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：+ B1 x8 i" z$ a q o
Name = (WCHAR *) L"Poke"; : T, G# `7 O& @ % H* S: t) p5 I
hr = m_pDisp->GetIDsOfNames ( W+ M: G5 ]2 ? IID_NULL, // reserved! |+ g& X* r& n. c. @! o
&Name, // Array of names to get IDs for+ N f4 b0 F. l' j7 b2 y
1, // # of names in the array7 r; Y$ w" ~- U, Y
LOCALE_SYSTEM_DEFAULT, // System locale 1 C. c' `8 Z8 q &pokeID); // Array of IDs to fill on output 4 \6 p9 e) B. b0 S% k4 _ " D+ o4 E$ s; F {6 S. B
if (hr)* @9 O( d* R% n
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MessageBox ("Get Poke Unsuccessful"); # k: D$ R2 {, a5 p return;+ y2 w" X( v2 ?0 ^/ L
} ' C. e0 a' ~' X! b {) A2 O1 k0 @- z$ m
/**************************传递数据给extend**************************************/ 7 {6 o; A5 c: }9 ?7 ^% w pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 8 l: Z! s5 g" o& P . g) g- J, _8 m* L8 m0 A2 T8 L$ p
valueStr = SysAllocString((WCHAR *) L"1232"); - E$ |- A5 Q: a! ` VariantInit(&pokeVariant[0]); 5 ~* Y/ j0 Q- P: X% @8 v7 } a: r- H
pokeVariant[0].vt = VT_BSTR; - G6 M* o* {# H9 ?( ^ pokeVariant[0].bstrVal = valueStr; : G$ ^/ e0 B8 g8 @* U* E8 r' t8 `! v
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! g- D1 \, ?; [& ]: o
VariantInit(&pokeVariant[1]); ) A$ S2 U5 T- H3 [9 q& v/ J S; {* l
pokeVariant[1].vt = VT_BSTR;1 Y2 o4 s5 I/ i& v3 z* ]# v
pokeVariant[1].bstrVal = itemStr; 1 B- \9 [- `+ t" ?4 @2 C# d* t# Q+ g8 P2 U* L
topicStr = SysAllocString((WCHAR *) L"system");$ E3 l; q' F" R' L% }
VariantInit(&pokeVariant[2]); ; w; z; T0 W( w/ { pokeVariant[2].vt = VT_BSTR; ( W% Y: X+ B9 f+ J: c3 v pokeVariant[2].bstrVal = topicStr; ( S" b; K7 ?( a! i) K + {/ j7 c; \ `+ S5 U// Set the DISPPARAMS structure that holds the variant.' q; B, ^) ], e k& l
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dp.rgvarg = pokeVariant; ( w3 S, R/ _! p$ ?+ J dp.cArgs = 3;, @8 S9 T9 L3 h" K
dp.rgdispidNamedArgs = NULL;2 H* J$ s; Z" l4 x/ n6 d
dp.cNamedArgs = 0; + e/ }4 d% B7 d) O: d0 d$ J 5 ` s5 f4 m9 S) {6 ?// Call IDispatch::Invoke() 5 J3 m! K! h! L: v8 C5 H% {9 [ M! u! L: k+ k% ^ h7 K) p8 C: g
hr = m_pDisp->Invoke( 9 l# O/ t$ P( c pokeID, o" W3 a1 `% Z) p9 K, [; Q IID_NULL, {+ b: g$ K1 B; t, |" T
LOCALE_SYSTEM_DEFAULT,$ W$ _9 h a9 \) w
DISPATCH_METHOD, H- f' ~& A5 n O
&dp,+ V4 X. V; m* a5 S5 G
NULL," e& u: r t/ [0 Y {
&ei, T% x$ e; Z7 P
&uiErr); ( W, ]% X& ?# P5 I: x0 |" ?, {4 u7 x1 b& _
SysFreeString(topicStr);" O- a: m$ L7 E% ~7 [& u) B
SysFreeString(itemStr); / Q. M; f% q: R3 G3 ` SysFreeString(valueStr); " l* n: ]9 b, g% n# O- q) i' U4 v- u* i3 G
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？？？ 3 R/ |/ x7 Y# G7 @1 l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？？？？ G: s* w6 \& d, r
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2.这是request的程序" k* Y3 G. \3 J% x* _
// Request a value from Extend # h) n$ M. m2 I. j//. ?1 Q) {( i, M* N
// Initialize the variant that will hold the BSTR. Set the variant's: j0 r" g9 R& K7 ^# n
// type flag to indicate the fact that this variant holds a BSTR. Place the4 i p$ ~$ m. O) p
// BSTR into the variant structure./ g& a* h* j+ S8 Z" j/ x
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);$ d* }8 ^$ H& a2 ?) @+ L9 }
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); , N% a) p( G6 J3 ^8 ^ VariantInit(&requestVariant[0]); & N+ s7 ?1 ~; j/ d& {% d/ z2 t requestVariant[0].vt = VT_BSTR; + W. W8 I. w" c/ p" f requestVariant[0].bstrVal = itemStr; & Y8 ~1 g- c5 U* O* S% t/ V3 k! @* T8 k% z( f' F. o
topicStr = SysAllocString((WCHAR *) L"system"); ' n+ i) e( Q8 K+ x VariantInit(&requestVariant[1]); ! v9 V* [- u' X, Y V6 H
requestVariant[1].vt = VT_BSTR; V& }$ D" F% M" r$ f0 Z requestVariant[1].bstrVal = topicStr;+ w7 v/ x6 g& l7 v- m+ W
2 T4 [* O' k. z: n// Set the DISPPARAMS structure that holds the variant. 7 U9 j: y7 \5 v# ]6 m) R ( f' r0 O. `6 N% `* s dp2.rgvarg = requestVariant; ! @9 J4 W2 q; [! ^1 a/ a4 J dp2.cArgs = 2;- d' o! [2 D3 l% ]' ]
dp2.rgdispidNamedArgs = NULL;# ]% y: |& C' m
dp2.cNamedArgs = 0; ' H9 f& A. J$ v1 G+ p: l* e, _' n! r+ j4 ^ W' B
var.vt = VT_EMPTY;, O; c8 n: e4 U8 l! K
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// Call IDispatch::Invoke() w& A* [+ P) d
3 o2 G0 \8 G3 N hr = m_pDisp->Invoke( 7 j4 B$ _" A, p1 U! D* f requestID,6 U0 _3 i4 I' R: U$ X$ |- I2 C
IID_NULL, ; P! O, m$ J$ g, v6 { LOCALE_SYSTEM_DEFAULT,6 C5 v7 H4 q5 J
DISPATCH_METHOD, / e' ^/ J9 T. r# U% a9 @4 D &dp2, 7 C. C% M+ S1 H6 i2 j7 l) k: S" x" z &var, 9 S8 `/ ~8 t1 ^, R' I &ei,* w" S/ H( Q+ h' q% N: C' W$ `
&uiErr); / s8 F) A; Z- |( ~- z, Y- Q& I1 U6 h* v# ^" R- b. ~- r- ~
SysFreeString(topicStr); " ]- ^" i5 E- o8 r7 t% | SysFreeString(itemStr); 1 K! ?! u$ w n" N请问该程序是获得extend里面的哪个值？ % c2 P' R( F" ?# E4 C/ h4 o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？？？？
发表于 2008-11-25 19:37:03
