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：! a3 c0 b; E6 h7 H( w, f
Name = (WCHAR *) L"Poke";& H/ x& A% A1 q$ c
0 H0 v8 I* [) _; W s" @( ^ hr = m_pDisp->GetIDsOfNames ( 4 L# t* P: ~8 A1 Q8 d& g( o IID_NULL, // reserved7 d, c0 `4 a) G) P1 Q% y( a
&Name, // Array of names to get IDs for* p0 c( [0 \/ p# I' P- s5 |$ c
1, // # of names in the array7 `: p4 z& U, i+ F5 Y9 H
LOCALE_SYSTEM_DEFAULT, // System locale3 W2 D9 C. M0 W
&pokeID); // Array of IDs to fill on output% V, t/ D2 D) ^! f3 }
7 C+ s$ a/ Y _4 o if (hr) T' P) a% m& p4 t. m
{ ( O5 x4 C5 `# J; ?$ z k MessageBox ("Get Poke Unsuccessful");6 W% I5 b$ W) ?
return;1 K0 H/ @( \" O
}: [& j4 Y7 e8 m9 N
* C/ x9 U6 {2 }- ]
/**************************传递数据给extend**************************************/) b2 O8 A: W1 e5 z' I& k) s, p) \
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); & E0 t2 A. d% N6 V+ n/ l1 ? : M$ l& I& _7 H valueStr = SysAllocString((WCHAR *) L"1232");7 D+ _( f# i( }4 {- |
VariantInit(&pokeVariant[0]); $ c. L: z p6 c4 ~
pokeVariant[0].vt = VT_BSTR;" h. Y; C8 F; ] A- h4 k
pokeVariant[0].bstrVal = valueStr; * j& x3 ~! ]. @ X ]! v2 D : y( Q3 ?- l- Q$ z& R itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");; E8 ?6 b$ y6 G& Q0 ~
VariantInit(&pokeVariant[1]); . i4 W! l+ Z& r/ o; V- G# Z pokeVariant[1].vt = VT_BSTR; - S! }8 u' v g pokeVariant[1].bstrVal = itemStr;7 c; g, k5 X6 v3 }
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topicStr = SysAllocString((WCHAR *) L"system"); 3 ], x3 D8 _. n VariantInit(&pokeVariant[2]); 3 O6 k1 G: N# i- m& w' g
pokeVariant[2].vt = VT_BSTR;, ?1 _, Y# ^ t/ ~( O2 o, b
pokeVariant[2].bstrVal = topicStr; / S: a# M) v7 S0 o+ a+ q6 I8 c8 n6 V' v t. z
// Set the DISPPARAMS structure that holds the variant. 7 A5 J4 ], E) D% M- B7 W& M% z) Y9 x3 O: T
dp.rgvarg = pokeVariant;. o7 U7 U6 e/ }5 h, |1 ?
