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:* H& w3 G* k# p% c0 E* ]
Name = (WCHAR *) L"Poke"; \$ z& c: V4 S$ P ` [
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hr = m_pDisp->GetIDsOfNames ( / |/ \1 G# y# I- y8 T6 D+ @ IID_NULL, // reserved' z7 P# p( G1 l, B" y6 X
&Name, // Array of names to get IDs for* o9 y1 k0 W" Y* I- ]! S- q
1, // # of names in the array3 y) I0 p8 C' h9 H6 ?. e6 _% B
LOCALE_SYSTEM_DEFAULT, // System locale 5 F% `- l; C' L &pokeID); // Array of IDs to fill on output; j1 |% C+ i' K% z! _4 z; X& s
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if (hr) ; R b; Y0 l% x# S { 0 m5 n# z. J [9 n MessageBox ("Get Poke Unsuccessful"); 8 ?' h: q5 T7 r8 \ return;8 |3 a6 O# H/ O" x x4 M
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/**************************传递数据给extend**************************************/+ u" q) _0 t8 c
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);2 E5 V2 v% X" O( a: h1 T3 Z2 J
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valueStr = SysAllocString((WCHAR *) L"1232"); 0 Z# Q9 C: R; ]: {- K" M VariantInit(&pokeVariant[0]); B8 R q$ x% b* l6 }9 Z
pokeVariant[0].vt = VT_BSTR; 0 E3 \# h X7 m0 z- x pokeVariant[0].bstrVal = valueStr;7 |+ [7 M0 P: g% g2 }
- C7 \) @, T. ]& l& A1 G8 S itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");, v8 F% i3 T0 c. N+ _# ^& K( U
VariantInit(&pokeVariant[1]); * C7 a8 _5 F) w
pokeVariant[1].vt = VT_BSTR;/ L; t% m8 b, F" i; l' h
pokeVariant[1].bstrVal = itemStr; 8 f5 X' c# J4 B) J8 Q . [8 k/ \2 x5 T' W* Z9 C topicStr = SysAllocString((WCHAR *) L"system"); % R& a+ q& Z2 b& J! B( a6 N VariantInit(&pokeVariant[2]); 8 _( c9 ~7 N$ a! U# S" b4 z pokeVariant[2].vt = VT_BSTR; * ?6 P; ?4 ?7 F( o* U pokeVariant[2].bstrVal = topicStr;/ W+ m' U5 m+ m% B/ S9 E
5 g; \4 D1 J3 l# B+ N// Set the DISPPARAMS structure that holds the variant.) }1 N2 m4 g3 b, P- i, T3 X& P
( }: p' T% J9 w( b. J6 T dp.rgvarg = pokeVariant; 5 s$ ^2 ?9 k, A) S: h dp.cArgs = 3;5 J/ D& s9 \9 j# K
dp.rgdispidNamedArgs = NULL; ; u) @- L, B5 Q9 u7 k: H dp.cNamedArgs = 0; / n+ y- p, X; J, g; ~7 C! z8 A. F ?9 s
// Call IDispatch::Invoke() : K8 X3 g7 C& t. H7 [: v( `' Y$ `; x3 [9 b: a
hr = m_pDisp->Invoke(, C% r: H9 D/ h" J7 |6 B
pokeID, ( l, Y! R3 t% v; ~9 J# y IID_NULL,8 t- u8 P5 j/ s x: @( E* n; @+ n5 L
LOCALE_SYSTEM_DEFAULT,$ n+ p% Z% h; R% ~- ]& a
DISPATCH_METHOD, & M) F( |- i* J: c &dp,* f# v4 d2 O! o; o
NULL, * A `% S3 J2 O" S &ei, 6 l/ Z. B) P, B# O$ K &uiErr);; _6 `0 w3 V: S$ m+ v6 c
& b9 `, R' D5 u: i4 W! u2 { SysFreeString(topicStr);2 Q/ I* v m* X. f+ O+ U8 g; i9 i
SysFreeString(itemStr);1 J- W4 q! l* C% e6 i8 r6 ]+ \; o
SysFreeString(valueStr); 9 n; x* K/ }0 K! J1 t6 G ( T }; o6 q' V. t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???# H; X' l; [# ~' a3 L. w$ u
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???? " @1 l2 R7 S) i" J" }1 [! S9 A/ d M' I/ p& z7 L
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2.这是request的程序& F8 @+ U* K# \; X
// Request a value from Extend : D% [) R |9 I+ `( @; Y// ! u4 L5 |2 w5 O5 m8 ~1 Q// Initialize the variant that will hold the BSTR. Set the variant's : z2 U r: H% T/ O) j+ `) H// type flag to indicate the fact that this variant holds a BSTR. Place the5 e8 ^1 l+ v% j4 x. Z1 }. B
// BSTR into the variant structure. 1 V% R7 {; B; N. S2 e& n# L4 I7 F* Q
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);" p6 U# U# Z' U
, `! h2 m3 Z& L6 G" p+ s itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");+ r# c0 _3 C% ^4 Q. e8 v; G0 C- ~2 m$ d
VariantInit(&requestVariant[0]); . v4 \4 a/ ^/ e2 g1 x7 M
requestVariant[0].vt = VT_BSTR;' H# x' H0 U6 P; b j: k: Z
requestVariant[0].bstrVal = itemStr; ! U: k2 ]8 R! e/ N2 c ! T6 K7 P' Z+ c/ T" F" x- f topicStr = SysAllocString((WCHAR *) L"system"); ( K; t7 X* S" R- g6 o/ `; e: p( I VariantInit(&requestVariant[1]); # q; u7 f7 ~# |5 I6 E
requestVariant[1].vt = VT_BSTR; ! d0 u3 f% a& w requestVariant[1].bstrVal = topicStr; ! J( f9 n6 i+ D0 E2 u# m" O k* g) [4 C* r; N% X
// Set the DISPPARAMS structure that holds the variant.- d: {: f% {. ^" B: L- c
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dp2.rgvarg = requestVariant;$ H- O c1 m4 k$ \. n2 a0 \
dp2.cArgs = 2;5 i. }2 G0 M. [, f( y4 y
dp2.rgdispidNamedArgs = NULL;8 R# s8 l( z4 Y% H" N1 @8 h2 }# F* G
dp2.cNamedArgs = 0;$ d# {. z& E- a. e( [
% I% }, }- R: \# R% y var.vt = VT_EMPTY;' G3 e8 Q9 V7 Z% {" A) g