, B. h# G7 X0 l1 D5 l// BSTR into the variant structure.2 T* e5 K3 h9 ]* a& F
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);6 R& I S) A7 _
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");( N9 w+ X* {8 P) A
VariantInit(&requestVariant[0]); 6 {- A4 G/ F' P5 c) B2 ?
requestVariant[0].vt = VT_BSTR; ) Y( F1 B" I/ n# u, \3 z5 G, O requestVariant[0].bstrVal = itemStr; 3 S2 U# b8 ?) u6 d0 f+ j; b: D5 x( Z8 V* {) m; q9 F0 c0 U
topicStr = SysAllocString((WCHAR *) L"system"); T- o( \1 f/ c# x& V
VariantInit(&requestVariant[1]); / [/ X1 H. h8 u# R requestVariant[1].vt = VT_BSTR; " F% A8 v( J! _5 w! A) {0 y9 j requestVariant[1].bstrVal = topicStr;6 C" Q! w# i S5 U$ c
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// Set the DISPPARAMS structure that holds the variant.# P$ d- }$ U7 @2 O& g
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dp2.rgvarg = requestVariant;2 ^, J6 E" m2 C: V
dp2.cArgs = 2;, ?- w# Q4 _$ D$ T. S
dp2.rgdispidNamedArgs = NULL; s( }" L2 r9 q
dp2.cNamedArgs = 0; $ H2 W! T) ^' y; H+ y5 c, f f! f6 W* N, i8 n/ t) Y2 m! V
var.vt = VT_EMPTY;8 W7 H# X! ^% B) [
& i8 L8 b4 \3 B8 T5 g// Call IDispatch::Invoke() % E1 A3 L& [/ X1 _! g% x D ' I, z" }' {5 e) @ hr = m_pDisp->Invoke( ( \9 e( n' _4 ?4 G! N requestID,& R& e5 K5 W! f
IID_NULL,$ _1 P; d6 e3 U4 _7 Y9 t
LOCALE_SYSTEM_DEFAULT,- f, M( y& d N4 P
DISPATCH_METHOD,: t6 E+ ~1 V ?0 k
&dp2,) p, V$ C7 t1 a! y5 O
&var, + N y' ? B6 ]% i0 D+ s8 o &ei, j. ]5 U+ ?" F" M &uiErr); 3 \" R4 K5 o; r5 P7 C( u + @3 Z2 {9 p4 h: r SysFreeString(topicStr); ' ]) W: w3 d6 Q) O SysFreeString(itemStr);4 _6 m0 L% v' m M2 x
请问该程序是获得extend里面的哪个值？ # l8 P# }* a x2 g4 p8 t. H6 N# e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？？？？
发表于 2008-11-25 19:37:03
