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：+ m' u6 C9 u) k) L& ^
Name = (WCHAR *) L"Poke"; # Y4 [) c+ K( g! W e$ _7 b( Y$ m+ B3 Z hr = m_pDisp->GetIDsOfNames (/ p' j; ?. k6 F. S8 ^% c
IID_NULL, // reserved + L a9 W: l& h+ W; a' Y# B6 ? &Name, // Array of names to get IDs for( \( r M S/ a, T8 B4 _' r6 x
1, // # of names in the array 6 `4 @- m" {: s. W( I9 U LOCALE_SYSTEM_DEFAULT, // System locale# `6 U4 Q- q" D0 M7 f
&pokeID); // Array of IDs to fill on output & Z1 b! b, Y2 H 2 Q0 t! S, v& s
if (hr) X4 r" C7 z# O# ` { ( g6 b& y+ E. g S5 w# q MessageBox ("Get Poke Unsuccessful"); ; {4 a: c" `; i$ x9 k! a return;! b; J0 P1 [3 C# u2 h+ j
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" W! z6 v* {2 \* V* ]+ _. n/**************************传递数据给extend**************************************/1 H9 ~: }( q4 [* C
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);. |; \9 [- Y9 W+ O% ~
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valueStr = SysAllocString((WCHAR *) L"1232");6 R& @! a d- ]) P* m/ J) {: O$ f; u
VariantInit(&pokeVariant[0]); ; @9 D4 }* y l4 U: `9 k2 t7 C
pokeVariant[0].vt = VT_BSTR; " N% `; x% H. N: h7 }0 b7 | pokeVariant[0].bstrVal = valueStr;6 h1 H- B( D# Q
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");# G1 X+ X: ]5 N& J r$ f# e
VariantInit(&pokeVariant[1]); 8 A( |8 j; Q! {2 I, w: s) o
pokeVariant[1].vt = VT_BSTR;) f# M0 [0 w7 B
pokeVariant[1].bstrVal = itemStr; - [- [+ K9 K/ d% T8 {. _$ w" ? * ]. J3 w k( F0 `% T topicStr = SysAllocString((WCHAR *) L"system"); ' Q' V, `) {) W% J( U+ Z d4 @ VariantInit(&pokeVariant[2]); 2 @% I$ _' @( ~: ] pokeVariant[2].vt = VT_BSTR;2 F0 I: N6 o/ k% j0 z% C! S# m' E% P
pokeVariant[2].bstrVal = topicStr; 0 C, q2 a7 a R3 f2 T; d4 X7 k6 E! y. y8 |1 Z
// Set the DISPPARAMS structure that holds the variant., P: h. [# |, _3 D
! f2 v! f# v+ A) T2 a dp.rgvarg = pokeVariant; " R# C# G; v% |- J+ h% G& h dp.cArgs = 3; 9 h* e6 h) B) P: z; k dp.rgdispidNamedArgs = NULL; 4 r0 c0 d- M2 b( z4 L4 ^ dp.cNamedArgs = 0; 7 \$ A7 j( F$ @; P ) o; G7 j1 g" s: b# w! [// Call IDispatch::Invoke()- x8 p: L+ V8 k) h. o5 j
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hr = m_pDisp->Invoke(- [" A% @' [$ D) L" }! `: m" U
pokeID, 8 j G' h' c' S$ l# d7 f IID_NULL,& Z% D. F! _. g6 T
LOCALE_SYSTEM_DEFAULT, , g$ c8 P. S0 v* D DISPATCH_METHOD,2 e0 { O* L8 D1 n. E- F
&dp,2 f% g1 O+ d, b3 d9 K. r
NULL,# W" Z% ?0 n8 a7 s/ V
&ei,8 L/ R( ?5 D) ]4 N7 b% x
&uiErr); - K4 K; E3 D- I8 N9 E6 @ " _$ i' [& B, T% v/ s% U9 g1 y( g SysFreeString(topicStr); / k- e, G N) V" P. B3 K SysFreeString(itemStr); : r. l { C* K: n6 z0 j SysFreeString(valueStr);. e" l$ ]$ u& s3 z0 _& O- l# ?
% A9 w N* J1 |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？？？& x- L2 T- N, m& Z3 c$ N$ N, r+ m1 O
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？？？？" m% T# h* R, c
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) v! |. m; @) u0 \2.这是request的程序 1 C* A0 l1 l9 b0 |// Request a value from Extend / D$ g+ j' ?1 V2 T s// 2 y6 X4 v% g/ I3 T// Initialize the variant that will hold the BSTR. Set the variant's 5 W8 o; z' Q) W; S// type flag to indicate the fact that this variant holds a BSTR. Place the ' G2 U7 H" s% h// BSTR into the variant structure.. U( r- G1 H9 N
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 5 q& u- p& F! [ F 4 \& y; Q; A6 x itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");# k- Q: V! g* m: ^
VariantInit(&requestVariant[0]); 6 v z( c. p3 O; r6 I$ b
requestVariant[0].vt = VT_BSTR; : X3 m+ c8 I9 |$ W( R/ |0 r requestVariant[0].bstrVal = itemStr; 4 G- s% c% X3 G4 S$ R3 a% S) ~: {3 C
topicStr = SysAllocString((WCHAR *) L"system");' V* ~; n5 L) u/ A: e
VariantInit(&requestVariant[1]); 9 E% K- V2 @0 ?5 R( X0 J
requestVariant[1].vt = VT_BSTR; M/ n4 b! Q* g9 N3 ?5 h3 _8 W; t requestVariant[1].bstrVal = topicStr;: v' U# i4 ~( Q; k( \8 @# c& G
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// Set the DISPPARAMS structure that holds the variant. 5 |1 S3 {* C v z g* w( G. S! Y4 A& Y& n/ O
dp2.rgvarg = requestVariant; ! @( t( M0 F, [) p7 c, m dp2.cArgs = 2; 3 J j7 T6 W. p/ e dp2.rgdispidNamedArgs = NULL;% p2 N+ B, h% x8 e5 L
dp2.cNamedArgs = 0;/ u; X: J5 T T
b( S3 s2 T$ t+ _8 n3 x# u; P+ Z; g5 [
var.vt = VT_EMPTY;$ H0 P2 ~7 Y+ R$ d2 X
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// Call IDispatch::Invoke()3 ^- b* j1 K& F) U
! D) D/ d+ X1 K* P2 d% w hr = m_pDisp->Invoke( ( ~( Y- k9 r6 k3 a' g requestID, 3 C' d7 j" @) [; `) r) g q$ O$ E IID_NULL, , V9 w5 c9 \( S0 V" q LOCALE_SYSTEM_DEFAULT,$ D, o4 z$ Z$ V4 I
DISPATCH_METHOD, 7 G0 N/ ^+ B1 ^; ?0 B+ r &dp2,. A) |6 ^0 |' z7 n- M, {
&var,- y" s( t) O+ }: N0 x
&ei, ( f; T$ ?' x( ?" d; X" v0 { &uiErr); . ?) |$ }* a* l8 k5 m! { |! J+ T8 S! {
SysFreeString(topicStr); 0 h) Q; a6 o/ L R SysFreeString(itemStr); 0 ?: e3 g: B) q1 |请问该程序是获得extend里面的哪个值？5 K* C$ k8 M8 c. a9 p4 \
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
