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:/ B% t2 m2 q+ A7 x
Name = (WCHAR *) L"Poke";7 j, J! q# o% H) E
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hr = m_pDisp->GetIDsOfNames ( 4 ^8 ]6 K/ [$ d, V0 x$ C IID_NULL, // reserved 8 X5 n9 a' o# a0 M1 p/ g7 u/ V6 Q6 S &Name, // Array of names to get IDs for ) w2 r- S" `. P' b; T 1, // # of names in the array 7 C, y# B, `1 h/ z6 w N; G LOCALE_SYSTEM_DEFAULT, // System locale % P& |. ~3 X5 \; |0 Q1 U4 i8 B &pokeID); // Array of IDs to fill on output0 i$ M: T. y1 u6 ]
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if (hr)( I+ q( k' A9 C
{ + i2 O$ f- S' u MessageBox ("Get Poke Unsuccessful"); : _7 i( E* n s2 t. u return; 5 C/ j# P J! Q, E3 u# \# @ } j9 u4 x. `' W0 D0 E3 P# C
( B1 j; | r! {3 x, I& {/**************************传递数据给extend**************************************/ % ?0 t- B9 J. P9 P' h pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);7 `7 ?6 n9 c1 g
% u0 J! q# v" q1 K( z3 Y+ F; G) c valueStr = SysAllocString((WCHAR *) L"1232"); 1 K4 ^' `8 q* w1 N6 A5 H VariantInit(&pokeVariant[0]); 0 f8 {, R4 a2 S6 [* z
pokeVariant[0].vt = VT_BSTR;0 K: S; q& ^# s$ L
pokeVariant[0].bstrVal = valueStr; N% F. y8 [, x
" C$ o4 x1 Y4 C" g: V( t1 l3 Q$ v itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); # R- r8 S/ [4 z/ ]6 \$ l( f$ o VariantInit(&pokeVariant[1]); 0 F, @# k+ a8 I
pokeVariant[1].vt = VT_BSTR; * D) [8 }' K T4 A pokeVariant[1].bstrVal = itemStr;8 ?. L- {: B; M8 O
4 e# e7 K8 x7 r; ^6 P topicStr = SysAllocString((WCHAR *) L"system");% O9 t6 q0 ~$ q+ t
VariantInit(&pokeVariant[2]); E1 P- H) e6 Y |6 k0 b" T, k" q" \6 j pokeVariant[2].vt = VT_BSTR;# H3 D, C$ h) B$ u v5 Z
pokeVariant[2].bstrVal = topicStr; ' Z# H" F2 O- d- u8 L) r5 ~; C" s1 f# ?- a; r& F3 x0 }$ x
// Set the DISPPARAMS structure that holds the variant. ) {. S8 D! E( ?5 o- @2 l- z8 v) S7 c
dp.rgvarg = pokeVariant; f& C" Q) w7 h5 ~3 q3 h dp.cArgs = 3; 6 D/ M+ V9 l @7 ] R dp.rgdispidNamedArgs = NULL; 1 T8 s4 e4 B5 P4 C8 R# v dp.cNamedArgs = 0; 1 o0 A6 m4 M* `2 g7 Z9 `: q2 L( f1 F$ K+ R8 ]
// Call IDispatch::Invoke() 0 K+ _/ E+ `* O% D. N$ i * H1 b8 M( Q, |. R# D: {$ [2 _ hr = m_pDisp->Invoke(! k5 \9 n2 q. a Q
pokeID,9 Z* N. t3 `' d, j/ e8 j; _ D* |
IID_NULL,6 c# h, k: K; f$ A _" d% ?, r$ u
LOCALE_SYSTEM_DEFAULT, . j* ]3 W5 R* E2 M2 l. L DISPATCH_METHOD,) R5 P. ? W) M- X
&dp, 2 m$ Z2 k" v- ]5 v, ~ NULL,! H& K$ h3 C& E0 E0 k! L& Q
&ei,3 @3 U% f& [) g
&uiErr); % ~2 b/ c2 T6 l& k1 l2 Q( V4 f/ [6 e; u: R \8 d0 ^! Q, X# V
SysFreeString(topicStr);) k4 |+ r/ P2 Z2 K; [! i9 L
SysFreeString(itemStr);# w* i& U$ X% s: n# u
SysFreeString(valueStr);. M8 G7 j) U# S/ ]* M
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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???, h& z9 R+ G# a1 ^6 e. K3 {3 _
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 W( S5 u& Z9 x
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2.这是request的程序 ; v, G% ^( B4 H$ X// Request a value from Extend . K0 e4 {4 l; ]8 G( X; N [7 j// + ]7 ^2 Y% z& J1 l// Initialize the variant that will hold the BSTR. Set the variant's. [/ H, y( [4 d
// type flag to indicate the fact that this variant holds a BSTR. Place the 6 }! x r5 T8 p0 O7 N& b6 w$ L// BSTR into the variant structure. 3 |2 V. U. O! _1 ^) G8 S/ o 2 L) P+ U1 W- M requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);% ^5 v& B7 P8 [$ u( D
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 7 e1 a2 C) L+ A! \ VariantInit(&requestVariant[0]); 0 |- I. s9 P4 f; M: R
requestVariant[0].vt = VT_BSTR; % Z7 B2 a' g' ?) _ x/ B requestVariant[0].bstrVal = itemStr;; h: u: {/ X" k, Q
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topicStr = SysAllocString((WCHAR *) L"system");: s+ n9 R8 i9 O7 D& `$ E8 x
VariantInit(&requestVariant[1]); . U* S+ ]0 W0 B/ t# i; v6 t
requestVariant[1].vt = VT_BSTR;2 `+ `0 b9 q6 T- [
requestVariant[1].bstrVal = topicStr;# w$ @# [! C$ b
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// Set the DISPPARAMS structure that holds the variant.8 m: w0 m! M! E9 x9 f( i \6 {0 `0 S
& H8 v5 ?. H* y! b5 h dp2.rgvarg = requestVariant;0 s* Z/ P6 P( U1 G! k& G
dp2.cArgs = 2; - I5 m- I/ _+ y: m dp2.rgdispidNamedArgs = NULL;6 R+ E2 k4 n9 @) ~0 _; i) |* r+ z
dp2.cNamedArgs = 0;7 B( L+ q6 d* n! g [
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var.vt = VT_EMPTY; + K+ o& `4 I" e0 h7 `5 N1 R) P( u' {7 k5 T. G# ~
// Call IDispatch::Invoke(); I% W0 e, \* g
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hr = m_pDisp->Invoke( 6 j# F9 I" |0 m! A# M5 m. U! m3 y( e% z requestID, & ]% p# D+ h% F+ j4 c4 N IID_NULL, Q- l, ^7 d, `) ]) g- ?/ W
LOCALE_SYSTEM_DEFAULT,& }2 q `/ i' d% E$ H: y4 a: q
DISPATCH_METHOD,2 D# u3 G) M3 n$ `% h' ]$ z
&dp2,. Y! o) z4 P9 f9 q* N
&var, 2 P' f+ B0 Z. [/ Y7 A. M3 @ &ei, 9 ^8 C' Q- L5 _* @6 K* [ &uiErr); ! y$ o- b+ q' S" a " A7 I( S6 B. [ SysFreeString(topicStr); 5 U! U/ ^" F+ s SysFreeString(itemStr); + Z, h* b4 v0 ?3 B请问该程序是获得extend里面的哪个值?) |7 `5 ]' V7 ]
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????