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：+ M2 P6 H8 \5 B) S: K
Name = (WCHAR *) L"Poke";* K: |9 F. N. C1 c% S! F% }8 `3 u
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hr = m_pDisp->GetIDsOfNames () O$ |6 s( R" D' E! a# }8 [
IID_NULL, // reserved : ]0 @( q* J# {& y. I5 ?$ _ &Name, // Array of names to get IDs for- v0 J6 h: \0 [) M0 P5 e o) ?% i
1, // # of names in the array ' j/ y, F+ o2 i- w9 G LOCALE_SYSTEM_DEFAULT, // System locale$ U; x) B* B% G
&pokeID); // Array of IDs to fill on output + V3 x5 o3 y: J1 O $ n& Q6 S+ M5 |4 Z2 w$ I) `/ z) Q/ M if (hr)1 u3 [6 J9 B- s% I4 b
{ , u8 I) i* E0 ^3 y MessageBox ("Get Poke Unsuccessful"); 3 m& [1 p/ P2 b; t& {1 ^- k- S return;, U }, }1 U8 V- \8 y- ~ u
} 5 E$ h" z6 G% j7 T! N+ Q) D! R5 G0 d( O5 r
/**************************传递数据给extend**************************************/ 3 K) }" S; r b$ B pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); * _/ I3 E( R T- t - l, l- O! J7 v5 _5 o valueStr = SysAllocString((WCHAR *) L"1232");( T5 w8 u0 q$ O6 Y3 K& b4 ]5 {2 A
VariantInit(&pokeVariant[0]); 3 t+ X, y) J' K
pokeVariant[0].vt = VT_BSTR;! G+ ~: `* }- f+ u; U
pokeVariant[0].bstrVal = valueStr; 8 |+ R l$ f2 j5 P" z1 c! [/ V% W, u7 P k$ M M6 E: \+ P% r
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ) m( O% y8 |% F. d, Q VariantInit(&pokeVariant[1]); ( f0 i5 n; i2 S8 d6 b) n pokeVariant[1].vt = VT_BSTR;: U Y5 |0 h) \. a9 J1 x
pokeVariant[1].bstrVal = itemStr; / k0 g( {4 J* O. g 3 u [( c& X* N8 r8 w3 H( F topicStr = SysAllocString((WCHAR *) L"system"); + q7 I0 T( E$ U) E* M) \ VariantInit(&pokeVariant[2]); 0 ~! k- b) U) k2 b% z
pokeVariant[2].vt = VT_BSTR;2 T" L, a" N; i3 L
pokeVariant[2].bstrVal = topicStr; 4 ^2 w, h% j! i1 A h" w! l7 F P4 ~8 h* d: H
// Set the DISPPARAMS structure that holds the variant. & ^4 O2 x" y5 V+ T( q. m 8 \& R) I+ [, S9 `& L' K7 r dp.rgvarg = pokeVariant;! g* t' i0 J( \6 _: _: ?7 ^
dp.cArgs = 3;# a- s! c. }! K$ E. m
dp.rgdispidNamedArgs = NULL; / l: ` I: H/ X6 }1 `$ B. M d dp.cNamedArgs = 0;: F( m" d3 T5 k
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// Call IDispatch::Invoke()$ g; R) i4 \1 M
1 G# U( I( z( Q" P hr = m_pDisp->Invoke(, Y4 N: v. K" I, c* q, D
pokeID,4 f: E, H7 ?& C/ t
IID_NULL, 7 X% u9 n) h! G0 |6 p; N4 [ LOCALE_SYSTEM_DEFAULT, ' g" ^5 ? ?9 [1 Y/ ? DISPATCH_METHOD, ( {9 u+ b9 H2 `1 P6 J" l &dp, ! l4 M I7 `" b3 D% ] NULL, * {$ Z' {7 z, D% v4 y &ei,4 q* g6 P: e1 r( I
&uiErr);- B) C( t% d& }6 ]1 ^9 d' a' z
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SysFreeString(topicStr);" c h+ B. J3 [# q) s3 \
