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:" e$ i. r8 W* g: d, @; G/ V
Name = (WCHAR *) L"Poke";" y" E3 @3 M: d6 ~8 w
4 I* n8 C( E& v% E9 e8 K hr = m_pDisp->GetIDsOfNames ( 7 c6 r5 e( X1 Y, [- V IID_NULL, // reserved 2 o( J8 ^' @" I3 Y0 [ &Name, // Array of names to get IDs for % d+ q6 _; K- V7 K7 [4 l7 B% x 1, // # of names in the array 5 }) ?2 Y: G$ {2 W$ P' L( M LOCALE_SYSTEM_DEFAULT, // System locale( [- K! B& K4 q* h
&pokeID); // Array of IDs to fill on output* C2 _2 _. z& Y- I% m8 x. F
" h: f( S" q6 n1 w if (hr) ' b# F$ @6 q: Z3 P) b$ ]$ z! p( R {( N# a, ^5 a; A7 H2 C* _
MessageBox ("Get Poke Unsuccessful"); 0 O" \8 W" e* }/ z5 n+ ` return; % S8 J, w8 _3 k } ( N( \! b4 @3 O4 j) p. [5 |6 E n0 A! |2 h- U- r- m0 b- }8 p* s
/**************************传递数据给extend**************************************/8 o/ r& r2 [# C& k; B' F6 B
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ; \: |7 o ] ?% S - K& p. s9 J% i6 n' P& ? valueStr = SysAllocString((WCHAR *) L"1232"); # O/ Q0 b& j( z s K VariantInit(&pokeVariant[0]); 5 }3 }5 A( g7 r+ r% i
pokeVariant[0].vt = VT_BSTR; 2 J) |8 ]+ q+ @' o1 N pokeVariant[0].bstrVal = valueStr; . k* W7 x9 L3 D, `8 f & J; W E/ B* C% H/ h, W itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); @- O' n( m9 }: O& w VariantInit(&pokeVariant[1]); ' G7 o [5 i O- _- v( i | pokeVariant[1].vt = VT_BSTR;1 ^+ \0 i8 G) K7 r" N* v" x
pokeVariant[1].bstrVal = itemStr;: r5 N' I# h* \' y Z
+ z) @% g$ x" x' ~ topicStr = SysAllocString((WCHAR *) L"system");$ M! a0 j6 F7 s( x* y) N Y
VariantInit(&pokeVariant[2]); 8 m. N: X9 J1 K
pokeVariant[2].vt = VT_BSTR; " L# Z! }. X$ D0 W pokeVariant[2].bstrVal = topicStr;" w& i. z* ~3 M5 s6 |9 t+ V
! |$ l4 G# T# T7 K// Set the DISPPARAMS structure that holds the variant. 7 l$ H0 @+ h/ d$ S" n- ]% J ! Z+ _# v( Y6 l% \ dp.rgvarg = pokeVariant; : e2 S% {$ R3 j- s6 q4 H dp.cArgs = 3;, j) `, a0 ^' ]) Z& P& f
dp.rgdispidNamedArgs = NULL; : i# K" k7 _! g) ^2 m. C dp.cNamedArgs = 0;6 i" J9 k" H$ o: j4 ~
8 a8 _$ l6 z1 H8 [! s2.这是request的程序 2 a4 @% t1 b$ `// Request a value from Extend ( z3 }: A$ T, j0 X7 `2 k9 N D// " h2 C% a! Y; F m: ~3 G// Initialize the variant that will hold the BSTR. Set the variant's ( |3 `3 s0 Q7 a% z) ^% L! J c' K// type flag to indicate the fact that this variant holds a BSTR. Place the ; i% X+ U. P6 Y- r// BSTR into the variant structure.3 m8 j, t( j! O s" v% h
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);* V* g, g/ h$ J+ s4 x
) O& p" j8 c, S" Z% B0 i8 {4 W- b itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");- M7 x. a6 d4 r" K; u
VariantInit(&requestVariant[0]); 4 B) \; M0 O3 ?- o! q7 x
requestVariant[0].vt = VT_BSTR; ! n2 i' v, S. n) h) w' E5 u requestVariant[0].bstrVal = itemStr; : k% W% V; [( c+ M - y! n* F5 L6 e, \ topicStr = SysAllocString((WCHAR *) L"system"); ( n1 Z$ i1 j* _7 j! a2 ` VariantInit(&requestVariant[1]); ( u" q$ S7 G G2 Z3 E! |/ U: t/ u requestVariant[1].vt = VT_BSTR;; Q# M/ J) J ^1 h$ x) i- h/ {
requestVariant[1].bstrVal = topicStr; 1 f& B' [( o6 W: r; q$ i " p0 p& K8 k- j( w& I2 Z% ^7 Q: S7 o& ^// Set the DISPPARAMS structure that holds the variant.5 e$ k3 F' X( V* w7 S5 ?/ P
) s1 z! P `; |' Y1 g+ I M) ~ dp2.rgvarg = requestVariant;" n! h5 t) v8 b1 l
dp2.cArgs = 2;* g8 z8 C" Y7 b! \& k% j9 ]
dp2.rgdispidNamedArgs = NULL;% |* l% b; S# h1 x/ N, ~$ T
dp2.cNamedArgs = 0; 5 |+ \# ?* [/ e7 u" c; Y3 k 6 ^7 q1 Z+ o# s9 \5 Z* w; I. {+ N var.vt = VT_EMPTY;+ X! a- d" z! l T+ u, N
& L7 V; j0 |; x* Q( z O// Call IDispatch::Invoke()* D. X- Y d3 N8 _/ ^; z5 I0 Z
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hr = m_pDisp->Invoke( 7 b' p7 h" a. T, S: B requestID,/ c: j# ^. ]8 u `, v
IID_NULL, # C! M+ V7 h. [- n: `7 z LOCALE_SYSTEM_DEFAULT, + X+ k; R% t- v DISPATCH_METHOD, 4 T/ G0 b& d g0 {4 U* t &dp2,: _4 w9 d4 e6 M6 ~/ N
&var, . k" X9 S& k4 ^6 k3 ?! X1 Q &ei, 6 A0 r. T; G6 S+ O2 h1 b &uiErr); . p3 _, n& ?: i9 e. Q ( M" f; Z5 m) E) G. H SysFreeString(topicStr); , Z; b- r& f- C SysFreeString(itemStr);# a& h+ n# ^; X/ c
请问该程序是获得extend里面的哪个值? 9 S. U& Z+ I7 f0 R( ^; J) R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????