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: 2 U/ r3 m5 o g* |6 _' nName = (WCHAR *) L"Poke"; * n |2 }/ |9 n1 b 1 l/ _5 c. B7 R2 d2 ]6 M
hr = m_pDisp->GetIDsOfNames ( 6 t" w4 m% {) D* p, r2 Z IID_NULL, // reserved - R/ q" T b+ V0 |% J &Name, // Array of names to get IDs for : J ~! Z* {- B7 @9 l 1, // # of names in the array # Y3 N# k/ [3 ], p LOCALE_SYSTEM_DEFAULT, // System locale P' V( d5 C! I4 n &pokeID); // Array of IDs to fill on output6 n3 x5 u0 U! W
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if (hr) 0 j" @0 q/ }/ o, ~0 ?# y6 ` { 7 h$ b( { t* n% k MessageBox ("Get Poke Unsuccessful"); 7 M# a: N6 U7 Q" \ return; 1 _# e* b& G. ?' H }- E4 x$ {9 m9 y1 q2 p; |3 A
9 N. B" G8 Y8 P6 K2 U2 u5 ]/ j/**************************传递数据给extend**************************************/ . X/ d, ]' a$ _) i pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 3 H& X1 Z2 T* y& b$ d) p7 I * M8 ]/ `8 s+ X1 w
valueStr = SysAllocString((WCHAR *) L"1232"); # y3 [7 ]% u8 q- p- L VariantInit(&pokeVariant[0]); & O5 y& Q; Q! t; N9 X
pokeVariant[0].vt = VT_BSTR; + p3 j8 W W! {3 F3 E pokeVariant[0].bstrVal = valueStr; 9 ^7 F& n- q2 ]* h 1 [, D: n/ y3 z1 N) b8 W6 H itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");* h; v+ N& i2 N
VariantInit(&pokeVariant[1]); * x$ t: H3 O& D" k- h- a/ b8 W
pokeVariant[1].vt = VT_BSTR;4 m: z$ y7 a Y: g
pokeVariant[1].bstrVal = itemStr; 0 {( E* m# K6 ~! I$ X$ q/ W! \* F" a* `1 x. o( r9 M+ `' k; T" U
topicStr = SysAllocString((WCHAR *) L"system"); $ K( |; G8 m% K/ C$ H! S VariantInit(&pokeVariant[2]); * W& {: n3 j" ^ pokeVariant[2].vt = VT_BSTR;: U7 y9 |- N) p& b6 X$ `: s
pokeVariant[2].bstrVal = topicStr; # ^, u" `% ]! j1 i1 _) | 0 E5 x2 d' J) O: c$ K/ R! {// Set the DISPPARAMS structure that holds the variant. * t3 s( ~; M$ k" e" m' D 9 o. a& L% i. | h6 u# b dp.rgvarg = pokeVariant; o" m# d$ W2 ~$ q# `
dp.cArgs = 3; 8 z& @" a5 X/ E dp.rgdispidNamedArgs = NULL;% x) F5 _1 t1 b. R; p- p
dp.cNamedArgs = 0;& q, \2 y' f9 X! T D1 `
+ h2 F3 {% R5 r3 ?// Call IDispatch::Invoke(), F0 f! O/ ^# g# @# T- P$ ^7 l
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hr = m_pDisp->Invoke(. D6 Q5 Y% {" V* p
pokeID,8 p2 V$ T4 \- c* a M& Y" U8 {* Y
IID_NULL, 4 c$ V) B7 K" n( G LOCALE_SYSTEM_DEFAULT,! \$ P/ T1 m! y2 H! Z) f& w
DISPATCH_METHOD, 2 I! F: o% V9 V! l &dp,6 _: D0 T, d8 z0 R
NULL,! t) K0 E+ H1 G* z& B
&ei, + E% f# I7 [) @- x; j7 N5 F T &uiErr);/ T4 H( S4 o+ X( K+ i) M Z
3 W( I3 ^& O' k! {% W L# H SysFreeString(topicStr);: \( k! v$ m3 \
SysFreeString(itemStr);& h) R* ]# v" g& R& f' x
SysFreeString(valueStr); # T, Y$ T+ L/ C- t8 Y# N . J" ]( r& X5 d* |. x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??? `5 R9 L. h8 @' @# A \' a
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???? Y4 E/ V+ \- I/ ~
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2.这是request的程序4 ]1 `2 k! X e# V3 b8 r
// Request a value from Extend! `1 g) L" r' \1 ?) L/ I
// U: w) p, k5 L- Z" ~// Initialize the variant that will hold the BSTR. Set the variant's ) @! X. K/ v( R8 ]7 ]# f// type flag to indicate the fact that this variant holds a BSTR. Place the " q9 @% T# s& \ e. K# ?// BSTR into the variant structure. 1 m) b C6 u0 ], z& e/ O* {2 j @/ x" d& i: ~( N; b1 [. `3 u requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);2 {* L( k* l) o; C
* u- q- X4 r2 D/ ?/ k itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); . X: M5 a e- V VariantInit(&requestVariant[0]); : j- S& m* |$ M0 g& {0 r2 s
requestVariant[0].vt = VT_BSTR; 1 \( r; V# r8 V, U requestVariant[0].bstrVal = itemStr;" O9 [* Q H# q$ ^! W* f
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topicStr = SysAllocString((WCHAR *) L"system");' w; ^' g$ h- k, |9 y3 V4 Z
VariantInit(&requestVariant[1]); " N7 l9 n6 y1 Z6 I/ U requestVariant[1].vt = VT_BSTR;: r- ^# p" k, I8 e; {
requestVariant[1].bstrVal = topicStr;! y6 P. y4 _# F* @! ^8 \
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// Set the DISPPARAMS structure that holds the variant. ( C) y* t9 A, p# C4 ~! m) A: V( R9 n) ? " q- ]# \0 ]6 ~% T& K6 J dp2.rgvarg = requestVariant; 4 U% D' K9 l" B2 [! R A! S! i dp2.cArgs = 2;4 N# L' m6 C2 @- Q& H8 M2 ?' F! |. e
dp2.rgdispidNamedArgs = NULL; 1 x1 y) S- ~+ ^* E dp2.cNamedArgs = 0; + H" x: K8 ^ p. A9 |% [ b& m* m+ N
var.vt = VT_EMPTY; 8 v/ v7 N# K9 H 8 s7 V" v, O0 t3 K# D4 C/ z// Call IDispatch::Invoke() 2 N7 y+ V& X# R+ B& n, `. H) n2 V6 h8 w; }+ z7 V; ~$ y! z6 r
hr = m_pDisp->Invoke(, G# `; K5 k. {% h8 X
requestID, 3 ?. K1 \" @, [8 Z' n( u IID_NULL, ' q9 i a9 c' x% H LOCALE_SYSTEM_DEFAULT,0 C& y/ H# ~5 g$ w; R) l+ i8 Z. u
DISPATCH_METHOD, 4 R# Y8 A( ^' R1 a t( V* ?& |' ~ &dp2, $ Y7 G7 K% }0 Z! z+ u+ |4 i/ I7 M &var,, R8 @$ f4 N% J0 ?# w; x
&ei,9 V5 k" `* A2 X" I7 g6 |* Z
&uiErr); 1 m Y& ?+ A4 U& s4 l8 e 1 N0 y) `7 I% `7 Z+ R! y6 Y/ }) n SysFreeString(topicStr);2 W8 J: T" i; _7 [$ n
SysFreeString(itemStr);7 \7 K) f/ I6 w3 N/ M
请问该程序是获得extend里面的哪个值? + N0 N& z3 Q' s& O5 l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????