dp.cArgs = 3; ; Q* Y. T' |/ ?% {; ~ dp.rgdispidNamedArgs = NULL; * u, ^8 P+ p# W0 q, f dp.cNamedArgs = 0;% S& P; O ]$ _+ u( R! L. l3 L7 w
! [' w/ K9 ] J1 Y9 A// Call IDispatch::Invoke()" z$ @, O. _) y M" l+ a3 {$ Q# @
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hr = m_pDisp->Invoke( 9 C2 |9 d! C1 c pokeID,/ G% m$ g2 p+ \! e6 J0 F" k& s+ f
IID_NULL,6 H5 D( K0 v0 J
LOCALE_SYSTEM_DEFAULT, 8 ^2 C' X0 F6 X0 b# J/ m: R5 m DISPATCH_METHOD, 7 e7 a! p4 p) y1 E+ K. ^7 @- V- O &dp,% b$ y: V+ @& k8 {3 `7 x
NULL,+ d, s# M% O! j
&ei,* R+ r) k* C, _
&uiErr);4 O+ q" p# N9 [0 |. O# F+ M) h
+ E7 u, o1 \' d+ i
SysFreeString(topicStr); D5 f. j8 I0 `/ R1 A" a" F/ O% R2 i
SysFreeString(itemStr); " e- Z6 L9 |' D | SysFreeString(valueStr);: y! U+ I* {, Y! _! W% _0 E
2 R% G( N3 I0 y2 i% r% U
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？？？ - c' ?1 _ j- M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？？？？& a' V, _6 V9 k" K( @, m; ]# `0 J
' \0 r! _8 [/ C5 i
( r8 K$ \) Y/ U' s* { ^ ^& n2.这是request的程序 & c% l% R- s8 Y- n// Request a value from Extend : ?( H# ^$ c! g// # T- w3 K0 o3 S1 e0 P, N. J// Initialize the variant that will hold the BSTR. Set the variant's / |6 H6 H' j9 L8 c. a& [7 O// type flag to indicate the fact that this variant holds a BSTR. Place the) j- Z5 h0 {9 i4 `) [% K
// BSTR into the variant structure." K( T, c6 ^% h! D9 U
/ ]) f: @2 o, J( [7 T, P+ c6 L
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);! ~) O; x1 t( P8 g
9 F* O2 {3 k" E% i) t itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");# u* x3 M. e/ b4 O5 b1 ]" x E
VariantInit(&requestVariant[0]); 2 T! c" H: ?$ B* `5 L requestVariant[0].vt = VT_BSTR;; v1 L3 M7 O. g# B" D
requestVariant[0].bstrVal = itemStr; 5 V. e: e) B9 f W1 G! M1 W* p' H% `
topicStr = SysAllocString((WCHAR *) L"system"); $ n: q2 E+ b' W! Z, [ VariantInit(&requestVariant[1]); 5 [8 i$ H+ N2 W requestVariant[1].vt = VT_BSTR; , C* G2 E/ E2 U, z- C2 I requestVariant[1].bstrVal = topicStr;: |; O8 k( u! c* k
: H3 b- I9 l- G6 p* R
// Set the DISPPARAMS structure that holds the variant., {' P, B% v5 G- B9 D. b! J* _
( s8 A2 y0 m1 k" d$ ]3 B' [3 w dp2.rgvarg = requestVariant;# H* `8 k8 G. j, _# y0 X$ U0 t
dp2.cArgs = 2;7 Z: ^7 }; c, v6 B4 a) Y/ V
dp2.rgdispidNamedArgs = NULL;" y2 s2 S( f9 l! ^
dp2.cNamedArgs = 0;( n6 g/ z8 x3 u- f ^2 H
. [) N9 d0 q2 a+ q
var.vt = VT_EMPTY;; `" d+ p% L, ~+ n6 s3 e
0 }! l9 h( n* Z
// Call IDispatch::Invoke() 8 x7 H) g4 Q8 K5 G2 [1 i' G3 B# H7 j$ J( q/ \; B6 _& ~9 N
hr = m_pDisp->Invoke(* U, }, }; J" l3 t8 g; Z
requestID, 8 h6 }' T- O4 c9 a; F/ L# w IID_NULL, * a/ W% U( \. S; D+ n0 k: E LOCALE_SYSTEM_DEFAULT, - C( u; g" C% _, Y7 y e' X8 w DISPATCH_METHOD,+ H. r# U! i: g4 I
&dp2, ) g1 R+ g% X5 |3 G, h. g &var,6 g) B/ {7 \5 ` y- G" |
&ei, 8 ^: {6 M8 V/ M$ e &uiErr);1 [; O2 [, L/ b& P V4 ^- d
2 E. f5 ?! R9 l( _& X SysFreeString(topicStr);1 U& u- N7 K9 G2 f- n
SysFreeString(itemStr);/ i+ [3 v, B( p, p; \0 i4 _" e
请问该程序是获得extend里面的哪个值？ ) l- x- @4 F9 u" [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
