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 v9 k% V+ g! l$ y, g
Name = (WCHAR *) L"Poke";" q |( R3 z4 G4 _
( h# }2 M- g7 a+ B0 h( M hr = m_pDisp->GetIDsOfNames ( 7 U5 e, W. v& g- n# j# W$ z9 [ IID_NULL, // reserved * y' k ~* o! s5 T &Name, // Array of names to get IDs for , V, ?- q$ Y& f 1, // # of names in the array " t. t$ _8 M" z0 b LOCALE_SYSTEM_DEFAULT, // System locale, r/ l2 Y2 S1 u4 D! d
&pokeID); // Array of IDs to fill on output4 V0 s4 @. B8 l
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if (hr) ! n* X* Y' t7 [) V4 Y! _4 @ {6 V: x4 I) t, y2 S* H
MessageBox ("Get Poke Unsuccessful");( y3 Z- G8 Z1 Z- o/ c7 p+ w M9 \
return; 8 v$ S0 @3 P* _; n2 E; q$ z }( y, y( o& j5 I- T2 ]8 C: s
! J3 V$ a. w6 x6 `7 Z3 B3 \/**************************传递数据给extend**************************************/ 2 q+ m( n2 d* U+ H) c pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); - }0 Z& l5 e% Z# H' H9 _ 3 y+ c0 P U" c% O# T2 U valueStr = SysAllocString((WCHAR *) L"1232");( e$ v* T7 W [) Y
VariantInit(&pokeVariant[0]); 9 y$ t9 B: h" U7 _) B& i
pokeVariant[0].vt = VT_BSTR; ' `2 X& f! t& Z pokeVariant[0].bstrVal = valueStr;6 A& b( V0 E6 g; D6 m7 p
4 h- S$ {/ J6 o2 C) h# c itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 8 h$ |5 n! z1 J* Q VariantInit(&pokeVariant[1]); 4 Q- `( Y- U7 P1 e pokeVariant[1].vt = VT_BSTR;& U6 T" y, E; ^% K$ Z3 b, ]
pokeVariant[1].bstrVal = itemStr;, t O& N" B% e( o I; D
) M9 t' l$ Y3 S; N6 p% X3 R topicStr = SysAllocString((WCHAR *) L"system");/ m- \' ?% u% O" U
VariantInit(&pokeVariant[2]); + L# \: m& g/ O$ K4 a* u pokeVariant[2].vt = VT_BSTR; 0 i3 A& @$ z# a1 n* W5 d7 O, { pokeVariant[2].bstrVal = topicStr; 7 U( ^- Q! [. [/ |, m . w7 |/ j5 C. e! H// Set the DISPPARAMS structure that holds the variant.; j7 o6 q* x, B6 g
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dp.rgvarg = pokeVariant; : m/ k2 r2 ]5 l- Y1 P+ _ dp.cArgs = 3; * ]" h; f- u- Q( T* a: A; x4 T dp.rgdispidNamedArgs = NULL;: q, R, w$ V. z5 C
dp.cNamedArgs = 0;& q( b' O" Z/ w" f3 j1 j
3 m) L) Q: p; R
// Call IDispatch::Invoke()% l- o' c4 s2 [; o. h. g
9 ?% u% H% N! Q& r' V hr = m_pDisp->Invoke(/ C6 P" P0 Y M Y& z/ u. W
pokeID, $ \* j% @$ J7 i. ^ IID_NULL, 2 [3 f, b. m6 A, X; O LOCALE_SYSTEM_DEFAULT," [2 W# f/ G0 g) g! }8 ^1 K
DISPATCH_METHOD,/ z- L2 n- P. s# D- ]
&dp,2 g: U& b3 k P" b9 y- g0 f
NULL,$ U3 p* R9 Y0 u* x
&ei,5 F ], V% u" [" |; H( z& H9 A( h
&uiErr);: v- u& G/ u& Y' z7 |1 Q- [$ H
# S/ J0 T% W w SysFreeString(topicStr); $ ^) o1 ^/ d5 Q( _ SysFreeString(itemStr);# o6 i n: ?7 }" ^
SysFreeString(valueStr); ) e' S: d. G! i2 o5 r) ~6 l ^1 [% i, R9 k# `5 L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??? ) C1 \5 A5 I4 z1 l6 S: H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 J. I1 s" X: f
2 T3 l! v: v: [ " l0 j/ t/ `4 R" d& @* y4 }$ C2.这是request的程序 4 t, r* n9 ^. p9 ~ ~: o7 `// Request a value from Extend8 v1 l: h/ Y. L) J+ u
//4 c+ y5 s, w, m7 _
// Initialize the variant that will hold the BSTR. Set the variant's 1 Z7 A, y; C. {% D" U// type flag to indicate the fact that this variant holds a BSTR. Place the Q" ]9 F# O& u2 v- f6 Z- Z
// BSTR into the variant structure.- d6 K% p0 [3 d& c3 l% R5 q
4 L! |# x' s6 C1 r& E, K" i requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); " D$ k, Z n8 E4 }" h ; B) O6 m( T9 i H6 z itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");/ p2 q* n) O" |0 X
VariantInit(&requestVariant[0]); 1 s& r. \8 `+ v
requestVariant[0].vt = VT_BSTR;+ X/ P7 ^8 G/ U p+ S
requestVariant[0].bstrVal = itemStr; ! J, U; ], h. A % m8 X$ a4 d( G8 z0 V1 V- t) K topicStr = SysAllocString((WCHAR *) L"system");8 u9 q: [4 I! ~
VariantInit(&requestVariant[1]); 8 K, m9 J! z; ^8 T( q% q1 o$ a requestVariant[1].vt = VT_BSTR; 6 ]4 k' [4 W$ Y' E$ I% ] f requestVariant[1].bstrVal = topicStr;6 f5 T* l1 Z8 `7 E, P
6 |/ a3 S0 V) }( ?// Set the DISPPARAMS structure that holds the variant. : }! [$ W5 ^2 q, M/ O0 ^ 8 B# N; r% p9 p1 | dp2.rgvarg = requestVariant;: M- l! ^, m, L4 V; V: l- ]' h
dp2.cArgs = 2; 0 C) i& l4 P$ G5 k& Q- \5 G dp2.rgdispidNamedArgs = NULL; $ o! J1 _6 U; `2 v8 i" x5 V ^ dp2.cNamedArgs = 0;" a* z1 X- U) b V! |
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var.vt = VT_EMPTY;; T2 _ ?6 i( @
/ d& N1 x" n( `% U// Call IDispatch::Invoke()) y, m& j \0 |
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hr = m_pDisp->Invoke( 4 I7 j6 O/ s0 U' W! a; ]9 D( t requestID, 2 ]6 {. ~! U1 D; |6 l IID_NULL,: G( K2 R- y0 y
LOCALE_SYSTEM_DEFAULT, 0 N4 M& U: L* h+ u5 s DISPATCH_METHOD,$ u$ a4 `6 D1 g
&dp2, 5 O; |$ t2 b$ c7 i* A &var,$ ~3 C5 N( ^5 u- @ M. _9 T
&ei, - }, P' w, P$ ^$ U W. o. h. p &uiErr);- Z. o. y6 N# a' p
! ^; W- f+ M7 d6 S3 C) q! C' M SysFreeString(topicStr); - L t) ?% q% t2 Z- a SysFreeString(itemStr); 3 y# D8 L& r( v9 d( E请问该程序是获得extend里面的哪个值? , f3 J- J5 W! E* q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????