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: ' k( B/ z) s$ Q5 M' BName = (WCHAR *) L"Poke";. i ?& r1 m# b2 x8 S
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hr = m_pDisp->GetIDsOfNames (/ Y' {* k' |$ M& D4 q
IID_NULL, // reserved 9 E# z! q( [: N, S% Q) C4 i &Name, // Array of names to get IDs for2 y) t; z3 j. W$ g: k" N9 ^" O7 f
1, // # of names in the array e4 G) U5 z r2 X. W- E2 Q1 K
LOCALE_SYSTEM_DEFAULT, // System locale 2 D; J. E7 {: q! W5 {. {4 Z &pokeID); // Array of IDs to fill on output 3 q7 o, m; H j9 n5 E1 ?5 i0 n% J - G9 j: F7 S5 ~. a
if (hr). \/ m6 S" A' y, n& p4 [" C! s
{ 6 B k) p+ n; s/ H* U1 o9 I- o MessageBox ("Get Poke Unsuccessful"); _; ]" v, X7 v8 o+ L return;0 T7 T, t( P: H! U
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* e3 Y5 ^8 P' z/**************************传递数据给extend**************************************/: x7 {# ]& P K6 ~2 M5 n
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);. h9 |/ L+ u4 n9 s
$ V! I; k' a3 ` valueStr = SysAllocString((WCHAR *) L"1232");5 D/ T/ }# `2 T$ X! R! x
VariantInit(&pokeVariant[0]); * h, _) ^. `) Z8 c+ O8 n pokeVariant[0].vt = VT_BSTR; % E0 u. z/ {: E/ t: s4 u; q" X pokeVariant[0].bstrVal = valueStr;1 Q* U2 w Z9 B9 r' ~
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); * ^" p- Y S9 I VariantInit(&pokeVariant[1]); 4 g# [. s a3 P% J pokeVariant[1].vt = VT_BSTR; 6 v' ^! e w j4 O pokeVariant[1].bstrVal = itemStr; 9 I& Z+ B+ [! y* v- Z6 Q8 c8 k4 W4 {4 x' ?* p+ O
topicStr = SysAllocString((WCHAR *) L"system");* V- n5 @" ^8 F; V8 }8 R: I h
VariantInit(&pokeVariant[2]); 6 |( [1 v2 Y( B
pokeVariant[2].vt = VT_BSTR; / t0 f+ i5 \/ { pokeVariant[2].bstrVal = topicStr; - i8 ?+ `$ u3 a' c2 `7 @: L& H. q' Z6 g' r5 {1 p J
// Set the DISPPARAMS structure that holds the variant. . p% K. e( ?; h% E ' V8 s- J+ V; W# h8 c8 | dp.rgvarg = pokeVariant; + y: Z% v. S4 y- s: P1 r dp.cArgs = 3; - J! y Q0 ^& {* z: \" ]' v dp.rgdispidNamedArgs = NULL;$ t( D4 u7 H7 {8 }% D* S8 A
dp.cNamedArgs = 0; & I" ?& c5 {) S# D# X- | 9 j. c8 f* X- [* w8 S* j* K// Call IDispatch::Invoke()- ]0 I: K: q. d+ |
4 A9 e6 C5 {& [, _1 H* L% Q hr = m_pDisp->Invoke( - D2 G& U7 K; }- a2 f1 p9 B; I% Z pokeID, 3 K0 t/ O+ J8 Z. y+ I. t IID_NULL,0 ~9 x. a0 H# n" K
LOCALE_SYSTEM_DEFAULT, ( y k1 K% O2 n' N DISPATCH_METHOD, 1 N- Q& P. w" Z) P3 T1 d# q; M( S/ D &dp,1 z! H l* W4 E1 q+ C/ h1 k; [3 x
NULL,; C2 f/ U1 ? C7 t/ J2 v5 R
&ei, 6 Z& [! U$ H6 E5 P: I6 F &uiErr);8 e$ Z3 P ]0 g
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SysFreeString(topicStr);2 ~9 T" h/ I a7 Y. t E# W2 a
SysFreeString(itemStr);; w# s C/ g/ j6 g
SysFreeString(valueStr);+ j: _1 B- I7 J
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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; H$ Z8 x P' S9 f3 }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????0 T4 K7 J$ {# d# y8 z; K
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2.这是request的程序! L- t& Y C0 n1 Y) l
// Request a value from Extend , u g# a( \9 O$ I// ! e8 {# N3 D' z/ y; E6 @// Initialize the variant that will hold the BSTR. Set the variant's2 \! i5 k) S5 l6 Y% M @) a. B- w, h
// type flag to indicate the fact that this variant holds a BSTR. Place the + c! C/ W: J$ j; k5 j2 R// BSTR into the variant structure. - i9 z+ Z( h# C7 p) |$ o$ E/ D; F% Y# L/ |6 J5 f4 B
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 0 \8 Z! i* B1 E* X1 N* [6 r* c" K X' D2 s, e5 {- x- k itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 5 V3 t+ k% X+ T* t! ^7 i( n% @ VariantInit(&requestVariant[0]); 1 ]- F- H0 ?* y" `. ]' t+ U requestVariant[0].vt = VT_BSTR; # k D( z* Q8 i3 S- L, m requestVariant[0].bstrVal = itemStr; & q: j c% N( S1 @ _6 @6 w 6 u, X3 {. f9 J- z$ u; K% j' R, w( ] topicStr = SysAllocString((WCHAR *) L"system");- K, X) R* \$ N& e' C( `
VariantInit(&requestVariant[1]); 6 T4 u' D9 G( G1 _1 L1 ~- b requestVariant[1].vt = VT_BSTR;, `( n6 u" o$ }' O% S, _* ~) Z5 z4 o
requestVariant[1].bstrVal = topicStr; ! b& W! z* g* @7 v* z% ?% G* @2 }5 o9 I
// Set the DISPPARAMS structure that holds the variant./ V& K2 _6 |/ ?( u- m