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: P ~- K- r$ K
Name = (WCHAR *) L"Poke"; 6 Y x* W. W* n3 o: O. A/ y 4 o$ B5 O" J, u- Y
hr = m_pDisp->GetIDsOfNames ( " Z# C" r1 f! i IID_NULL, // reserved . j" V2 Z$ B, h% k( A4 m5 q8 ? &Name, // Array of names to get IDs for% C o; y4 v. q" A4 e' C; M. u
1, // # of names in the array; S8 T/ h0 [2 p ]' G( _
LOCALE_SYSTEM_DEFAULT, // System locale; \6 L+ z3 p+ h6 K: v
&pokeID); // Array of IDs to fill on output. w/ `! _9 B- z
' p6 Q) @. ?$ `6 _3 m if (hr) ; |' f+ N: Q5 h" x }4 I2 ^ { & b1 n0 X9 L. { MessageBox ("Get Poke Unsuccessful"); q+ I1 S( X" H9 ]% J" j* e return;) o- ^+ H7 ~9 i& A4 d9 a
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' l7 e& c2 k' y1 N8 p2 \* Y" } N/**************************传递数据给extend**************************************/& I5 T3 ^( e( |# M( \4 ^
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 7 o0 |$ {- ]) z& o1 L / ~3 U' }" o* p! {5 Z
valueStr = SysAllocString((WCHAR *) L"1232"); ) W; z. g! H7 G5 }& U VariantInit(&pokeVariant[0]); % [2 E( r( Q( z! r8 G$ f" e
pokeVariant[0].vt = VT_BSTR;5 ?7 R7 }# v, R# R
pokeVariant[0].bstrVal = valueStr;% s" r2 L9 v+ t; A
0 X- Z7 w8 y; S' v# S itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); . C' H f2 N, i+ G: [, r0 j VariantInit(&pokeVariant[1]); 8 c# u, G7 q% p4 M5 U pokeVariant[1].vt = VT_BSTR;/ L! g. K' }6 ^& p! c, d
pokeVariant[1].bstrVal = itemStr; 1 \- j: p+ S3 J' p 0 i" l+ m: \+ Q3 o topicStr = SysAllocString((WCHAR *) L"system"); - _3 j) o" y# N) k# C0 _& J VariantInit(&pokeVariant[2]); & A5 K* I/ j3 V1 ] pokeVariant[2].vt = VT_BSTR; " n2 l) w. v F- u, a+ Y0 |- P% P) o pokeVariant[2].bstrVal = topicStr;* P8 a6 m! y2 z3 Z6 k6 |
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// Set the DISPPARAMS structure that holds the variant. / s8 a# J8 k) i, h( r! B" ?8 h4 Q5 }: b! z: A2 E' m# M: j* d
dp.rgvarg = pokeVariant; ! D. {7 N, }8 Q: Z. a+ a dp.cArgs = 3;" K; L1 _! E* ^+ M) F' p; }
dp.rgdispidNamedArgs = NULL;( _7 U: c/ g- T3 f# R0 L+ K. p
dp.cNamedArgs = 0; & J: Q |+ w2 ~6 e5 S* D/ z . O+ I% o6 p6 @6 q7 H, l// Call IDispatch::Invoke() # Y5 z7 `4 g3 |: K + Z7 L" c+ Q: |* H! i+ P5 G g) K) y hr = m_pDisp->Invoke() \ Z* O/ q: _# h) X+ n
pokeID,8 ]6 u9 c4 j$ B: R$ W& F0 H3 P
IID_NULL,) G d' E8 m7 u F
LOCALE_SYSTEM_DEFAULT, % P8 \" C* s' ~6 f1 z2 a DISPATCH_METHOD, 3 g/ g+ c: l/ W: ] O8 q &dp,. c; {9 }+ C1 Q1 V
NULL, - C4 Z9 w! Z# i) z$ v &ei, 0 h) o( X" Y) E7 G: A2 [3 d &uiErr); . S( w. l d- w! C R; P + x+ Q6 x7 O% X6 K' m7 B5 P: p SysFreeString(topicStr); S8 b H4 B; ?/ T" F ]! n SysFreeString(itemStr); b/ c3 g1 {% C# k: w E SysFreeString(valueStr); 5 \0 l2 ?8 t( e! h! H. _9 U* V' y3 {: S
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??? 7 U. L @1 z# G& i5 | b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???? 7 G: ?, \3 z) K9 f u 8 y8 R; x, r7 }' \, R+ Z( U 4 f( S- ?! a. X! v. Q0 ^7 I2.这是request的程序0 Z% r2 `5 A4 F3 c
// Request a value from Extend * [8 O/ e+ Q& M//8 L7 `; B/ S1 u( n5 d9 N: t
// Initialize the variant that will hold the BSTR. Set the variant's * E' q7 R- H e// type flag to indicate the fact that this variant holds a BSTR. Place the( L+ u; G" |; x% r- f! S; ]
// BSTR into the variant structure. / r n; p" B& Y3 Y; {) `8 Z9 K4 F8 K( x4 V2 X
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ( U# l' u9 K& L# p 7 y- B6 N j1 z' e
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");, w. `% }& f b# M" j* {* }$ e
VariantInit(&requestVariant[0]); # C( }# b; M5 X$ b# Z requestVariant[0].vt = VT_BSTR;9 R! E0 o) T* i% A
requestVariant[0].bstrVal = itemStr; ( @. o0 U1 M5 K) ~9 F5 h2 i m# q: ^+ K+ g
topicStr = SysAllocString((WCHAR *) L"system");, ]3 [- G( w6 b. Y1 u/ z: t& q5 x
VariantInit(&requestVariant[1]); ; c$ R9 P, d4 P5 U' a( ^ requestVariant[1].vt = VT_BSTR;' j# `: \5 M7 h6 H
requestVariant[1].bstrVal = topicStr; 0 |" A \( o8 o. ?8 f: h4 u+ D' S & e8 s2 ^/ D) _// Set the DISPPARAMS structure that holds the variant.* [4 M5 p. N* d2 w! ^! O
7 S& Y- B3 ]3 X0 ?# b dp2.rgvarg = requestVariant; 8 l) p0 v, t# o' |0 A& e dp2.cArgs = 2;- c! p$ \/ e. a
dp2.rgdispidNamedArgs = NULL; ' l9 A' r/ `3 _; A- Z dp2.cNamedArgs = 0; % p/ d/ i- n4 c6 ?# ] 2 P& `+ H; |: x4 f* c var.vt = VT_EMPTY;# I+ D; f }) t1 E
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// Call IDispatch::Invoke()1 y$ \+ X, i9 g) [0 s