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：+ [( j) k" V9 \+ h
Name = (WCHAR *) L"Poke";, _, Y2 Q3 B/ `! u U
# @6 A( ~# ~& t1 s% P3 ]3 q, M2 n
hr = m_pDisp->GetIDsOfNames ( , Y- H0 z3 v" y( J! C5 X3 P$ M IID_NULL, // reserved; W2 b& j; N1 M9 \( b
&Name, // Array of names to get IDs for 8 r8 s) ] h; e, e; I 1, // # of names in the array$ n" U) |3 t: ]
LOCALE_SYSTEM_DEFAULT, // System locale# U" j" t$ d* Q' T T) L9 D
&pokeID); // Array of IDs to fill on output / K% I: ~7 S8 I2 G; s # c) {5 x7 Q+ _) G/ o
if (hr): Y4 \( @- m* u
{7 [ Y+ \& o+ I Q8 E
MessageBox ("Get Poke Unsuccessful");. d- d: t+ ~3 K+ C8 N d) ^
return;# ~& m. {, G% W; I6 C9 l
} " |: N4 `: N" X6 S& g } G4 o . P) t3 l; [: n+ N* S6 B/**************************传递数据给extend**************************************/$ ?' V* E" J7 C$ L4 p7 a3 b) E2 c
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); / {# f! R2 t y) t+ s7 H3 M3 ~) D $ [( n# L: N5 V7 {1 y- l valueStr = SysAllocString((WCHAR *) L"1232");4 t9 }: _1 x8 [
VariantInit(&pokeVariant[0]); . { {" d1 a8 q% {4 I K pokeVariant[0].vt = VT_BSTR; % u- U8 G. q0 Y pokeVariant[0].bstrVal = valueStr; 2 p) q# K4 C' B& O0 q/ B/ L/ R5 ]# G / K# n/ e3 b; l) d Z& @8 \9 ~! ]; P Y itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");2 h/ K* a3 ~1 t2 ?) k
VariantInit(&pokeVariant[1]); 3 s) b4 g7 ~2 A: d& X8 Y! m
pokeVariant[1].vt = VT_BSTR; 9 s$ W- U& [0 l" U, m pokeVariant[1].bstrVal = itemStr; X1 R1 R: R0 {/ K/ ?9 O+ ~) P
6 o- X* ?5 A, [! Z9 I& U0 u topicStr = SysAllocString((WCHAR *) L"system"); ; H& I* O; p1 S, ] VariantInit(&pokeVariant[2]); 6 J+ y" H* l* o( V$ S
pokeVariant[2].vt = VT_BSTR; , J% i6 z! |4 M O7 t' M pokeVariant[2].bstrVal = topicStr; : I# }+ X% q8 x$ J" M + I- O% |/ D: C5 Q// Set the DISPPARAMS structure that holds the variant. ( }" ]$ V% @0 L( m+ m- I9 C2 z+ p
dp.rgvarg = pokeVariant; , ] _ H3 X/ g4 w1 _" {* r dp.cArgs = 3; ' J$ b. ~ V0 Y& d0 S; L dp.rgdispidNamedArgs = NULL;: m* Q/ A9 H# f5 h" q& ^4 j
dp.cNamedArgs = 0; i' w: U9 ^% C
8 t# U) u% y$ d. j// Call IDispatch::Invoke() 8 F; O" k) f9 W" @/ d& q' H% s3 Q! n% Z3 o
hr = m_pDisp->Invoke(" e# x2 k1 j& u& p V" O _
pokeID,: k8 G. \# z9 P3 E/ d" H
IID_NULL, 7 B8 d( F5 L* [" w& ` LOCALE_SYSTEM_DEFAULT, 8 e2 ^2 j; k, \1 B( k" N ? DISPATCH_METHOD,5 O) F) z( s5 {/ @6 O3 c `
