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: % z/ x, s+ e I& L) \" R! }Name = (WCHAR *) L"Poke"; ! q4 Z! K6 l3 @: ~; P$ I ; ^ H0 `* F* G- {) |0 a- R hr = m_pDisp->GetIDsOfNames ( / O: ]7 J. J! C& c IID_NULL, // reserved; M$ u Z- | K; A' J
&Name, // Array of names to get IDs for 1 p8 Q3 ^( I. Q+ w 1, // # of names in the array& Z5 o; v# h* D5 T! g4 [
LOCALE_SYSTEM_DEFAULT, // System locale A K/ y1 s8 O$ h' E% D4 P( r- g &pokeID); // Array of IDs to fill on output 6 n8 h% }4 b. G$ ~ A8 L+ s7 S5 i * N$ a- ] Z. y5 y# n' }
if (hr), k: D& i' d/ O
{ 9 n2 W& L( B/ R, b; t MessageBox ("Get Poke Unsuccessful"); 6 U% x3 C# ?5 D* \, U1 V return;3 N8 {2 ^& M6 ~2 v6 g( k8 E/ v
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/**************************传递数据给extend**************************************/3 b, k/ M# A" z7 [1 E
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);: j8 d9 n7 @ C, }
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valueStr = SysAllocString((WCHAR *) L"1232"); : c6 M" Q$ M2 m: v. i8 {4 w0 g$ X VariantInit(&pokeVariant[0]); ~: d1 R, O8 l# d
pokeVariant[0].vt = VT_BSTR; ; [4 S; K4 T& C/ ]: x' S9 K$ A pokeVariant[0].bstrVal = valueStr;/ w: {! v4 d4 F( j) V
- E5 d: X( x5 B' I1 }5 ^1 G: [ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");- b, V. a. E7 h( }
VariantInit(&pokeVariant[1]); $ C: `. O6 S8 {& B/ j$ @
pokeVariant[1].vt = VT_BSTR; z/ }% d. O) H9 ^4 p6 @8 ^' b0 o
pokeVariant[1].bstrVal = itemStr; $ v& Q) T+ g) b( d3 D4 Q ] X0 V& @5 i. v topicStr = SysAllocString((WCHAR *) L"system"); 6 {$ y5 K6 E4 a7 W' E" d( s VariantInit(&pokeVariant[2]); 0 i$ A8 H8 _+ K. ^ pokeVariant[2].vt = VT_BSTR; - q* h! M- b b. L8 } pokeVariant[2].bstrVal = topicStr; $ A5 P" ~ h& I2 r+ A6 t; |1 w3 k8 q% ~
// Set the DISPPARAMS structure that holds the variant./ {2 i4 e, T& A! |+ O
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dp.rgvarg = pokeVariant;7 F# G1 Y, Z; y" y. ?' ?. o
dp.cArgs = 3;2 `. r& C( {- @9 T" G3 O7 q9 K3 n+ R* k7 K
dp.rgdispidNamedArgs = NULL; : r8 T( S. h( s& A/ x& j; b) X dp.cNamedArgs = 0;1 g8 C( S' X, k+ w+ X) q! s ]4 h
( w y+ P$ k8 h4 L+ G2 L; n2 K// Call IDispatch::Invoke() 1 d7 W3 h& m% d* M4 t# w) R& r- R0 N! _5 Z
hr = m_pDisp->Invoke( / \4 O) ~0 p& l* ?5 K7 g pokeID, 9 d# x; J: [/ Y2 t4 S$ S; S IID_NULL,) H% B8 b6 B- `, i( s1 m
LOCALE_SYSTEM_DEFAULT,' c5 y8 a1 Z* t s$ G9 }
DISPATCH_METHOD,: ]! p& Z- s# _# \2 e @; i7 H
&dp, , l$ i4 B! ?1 y6 ]' n/ @ NULL, 0 w, J' a! f6 P8 N7 }+ P &ei, ( o3 ]$ |: r8 A7 a, V &uiErr);" F G: }& G/ z% Y; h% T" l
* g6 x- z0 D$ C: _. U SysFreeString(topicStr);- D. c0 M7 A7 C9 h" Z4 e
SysFreeString(itemStr); : O: [2 l. l a5 ^; ~1 `. w SysFreeString(valueStr);6 X4 }2 c% A; J
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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???, ~& h9 A7 L& d* p
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????* Z" f0 M% L: G# y2 p/ ?
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2.这是request的程序$ V. d+ A. i% Z4 I
// Request a value from Extend; m1 X+ b3 G. f) U2 T
//3 [. Q* Z0 c7 E& {1 ]
// Initialize the variant that will hold the BSTR. Set the variant's* t0 ?# U* X [: V9 V
// type flag to indicate the fact that this variant holds a BSTR. Place the 7 ~7 T! ~* _8 M7 B% |// BSTR into the variant structure., Z' w. d( V7 i1 |( g7 u' N. o4 |* B
6 m6 N" P: x/ K* q$ f) v( ?3 a requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);& J: b; K" [5 P) V/ o3 a2 L- Y
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); + R- J3 H3 j" N9 p: Z! b VariantInit(&requestVariant[0]); : y% v1 C1 }* { f
requestVariant[0].vt = VT_BSTR; % H: i, o. b' c; d requestVariant[0].bstrVal = itemStr; t D% P! U- K! b, g
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topicStr = SysAllocString((WCHAR *) L"system");5 K: K: }1 F8 d# K/ S% B
VariantInit(&requestVariant[1]); 1 P" h7 g7 S' R5 h
requestVariant[1].vt = VT_BSTR; k2 k3 k) f- l" q requestVariant[1].bstrVal = topicStr; " v$ H' |" P! e& v4 _2 A u( ?* V/ l/ R! @// Set the DISPPARAMS structure that holds the variant. 6 }% V/ L+ [; v' K8 U3 M0 L: J # h6 }5 s1 L+ _& b7 y" u( b+ I dp2.rgvarg = requestVariant;9 Z/ L' @& F0 \
dp2.cArgs = 2; $ q" A+ t( B7 O) S; V dp2.rgdispidNamedArgs = NULL;* ~! ~: h4 m) j+ f( t& o8 N1 P
dp2.cNamedArgs = 0; 8 @* V1 a) [# p9 h3 }. v# t R& o
var.vt = VT_EMPTY; ) P+ u/ y. f* |+ d ; E9 e, N. i3 I// Call IDispatch::Invoke() ' R* K; }" @6 F# b2 x 5 Q: b$ f/ V3 X) E8 E2 K% Q hr = m_pDisp->Invoke( : Z; W: \( n4 {; ]- Y requestID, 7 {8 G$ J' q P IID_NULL,; |* m$ m1 Z* {' |2 S& U. J+ I
LOCALE_SYSTEM_DEFAULT, * s+ I- b' X7 {0 E4 J9 ~ M DISPATCH_METHOD,9 c# k ]3 H+ H$ q
&dp2,# l; ?5 B; _8 d6 G' I: c2 E7 }% m
&var, 1 f- }6 L$ w# u' B &ei," D4 j! `% b0 @: L5 F& W4 o$ p
&uiErr);# e. k+ \- u' j8 V( ~& Q
, I+ E7 f7 [- [; [3 e SysFreeString(topicStr);' ?" U- p% R7 l4 D8 s! x
SysFreeString(itemStr);; `* Q, p$ I0 Y* u
请问该程序是获得extend里面的哪个值?( A5 M P9 K7 B* Z/ v4 D" `0 U) f
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????