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:, W' ?6 \( e% w3 t5 g
Name = (WCHAR *) L"Poke";: ^. `1 N/ F5 p$ F, F
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hr = m_pDisp->GetIDsOfNames ( / K: W; q" K; o! G6 U( N IID_NULL, // reserved 7 W( ]% Z. j+ {& v; x K5 G8 l6 Y, G &Name, // Array of names to get IDs for/ h. P+ F5 W+ t" }) C1 ^* A( K
1, // # of names in the array ( m* ~, L3 i( @" ]9 L LOCALE_SYSTEM_DEFAULT, // System locale( j' o I5 B# h/ ]4 B
&pokeID); // Array of IDs to fill on output0 u1 ?" o3 d/ e
5 P" B2 _# U* m6 R/ \0 T1 r2 o9 O if (hr): q* B8 _, [& b$ a
{ 1 z0 B g* f+ b- |$ }4 [$ c9 ?/ J MessageBox ("Get Poke Unsuccessful"); ! g$ l2 O" M( K& p: B! Y7 L% E+ j return; u: ? n; B5 y; k5 Y6 ?/ r } ' P" L5 H, E: R2 y0 d - l5 L$ @8 t( i" n- I/**************************传递数据给extend**************************************/7 k) K* h& V v& [
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); ?* [. p3 _8 c* B& u0 U
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valueStr = SysAllocString((WCHAR *) L"1232"); 4 B) _7 d/ _+ K0 @: `# c VariantInit(&pokeVariant[0]); # y& k/ ]4 X8 ?$ W pokeVariant[0].vt = VT_BSTR;0 C* w' y( }9 d I
pokeVariant[0].bstrVal = valueStr;7 x$ w6 J8 ^6 L4 Z# W
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");# Z: a G' p' Q$ x" m7 \- q9 E; U
VariantInit(&pokeVariant[1]); - u& y/ S) m& t, e. _. x5 O( [ pokeVariant[1].vt = VT_BSTR;/ K0 ]( X8 ?: e2 d% P+ Y) n
pokeVariant[1].bstrVal = itemStr;6 ~9 L8 O( r7 z7 x" K4 j! m8 k
g4 K, J V4 z r1 I; _9 |0 e" U topicStr = SysAllocString((WCHAR *) L"system"); f# o, B j, M9 K7 m VariantInit(&pokeVariant[2]); : L, h, S6 L: _' N/ j
pokeVariant[2].vt = VT_BSTR; 1 {7 K# D; T* t' h6 I! d _ pokeVariant[2].bstrVal = topicStr;9 P+ ]2 W. ^/ D
) p+ y# N6 U3 L4 H' V3 q; @: i// Set the DISPPARAMS structure that holds the variant. ' p/ Z$ E6 ^" C! J0 ^9 p" x 4 ^. \) c* v% E* B2 _3 V dp.rgvarg = pokeVariant; , }6 C c$ S& }9 O/ F dp.cArgs = 3; ) I8 R) z; F$ x$ v. o dp.rgdispidNamedArgs = NULL; - j; N' x9 J' ~' A: J# O dp.cNamedArgs = 0;7 p3 G% C3 G' V. W/ _
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// Call IDispatch::Invoke() 1 g! g; R$ r' g) m6 e5 V 2 Y: y" {% i+ ?- {/ S7 u hr = m_pDisp->Invoke( 7 b( O2 }3 W0 T pokeID, + r @* @7 S" B( g- e IID_NULL, 5 u2 w2 [- N, ~9 L, z" H LOCALE_SYSTEM_DEFAULT, 8 p$ i& H' F8 r) q DISPATCH_METHOD,1 ~6 x5 D$ S: X5 D) O! n
&dp,( Y9 K( n4 L+ I: H8 U% e3 q# | j
NULL,' d# I: Q( D& M* Z( }2 Q5 V0 f
&ei, 7 T6 ]( \$ \2 X$ Q# ]$ D &uiErr);% w5 U' \6 D- ?
9 A$ j E! H' Q5 y4 x+ X; q; I SysFreeString(topicStr);2 e8 c" e( X0 y! F: y; I$ f4 r/ \
SysFreeString(itemStr);" d' ? n4 |8 d' `# n
SysFreeString(valueStr);2 w5 U$ E2 p6 v" W/ \
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2.这是request的程序 , W' L9 _( f# X! z* w$ e! O// Request a value from Extend , h6 D/ u) B. ^. ?( H// 8 c) T+ g* y" d( D/ m( S8 X// Initialize the variant that will hold the BSTR. Set the variant's' g8 M m6 p4 e6 Y' ?/ S( R8 m
// type flag to indicate the fact that this variant holds a BSTR. Place the " |/ I9 D4 P. |; h. C* r$ P/ S0 N// BSTR into the variant structure. . ]- S# a) s$ r; @ b7 q5 N8 I. @6 n# n3 b5 G
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 3 _7 V0 ~& I% C4 F. _/ A* Z4 d7 f ; V0 R& e ~% e: D1 E2 r itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");; q8 `- L2 m! L5 O$ s
VariantInit(&requestVariant[0]); # N/ j! \9 i/ I+ H% G8 G! Z requestVariant[0].vt = VT_BSTR; 4 l$ I a) t/ L8 K+ W+ o* P T requestVariant[0].bstrVal = itemStr;" D( b: ]/ u: c
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topicStr = SysAllocString((WCHAR *) L"system"); 8 n& | `3 q$ a. T9 J/ l; T VariantInit(&requestVariant[1]); - k( S6 @8 m' d+ |
requestVariant[1].vt = VT_BSTR;/ V1 I$ O$ H) {9 q7 |3 S
requestVariant[1].bstrVal = topicStr;5 H- Z: m! r# B" ]' j
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// Set the DISPPARAMS structure that holds the variant. 5 Y2 y- g, [; [! w" x- H , p" w& D7 L( g. j8 c dp2.rgvarg = requestVariant;& \' F4 f2 Q1 X' v
dp2.cArgs = 2; W1 [6 d' Z7 w
dp2.rgdispidNamedArgs = NULL; 4 T, |8 T! q, W+ j# i/ w dp2.cNamedArgs = 0;) i. Y7 r3 c! H
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var.vt = VT_EMPTY; 9 ]% _3 k' x4 Q. F( V % T, Y G2 j8 H+ ?' I( B& N6 A$ U8 d// Call IDispatch::Invoke()+ {) C' I7 t6 l1 h