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:( ~- R( M) E3 f7 T
Name = (WCHAR *) L"Poke"; / U% K$ I9 g7 p/ b! i $ t7 p0 U% ^) G9 t* S
hr = m_pDisp->GetIDsOfNames (- h% ~1 P3 L/ ]6 }
IID_NULL, // reserved $ w* T* C' j w8 Y+ b. g1 X3 L &Name, // Array of names to get IDs for 5 H# M9 v4 d v& l6 @$ U, M 1, // # of names in the array " F: m+ W7 p4 ^/ n8 _, s LOCALE_SYSTEM_DEFAULT, // System locale: d5 |& t& i+ g* ^) \. ^4 f, z1 u
&pokeID); // Array of IDs to fill on output8 Y* U) r( Z" e( D' B
! m% I* B! g4 R+ Z! V if (hr) 2 g. K) `: S Q# w5 h$ n" J t { $ N9 Q) g2 c- \ MessageBox ("Get Poke Unsuccessful"); " b. A- s3 N. d3 X return; 9 F$ N4 g: F& k N+ ~ } ' ~" h x, r E' Q2 ?9 A- F+ E; j! l; X& Q: D; f* [
/**************************传递数据给extend**************************************/; f, e8 F% e: M
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); / K- V. l3 O1 _+ s% P5 E# ], q ! Z/ p9 q+ V7 {6 A valueStr = SysAllocString((WCHAR *) L"1232"); ' C( I" |1 i" `% R+ a VariantInit(&pokeVariant[0]); * T( G( M+ v& F' [1 C7 b& m) `2 q2 S pokeVariant[0].vt = VT_BSTR;* V- `* e, q: Y* i& V4 |
pokeVariant[0].bstrVal = valueStr; - B1 q. V$ T2 I: x8 _( B' ?1 B% m/ N9 a1 P
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ! Z+ @( M6 {4 ?7 d, }2 V VariantInit(&pokeVariant[1]); / b. [! g* \% S* r; @% ?1 `: z0 Q
pokeVariant[1].vt = VT_BSTR; 6 N. `3 ?9 b7 i8 u# X pokeVariant[1].bstrVal = itemStr;5 j+ j! N& a2 p9 e4 k* N3 r7 m
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topicStr = SysAllocString((WCHAR *) L"system"); " j* K( C0 K6 U" Y VariantInit(&pokeVariant[2]); 5 `: i( g! p9 }1 E pokeVariant[2].vt = VT_BSTR;, F- w9 k, q9 x
pokeVariant[2].bstrVal = topicStr;, ` l4 w7 K' f$ E: Y. p
2 b1 n, r2 l9 H! s0 f3 C// Set the DISPPARAMS structure that holds the variant. 4 T* n0 J0 c* A$ U3 Z, b5 L a: v4 D2 y& S5 x
dp.rgvarg = pokeVariant; , s; N* U' X1 K- r) g& _8 H8 N2 n dp.cArgs = 3;. |0 H, [! x$ u' N
dp.rgdispidNamedArgs = NULL;# a; w+ n4 m6 f
dp.cNamedArgs = 0;. l/ a9 U$ F5 W& I; B$ [2 Q" m% d
; ~3 Z4 |) U7 @3 _5 [) J9 q// Call IDispatch::Invoke() 1 k1 p# U3 C' t, w3 V3 { 3 P; p, d' h5 @0 c& E1 ?8 q* Z- I hr = m_pDisp->Invoke( + L8 T' [4 n! E- _9 E pokeID,) `; m9 W9 f- F! W7 K& [! z
IID_NULL, 8 l: {1 _5 a; t3 ~$ b' F LOCALE_SYSTEM_DEFAULT, ! y) e! @; ?' Q, x! `# t DISPATCH_METHOD,8 E0 R* O- G) v- G7 ?( ]2 \
