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: ; ]& B+ f" h! x' `; KName = (WCHAR *) L"Poke"; 6 R. V; r/ r8 d- X* n : f V5 y9 W9 a2 P2 x2 ]
hr = m_pDisp->GetIDsOfNames (" g8 p3 A+ Q* _' s' d2 V$ w! k% F
IID_NULL, // reserved * X7 M. i( [3 i4 y1 x0 O &Name, // Array of names to get IDs for + i# Z4 `* `- e( r8 s* F( Y 1, // # of names in the array " S8 ]0 d8 T- e4 f8 B4 K3 G LOCALE_SYSTEM_DEFAULT, // System locale . `3 d5 \. n k. p" H: |1 Q &pokeID); // Array of IDs to fill on output9 R6 u# m' P& F$ h; t
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if (hr)" W* j) w. e7 t2 T) H' y: i( d
{ ) v# h& [& {6 \+ }7 }5 J MessageBox ("Get Poke Unsuccessful"); ) F% q( k, k6 M) J0 Q( h" J return;' S) R5 M' u( {( U2 p, H0 t
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0 N$ \" u) q. T a3 q/**************************传递数据给extend**************************************/' p$ w# C( J+ v
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);, r$ Z4 Q3 O1 T, L6 M. P
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valueStr = SysAllocString((WCHAR *) L"1232"); + T% s7 A; `# i. n! X$ e% Y$ k VariantInit(&pokeVariant[0]); & b/ r$ B- L2 e pokeVariant[0].vt = VT_BSTR; ( m/ j) A- M& R, X+ C5 b$ I" S pokeVariant[0].bstrVal = valueStr;& f* _" b( w: ?) K P. C$ S/ u
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 3 w( o# j! d+ z7 W7 P6 S% N- o VariantInit(&pokeVariant[1]); 0 u. n8 f7 Q0 r n! w! S pokeVariant[1].vt = VT_BSTR;! v* M" {3 k( y O; O
pokeVariant[1].bstrVal = itemStr; 6 @- b2 q9 G) J# E . R8 }6 N" e" Y* h9 b) Z* O) k topicStr = SysAllocString((WCHAR *) L"system"); f5 E; r7 h) E/ R
VariantInit(&pokeVariant[2]); ( d: t. B$ \$ ?& i" k+ e
pokeVariant[2].vt = VT_BSTR; / ~. e5 h4 k2 g# q7 u5 n pokeVariant[2].bstrVal = topicStr;6 g A8 t# l! P: G" M: s3 k$ ^
" J1 k* R+ B- |) ~// Set the DISPPARAMS structure that holds the variant. ) W, b ?3 |! n) F$ D0 P5 |9 \! w3 m6 v. |! t7 ? ?+ S. V6 z
dp.rgvarg = pokeVariant;' T' N+ h6 T1 o
dp.cArgs = 3;& @9 ^! K$ M( }: y
dp.rgdispidNamedArgs = NULL;2 ^8 q; ]" h3 g3 ~9 _: ~+ C
dp.cNamedArgs = 0; % q3 S, w- g/ x' ^1 ~; F" S* s& Y7 a( O
// Call IDispatch::Invoke() ( t( s! p$ a& X7 ~4 C, S ]* Z( F- d
hr = m_pDisp->Invoke(4 e2 `9 T6 }/ G& W% P5 e* ?
pokeID,( U' w5 H' a+ m5 c+ K4 n
IID_NULL,% }2 {6 J- s* ^
LOCALE_SYSTEM_DEFAULT, ) Q5 a* z u0 u6 { DISPATCH_METHOD, % B: E G# e' m" n' ` &dp,/ a8 y; ], @3 j) z i* f
NULL,) q* h/ S9 h. _4 n7 @
&ei,3 P3 T5 _" T$ p0 P2 D( L' }" O
&uiErr); 7 O9 P9 \' V5 @ m3 o1 ]1 }7 {! g" q
SysFreeString(topicStr); 4 s& {' T/ s0 U$ G# W SysFreeString(itemStr);1 U4 K" Z* I8 z0 x: {# z
SysFreeString(valueStr);$ h8 t4 u7 d1 ^: o
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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???0 _4 O3 y8 \4 s: M
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???? 6 H. [' b0 u9 G& m4 @. Q# r7 P. ?! n/ S. M3 l y$ k1 N2 f' }5 `
@+ o( {) ?1 X, b2.这是request的程序 % m, E% ~) m/ H) V$ O7 p! D, S% s// Request a value from Extend( I) U- E9 J* F3 V/ m* k% u$ s
//, ~( E( R8 E' T+ z
// Initialize the variant that will hold the BSTR. Set the variant's - t# v G0 a: c// type flag to indicate the fact that this variant holds a BSTR. Place the: p8 n( _& B- h
// BSTR into the variant structure.% n" v+ O. W% N' f8 V0 k# y: d
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);( u; J H$ u, U) i9 @
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 3 Q1 T1 x, P9 f VariantInit(&requestVariant[0]); * l2 X2 `/ B) y: A. ]" b requestVariant[0].vt = VT_BSTR;8 ~* L/ j; [4 L5 t6 [, E0 Y
requestVariant[0].bstrVal = itemStr;2 k$ @' W+ F3 j7 L
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topicStr = SysAllocString((WCHAR *) L"system");( b# @. A* d. k. j; Q! J5 l
VariantInit(&requestVariant[1]); ( A! C9 _% @# m# d! N: U2 X t requestVariant[1].vt = VT_BSTR;9 V6 S# g' j# T2 C
requestVariant[1].bstrVal = topicStr; 0 M/ N% |. l0 O5 m$ Q* C+ U) _5 p2 K$ s3 H. S0 Y
// Set the DISPPARAMS structure that holds the variant. 3 M. [, a; U" u8 E( L/ Y+ x- N8 ~) D0 q! H" t3 e
dp2.rgvarg = requestVariant; . t( m I% A8 V7 L5 J( n dp2.cArgs = 2; # k# p+ u/ D( D- F dp2.rgdispidNamedArgs = NULL;% x& a. P# a" U/ ^! r
dp2.cNamedArgs = 0;! [4 a' C* p2 e, p; a
. M1 V. T+ b1 C4 x var.vt = VT_EMPTY;' P7 ?+ r6 p: X9 d1 e
5 k3 A- j/ G4 g R5 w// Call IDispatch::Invoke() ( N2 Q5 [7 N! [7 G U2 Y 1 ~% N0 c; D6 I! ? hr = m_pDisp->Invoke( ( q, C! b0 _7 z; z. \ requestID, . W% v# |. X4 K6 r IID_NULL, , Y' v9 \$ G- @' D LOCALE_SYSTEM_DEFAULT, , I+ H' f* ]# |/ [ DISPATCH_METHOD,: h. r$ I" g: H& u
&dp2, $ q# y5 U% h" A& C6 P &var, 8 g1 w' N9 v$ D! D& r' q &ei, 2 q1 W/ i, L0 C& y) P &uiErr); ) _. G2 N. v0 U* ^7 [4 X, a$ f: ]6 B7 O6 m' d/ }6 U) u6 [0 V
SysFreeString(topicStr);/ L7 M4 z/ `' b: A9 V' R1 c. w
SysFreeString(itemStr);1 i2 W* k$ D- b0 d c
请问该程序是获得extend里面的哪个值? / ~, f! ]6 b; \& [- @+ u0 o4 V; V1 l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????