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:2 V, o3 A1 K9 o, g- s
Name = (WCHAR *) L"Poke"; , X \* L0 o t( a r, \% n# @0 \ % {4 r) G6 o1 H( E- _; }
hr = m_pDisp->GetIDsOfNames (" }! A3 V. M \; X- }& V
IID_NULL, // reserved6 s$ r D: G. n' H0 c; T- G$ d
&Name, // Array of names to get IDs for- U* n4 i; P2 I) w6 L% C% o
1, // # of names in the array * k1 e* R' K- B9 J8 F LOCALE_SYSTEM_DEFAULT, // System locale2 f( \6 u& e* W
&pokeID); // Array of IDs to fill on output: i3 f1 @- Q6 W5 d3 o ~
! D0 n9 x8 ~+ \ if (hr)5 N* Z; _# r. x2 E6 E7 H
{ , p9 m" d+ G' k+ X MessageBox ("Get Poke Unsuccessful");, U$ p6 e1 j4 c& ^- ?& u
return;- h' V- ?0 ]& [$ T6 T! ^3 T: ~+ o
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/**************************传递数据给extend**************************************/3 T P' w# y0 R& ?3 R
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);9 k4 h: x# {$ g1 {
# b e. h% J# y valueStr = SysAllocString((WCHAR *) L"1232"); 7 T+ f/ z, C) N- p }% g) I$ r VariantInit(&pokeVariant[0]); 4 i- J" G& n& @
pokeVariant[0].vt = VT_BSTR; 7 N$ X( N( {' s pokeVariant[0].bstrVal = valueStr;3 @. {6 n! ?! ^/ e; ?
" F. J1 s* x# B// Set the DISPPARAMS structure that holds the variant.* B" ~- Y& S5 M- O: ^% P p
2 ?/ b6 f0 R# W {( H- b( X
dp.rgvarg = pokeVariant;( b) D5 I @' T8 E$ t3 P$ g
dp.cArgs = 3;. Z/ i# |0 `5 Z/ m0 E, M6 U. m9 {
dp.rgdispidNamedArgs = NULL;/ Y0 v J4 c, h- a/ L6 `
dp.cNamedArgs = 0; ( N' D) s4 ^0 J/ Q 7 e" ^* \1 l, t* N2 X" M7 H// Call IDispatch::Invoke() 8 w! C2 d" N% R3 f* v+ S5 T 1 _6 e) O' b" e0 W* d. G% b5 C hr = m_pDisp->Invoke(- A; n$ z! [* j+ }; a+ ]
pokeID,; B2 h/ ]. {3 `5 Z$ V
IID_NULL, 8 C# ~' e2 v) U% R# h LOCALE_SYSTEM_DEFAULT,* G; o- t+ ]; q; Z
DISPATCH_METHOD,* S& N, J' m8 |# R( \8 @: h6 `3 F
&dp, 1 c, F5 {0 w$ d2 Y! t NULL, 8 L! ?% f; h3 b5 R% q+ r &ei," m/ Y! P/ B4 I# k
&uiErr); ( ]+ R& h8 V8 `3 f# s ( @) f. B& }, A' L% A; u+ v# o SysFreeString(topicStr);1 k4 Z: v$ k; \7 T) d" ~! D; t
SysFreeString(itemStr);: D2 ?, R/ @' i
SysFreeString(valueStr); " P1 j2 z0 o* F% b% {5 G $ Z. x% s U% B& a1 |# \, 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??? 7 q4 a5 u! }3 D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???? 2 a2 T1 W) y; g! m- I& x2 s' }1 X* q# k! m
& L" y: f# R- ]2.这是request的程序 $ J( G, M4 h+ C5 k// Request a value from Extend( I! b) j8 v+ d3 @- k3 C
//' m( K7 R7 x" h/ V, {" Q
// Initialize the variant that will hold the BSTR. Set the variant's + f" \. a. u4 ~+ C/ T// type flag to indicate the fact that this variant holds a BSTR. Place the 9 ?9 `* n/ f4 U7 {+ v4 u// BSTR into the variant structure. R' C2 d/ y. }- X- w
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); \) N2 Z* z% e0 I
: p$ g( V9 _7 U3 p itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); . h/ p2 ?; N; X- D VariantInit(&requestVariant[0]); 3 n% Z( `( K) P
requestVariant[0].vt = VT_BSTR;5 T) {* L7 C0 J6 C. _- l4 X
requestVariant[0].bstrVal = itemStr; : m; d1 ~" o/ V) B 8 ~7 m, d: n3 f5 t: L# P topicStr = SysAllocString((WCHAR *) L"system"); * l$ ^% X+ K' h5 G. z' s- H) Q VariantInit(&requestVariant[1]); 8 C. E0 S. h' l; e2 C
requestVariant[1].vt = VT_BSTR; ( [ W, ~# Y* z$ x: o( g requestVariant[1].bstrVal = topicStr; * p2 B- F6 z! }3 Y! W, { 0 }0 z; J1 ^3 i8 T2 _' ]& Y4 Q// Set the DISPPARAMS structure that holds the variant.6 F) y8 t2 _ @% W! {
/ \0 F( M9 { S, T4 i6 l dp2.rgvarg = requestVariant; 2 G! p/ l9 {3 l9 S! t4 i7 E8 D8 v! V dp2.cArgs = 2;8 O6 {9 j5 y1 ]* D( ^" O* q3 O
dp2.rgdispidNamedArgs = NULL;0 f, G: I4 q2 e
dp2.cNamedArgs = 0; # S. h5 i* {# m& W. K) G3 w $ h9 Y, ]& e5 m) D var.vt = VT_EMPTY; % _, S/ w& R) t; r/ d4 X 2 v" q6 ~& |+ y// Call IDispatch::Invoke()7 ]' Q4 c( `+ O! H
9 m2 Q( ]( [) L' }& t hr = m_pDisp->Invoke(8 O* |9 X; R; N+ ^$ ^ f t
requestID,( u- ^4 p! Y5 I1 j" \
IID_NULL,* |$ i: O$ |, J/ b: o' S+ N
LOCALE_SYSTEM_DEFAULT, 0 X' ?1 c4 c5 O& [ DISPATCH_METHOD,* e% {3 _7 M8 d% ?7 m. E
&dp2, . R1 ]/ \1 p* f% a" A &var, ! m% G9 ?7 Z, @: U% W* F" c. q &ei,2 I$ t% V0 U+ e3 V
&uiErr); 8 U5 c0 R9 F- | 6 Q/ S- s# h5 I) E9 V SysFreeString(topicStr);1 a O9 y! a) H/ ^; Z
SysFreeString(itemStr); . f9 F& F) y. Z# a# q2 U9 E! F1 Y请问该程序是获得extend里面的哪个值?& O# M' q) C0 J" @9 o; Q G
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????