&dp, 1 @, e* a& a) n& ] NULL, 2 w- M k1 K- r S' c& @2 k, X &ei, ! ]% n; |# `: _$ l: g* l; { &uiErr); 6 u ^& b1 W8 `. D6 `" V8 {2 H: h) h 7 l; {! G$ {( e$ k: B% @ SysFreeString(topicStr);" J9 L* o/ t' N$ P' v6 ]8 w2 Q0 B2 \0 C
SysFreeString(itemStr);& k. i# F6 i& s! Q0 x6 z6 C5 Z
SysFreeString(valueStr);, c2 M. P! \3 v3 J! p8 ~
" a p% y9 w0 `3 x; T* n4 K8 Y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??? $ C2 o2 F7 A6 A; g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????7 m" g1 V* I# i% @1 L; l; c
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2.这是request的程序( p# e" X/ G( M- b" \
// Request a value from Extend " N: [, {' C, ~! U" p( A// 4 ~2 T% m. l+ i5 g( K: T// Initialize the variant that will hold the BSTR. Set the variant's ( Q1 V. ^) @ S, Q* x; c3 J// type flag to indicate the fact that this variant holds a BSTR. Place the ' g9 L% B0 ]+ N4 m) J! q// BSTR into the variant structure.- c( T8 w: o: m& X% C# b3 e
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);9 ^2 |. s% m( p1 U* H
; m0 R7 X6 ^, ~5 L; c itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); " \6 h+ O4 F @& l7 u VariantInit(&requestVariant[0]); ' y3 d. [8 K$ c requestVariant[0].vt = VT_BSTR;! J% T& b' d9 h& k; d O5 V
requestVariant[0].bstrVal = itemStr;- {/ Q% M4 |4 W* x: w% B4 r
8 p; x9 v" A4 r+ r* }5 M6 } topicStr = SysAllocString((WCHAR *) L"system"); $ ~2 y, `& z% O VariantInit(&requestVariant[1]); 6 }" X5 E. V+ H* F* [ requestVariant[1].vt = VT_BSTR; |+ L" H; t3 W4 B
requestVariant[1].bstrVal = topicStr; ; E* f" Y w: G5 L6 u9 I! c: U* q1 K( u& V- B9 N% e$ I
// Set the DISPPARAMS structure that holds the variant. 7 B. X0 r6 @6 }. V0 T5 K3 M; t2 ?
dp2.rgvarg = requestVariant; , U7 q0 t5 f$ Q7 h: E dp2.cArgs = 2;1 X, i) h) r6 L1 M1 ]1 p5 u6 M& n
dp2.rgdispidNamedArgs = NULL; 8 W0 D) P c$ Y4 v dp2.cNamedArgs = 0; 2 S7 p0 p5 v7 S+ V& x3 f J1 A, G2 z
var.vt = VT_EMPTY; 7 e; @0 \) L3 M& O' @% Y7 J% S
// Call IDispatch::Invoke() # ~: [+ a: o0 u" q 6 }# W- ~+ R' `- A; b5 J/ \ hr = m_pDisp->Invoke(2 p! z5 A; O* V6 m3 r6 j9 ]
requestID,+ w1 b) e0 n# R/ o
IID_NULL,, [, g- j9 ^4 M v+ b9 }2 |
LOCALE_SYSTEM_DEFAULT, 0 _3 ~% \; O- P% O3 M& ] DISPATCH_METHOD,! K; T7 E3 U1 b; H
&dp2, ) |* d, \0 s# j &var,* L5 L2 b7 ?; |$ \' L# q
&ei, + B1 K# `/ J; J" L) ] &uiErr); ; c( w7 z& `: W1 M% ~$ y1 R5 G" K: N0 E
SysFreeString(topicStr); 8 O) B7 V9 l' s h$ h% }! M. e6 ^) g SysFreeString(itemStr); + y+ C8 ^9 h- J4 C: x0 _0 M请问该程序是获得extend里面的哪个值?/ f; g3 \: l3 m" z: c- l- 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????