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: p4 X" W6 j( W1 I6 v
Name = (WCHAR *) L"Poke";: x! ^6 c5 A! v% b! J* T
# B- h( ], f" J. u) t9 H$ o hr = m_pDisp->GetIDsOfNames ( & c9 w; R6 j7 R' K7 S IID_NULL, // reserved 5 a* j! d! Q1 m &Name, // Array of names to get IDs for 1 i; }* H: z! Y5 [6 l 1, // # of names in the array- y3 ^4 y& D) q' f
LOCALE_SYSTEM_DEFAULT, // System locale- u- V5 v' @# k; g; `/ k* V" }
&pokeID); // Array of IDs to fill on output4 p K, X& ?5 m( F" J' F
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if (hr) 8 z4 H v5 Q4 ?" q% W, z { 1 A. I: x$ p7 h- n MessageBox ("Get Poke Unsuccessful");9 t1 \* `) z$ W% j
return; 7 a* c4 A. w0 ~* w } 4 F. W# Z4 o! k) Q. [# q4 q( N% I' e: U- z+ h' z
/**************************传递数据给extend**************************************/* ?7 M. _. J# i3 x( z0 a( h
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);+ o3 Y( H2 N' q9 n
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valueStr = SysAllocString((WCHAR *) L"1232");( l6 ^" _/ v0 B9 K' ~( e
VariantInit(&pokeVariant[0]); & \0 A- T( F9 I3 [) j, x9 s
pokeVariant[0].vt = VT_BSTR; 2 F2 C% t$ z$ `4 m7 X pokeVariant[0].bstrVal = valueStr; M C& R( X% L* t5 j; c * X/ {2 w# K) ?+ K itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");$ E' Y& ^9 O. O4 g! @6 w
VariantInit(&pokeVariant[1]); ; ~' p# u6 a H" x/ F pokeVariant[1].vt = VT_BSTR;9 ^& c3 p* Y) @
pokeVariant[1].bstrVal = itemStr;& ~7 Q" }+ m$ {$ A- [! q& k
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topicStr = SysAllocString((WCHAR *) L"system"); # j7 V$ d3 T; P VariantInit(&pokeVariant[2]); * ^5 ]3 ~4 q2 P$ o, X- L3 h
pokeVariant[2].vt = VT_BSTR; + |3 _3 A9 T3 V, {8 R! l. u# ? pokeVariant[2].bstrVal = topicStr;) R' h: `. o7 Z- t% z9 X/ R9 K
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// Set the DISPPARAMS structure that holds the variant.% L7 ]1 Y% P+ y* ^
, z/ i$ U. K( _% {
dp.rgvarg = pokeVariant; 7 B( |* t" @: e9 h; }1 [- ^ dp.cArgs = 3;0 i' g) H: w, j0 S3 v) s% [( U
dp.rgdispidNamedArgs = NULL; # h& ?" T; l" K5 a+ d8 W dp.cNamedArgs = 0;, f- v' M( U, V {: `; R% H8 t
/ A; P. t7 `+ b! C# ~. D* g// Call IDispatch::Invoke() % n6 e- c6 @9 c4 q7 c& b( r! q2 |& ^- s0 v; C7 t
hr = m_pDisp->Invoke( 1 _. `3 d% [. o, l. | pokeID,+ \1 C& u% e, F4 c0 O- n4 j" C
IID_NULL,- o, H; P' p- ~/ [' T; F1 M
LOCALE_SYSTEM_DEFAULT, ; T$ S, A# }0 i) k DISPATCH_METHOD,$ X5 p) R/ ~+ q* `6 T
&dp," d" y0 X4 l# u/ I3 N' h3 Z
NULL,( f2 B# R; ?# C3 C, k/ D
&ei,/ x7 B! p6 ^5 j" q9 s! ]& W, Z% `
&uiErr);4 h7 Z9 a" x, @8 C
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SysFreeString(topicStr); , R6 D( Q/ V9 U Y/ I# |+ _ SysFreeString(itemStr); + T' A" m4 |$ z. ?' d8 t SysFreeString(valueStr); 5 K( ]' W P9 j5 U* n9 v8 l6 a; h% f* o
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???. q/ m" x( v1 |* w6 V4 d6 C( e
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 z, }4 p" o8 C
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2.这是request的程序 $ m2 _1 v1 R/ B& M! e7 b. f4 Q// Request a value from Extend' C! v9 I/ L& x. Y2 ]& s
// ; K" _7 X( ~9 V! [# _5 i// Initialize the variant that will hold the BSTR. Set the variant's4 c/ S a; o7 m0 b( T( G
// type flag to indicate the fact that this variant holds a BSTR. Place the ' ]; p$ b% U) w0 S; |. A9 q// BSTR into the variant structure.# u, L) Q: m- `9 ^( Z
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);5 A, A: V: {) R+ P' u; Q; C
0 _' N& u# e& b y8 E9 ] itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ]4 T e) z7 ?' N1 _
VariantInit(&requestVariant[0]); ' d+ [* U# x+ G% D/ a# i0 v
requestVariant[0].vt = VT_BSTR;2 Z4 k( M4 r3 K7 o
requestVariant[0].bstrVal = itemStr;& W3 g* A! s" h& V6 ?. R
, e3 L4 g8 _7 J; w" ]8 O" }
topicStr = SysAllocString((WCHAR *) L"system"); 9 J9 ?& h" k8 g VariantInit(&requestVariant[1]); 5 \# ^* i& H/ Z! v/ u U: `
requestVariant[1].vt = VT_BSTR;( |) a1 k% B# W# [' c
requestVariant[1].bstrVal = topicStr; : @4 [) M" {2 m T* j" g0 C) t" a/ J- w" E% u5 A, ~/ }. {
// Set the DISPPARAMS structure that holds the variant.) @( M8 V* A7 ]2 P/ H