SysFreeString(itemStr);. z% x+ p( G& y! W# Z! M1 f
SysFreeString(valueStr);6 K M! o/ w& p" {. t
1 i9 r3 O& A, V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？？？# S H% o7 `: c# N; Q
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？？？？ / u, r- F4 u$ D" }' S/ j! N$ R9 ~2 }- g+ E4 V. i- _! }: a
& F& J: Z8 K _6 s- n( X% [2.这是request的程序 , E# E. W; Q5 n4 C! l( Q( g4 g/ W// Request a value from Extend1 l a9 o& x4 Z$ r9 }
// $ _0 v* m9 ]8 \* @! N: o// Initialize the variant that will hold the BSTR. Set the variant's0 L7 E; R( f5 h/ ~, q( p
// type flag to indicate the fact that this variant holds a BSTR. Place the * L3 | O5 n" u9 R9 R4 i// BSTR into the variant structure.1 ~9 Y, h$ F4 o% @2 B7 ~
& K5 ?8 R8 H/ w$ W6 r# @ requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ' Y% f ]. d5 n& P 3 U0 S s4 o3 W" ~+ w
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); Y% R2 R. }9 u4 }2 {; m
VariantInit(&requestVariant[0]); * B/ v/ L5 p, p requestVariant[0].vt = VT_BSTR; / z# P2 x! E( J, j7 x2 x requestVariant[0].bstrVal = itemStr;( h5 g7 }1 W; J6 G* D/ G& s& Y/ S7 X
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topicStr = SysAllocString((WCHAR *) L"system");) n0 z: [+ a- @3 n0 S1 Y# x
VariantInit(&requestVariant[1]); ) i: ]9 _' S" C0 F; q8 v! l- O
requestVariant[1].vt = VT_BSTR; , ]* [; v( k/ W7 d- J# n m; G7 w requestVariant[1].bstrVal = topicStr; . ?2 t; Q. B c* y8 y/ Z : G3 ~0 L/ A1 f' ^// Set the DISPPARAMS structure that holds the variant.) U: e& f4 ~. k$ u
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dp2.rgvarg = requestVariant; 5 A7 H3 i7 j. p/ a# |$ r0 D dp2.cArgs = 2; - a j* r; z. ~ dp2.rgdispidNamedArgs = NULL;/ }; v) k' O" e9 v% Q
dp2.cNamedArgs = 0; / b1 W6 t( f' s! a1 W! T' ~5 n1 I& t1 q; @0 g/ b# b, d6 y
var.vt = VT_EMPTY; : {% ~, }5 `- g! I$ b: B( ]- Q$ w- Q( Q8 g
// Call IDispatch::Invoke(); |: E# x$ J+ X9 q+ M
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hr = m_pDisp->Invoke(4 ` Z7 [. T9 U6 x
requestID, ) [0 w9 l" G% N* Z1 j IID_NULL, 1 B7 K. |- Z8 c# X LOCALE_SYSTEM_DEFAULT,# v- _ L$ s" T1 M
DISPATCH_METHOD,: }) c, V7 `& }6 q' Z. R0 ]2 K
&dp2,6 q6 M7 z+ L, T- B& u" h; S
&var,3 @ x( f2 J4 R( D7 C9 h
&ei, 0 u9 b$ ?# s0 {% m. e( o &uiErr); ) ?, m! B/ |5 G, S" M- t * ]2 A, k' q. g) }, R, P SysFreeString(topicStr); & C) D3 ]5 _; _* X SysFreeString(itemStr); }( `% I r! k+ u$ w+ J. y$ V请问该程序是获得extend里面的哪个值？ 8 F' F# \, R: }+ A8 `% ^8 y0 o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？？？？
发表于 2008-11-25 19:37:03