&dp,& P* [* ]3 n! v
NULL,5 [7 o! k% j% V7 N
&ei, 5 J& }8 d+ V8 q6 _* k: y9 _ &uiErr);! y+ a, ^6 u9 U/ M) J4 A- L
# K" G: G; B# w' ?
SysFreeString(topicStr);. v3 E& d# z- t) h6 V) ~+ C
SysFreeString(itemStr);6 l# |' K, Z5 l( T- z6 d
SysFreeString(valueStr); : o- _) i8 j9 T, ?5 g# g/ t 9 S+ r. [( [; N2 k4 q2 C7 G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？？？! |$ }/ g/ `5 y/ w: d
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？？？？9 s6 y- T7 v& ?: m3 |
- s7 Q/ b/ }7 V* s2 ?, {% L% d
?4 E3 J) k- M1 T, e. i2.这是request的程序 1 C( ~$ S+ |- B- r// Request a value from Extend 4 @( t; B. m; t8 \% w// 5 ^; s5 E" M. @// Initialize the variant that will hold the BSTR. Set the variant's M" G2 d+ u! W! E# e( M// type flag to indicate the fact that this variant holds a BSTR. Place the& \* r* U: J) n
// BSTR into the variant structure.. E! `+ m( M. C2 a
+ [: A! o& x6 W$ } ^% a' y0 m/ b requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);& p- r E3 w d4 y( s' O @( d4 v
5 _! V* ]; G. g- E
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! [3 n2 n) p, c1 ~$ G5 o/ j# S
VariantInit(&requestVariant[0]); B# O" g- b y* p( |4 v requestVariant[0].vt = VT_BSTR; % M) l: Q6 @9 z# c/ i: I# M requestVariant[0].bstrVal = itemStr; ' e) c N4 B4 r! q/ Y5 g; m6 ^! c5 Q( I3 `9 g- k/ y
topicStr = SysAllocString((WCHAR *) L"system");) d2 B; v$ {- O
VariantInit(&requestVariant[1]); 7 R+ w1 N& X- t6 Z* z; x$ \+ Y requestVariant[1].vt = VT_BSTR;2 R' R$ v3 b9 i" A1 M L7 L: Q
requestVariant[1].bstrVal = topicStr; , X8 K8 g- \7 K1 B2 p) N( G: q, N9 c& O( W% P, o
// Set the DISPPARAMS structure that holds the variant.- x* c f4 _& y3 ?0 S
$ n2 K2 I# @5 }( m dp2.rgvarg = requestVariant;5 W5 g- a9 _, K/ X+ S7 `/ t
dp2.cArgs = 2; / w2 D4 q2 ?$ a; Q) L- M c$ X4 J dp2.rgdispidNamedArgs = NULL; . N& b9 ~, X6 y. d% o: A, k dp2.cNamedArgs = 0; $ x1 M- ^% I5 v, e E( A+ M' I3 b, @* e var.vt = VT_EMPTY;1 `/ `1 P0 y, f. h: J2 \5 e
* y( B2 v, ^- ~// Call IDispatch::Invoke() 3 a, e- {. u6 ^1 v ~% q2 ^- T$ s# P. f8 H( S
hr = m_pDisp->Invoke( $ p% Q" ^* N. w0 `( F9 w, U requestID, 3 s. g# O. c% Z" I" S! ~4 [ IID_NULL, s' F0 K8 d8 T' y6 L" v: s$ S
LOCALE_SYSTEM_DEFAULT, 5 }* G% ?/ J" A) y1 _8 o DISPATCH_METHOD,* l/ K+ Z/ n# H% }4 J+ E
&dp2, ! T& i+ B% H2 n6 L/ Q! i &var,! C! o4 n9 i: E S+ `3 z# r4 S6 i4 k
&ei, # H' W n3 h# a9 ~9 @9 M; N+ T4 u &uiErr);0 v, m6 W+ G; P8 o. R+ S& ]7 ~
/ n0 N' k- m1 o: e SysFreeString(topicStr);4 g& y; s1 J, m* v" I
SysFreeString(itemStr); 1 f8 J" j# ^, T% Q& h' j9 A请问该程序是获得extend里面的哪个值？: }) K: k" d3 W& d2 [4 f# T0 K
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
