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：" i( U* i5 ]8 g5 V: a) H
Name = (WCHAR *) L"Poke"; 9 C2 {, |6 U' G7 X" k $ [6 P. }+ H" |5 j( X; [ hr = m_pDisp->GetIDsOfNames ($ ~1 p( d3 s3 f" W; y( {
IID_NULL, // reserved Q) R7 ?- c% _- S! V5 c &Name, // Array of names to get IDs for6 G3 k1 k* R8 f; M+ L t5 C, X0 Q
1, // # of names in the array5 F x; n$ C, D& S9 Q% V
LOCALE_SYSTEM_DEFAULT, // System locale, @+ ?9 l! v' T& _: M
&pokeID); // Array of IDs to fill on output& I2 m/ l- I2 b: k+ M2 u: Z
+ M5 n3 c( L: C) g5 t- y if (hr)# t; Y1 j+ Q U3 z Z5 N8 z
{ + N0 `- ]. O6 H7 T- i% q, C: d MessageBox ("Get Poke Unsuccessful");2 ~, ~; ]1 l8 f3 b2 ^' o
return; R* Y/ f- ?1 ]# S: j
} ' J4 S7 a1 F( _( l3 w- Y# j0 x6 _ V5 x; A
/**************************传递数据给extend**************************************/4 b0 U; n- E5 K8 _, A
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); . }8 B4 m8 V$ K2 J9 K . {+ ~0 i$ k; z% ~0 G
valueStr = SysAllocString((WCHAR *) L"1232");9 V( W3 x+ }- y- k% a* ?
VariantInit(&pokeVariant[0]); 2 R& j2 F# Z+ w3 K5 _
pokeVariant[0].vt = VT_BSTR;" G3 t0 Y5 j% i+ \4 v
pokeVariant[0].bstrVal = valueStr; 8 {; V6 J" D* a' { - b/ b0 c- B7 `) f& Q: L# X p" f1 p itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");% x) e# J; s) ]# s# g& A. `
VariantInit(&pokeVariant[1]); 6 I- p" ^2 D$ Z. ]! H6 m; D$ |/ L4 R
pokeVariant[1].vt = VT_BSTR; 8 _8 f# P$ V4 D' D7 X+ o pokeVariant[1].bstrVal = itemStr; 1 A- c7 o* `4 q2 n3 x, \% e! s- V. i" P% A2 d2 X
topicStr = SysAllocString((WCHAR *) L"system"); 0 Z( @6 ~ f1 }) b' g1 Z VariantInit(&pokeVariant[2]); $ S; o [! W- T, l* J$ v
pokeVariant[2].vt = VT_BSTR; ! b" W1 | t$ a- c# E, L pokeVariant[2].bstrVal = topicStr; - i: C7 e7 c: l' N. X' L6 m8 Y4 Z: j" w; B3 x' p
// Set the DISPPARAMS structure that holds the variant.: P2 t: p f" p
: G2 @) o( W5 T, F: `1 o, @$ x dp.rgvarg = pokeVariant; : q( ~. ]0 R- E; H dp.cArgs = 3;: Y3 A. @; {2 y9 l+ c- V
dp.rgdispidNamedArgs = NULL; 0 b9 J7 b' c# k" O dp.cNamedArgs = 0;$ C+ P# F+ n) O9 [
- V# _& m( z6 f// Call IDispatch::Invoke() / V/ Z/ I0 a4 o H- f6 z% e# d: G4 J2 f& s& w& I0 x
hr = m_pDisp->Invoke( 8 o8 C( l. _& q pokeID,- I: L4 o# a1 V. C
IID_NULL, 0 ^) h) z( q0 T S; K B g LOCALE_SYSTEM_DEFAULT,. R& A1 z/ H1 E' \1 X
DISPATCH_METHOD,- Y% R+ }3 k# a
&dp,0 F- m: t2 H0 t' T
NULL, 9 o+ x. r) ?% I &ei,; d( Y& E& Y8 G% V N
&uiErr);" ]& i$ j+ s2 H- J0 O) o
3 k" Y3 {- S) l/ z7 ^
SysFreeString(topicStr);+ U/ W% @. c* o( ~9 X
SysFreeString(itemStr);5 C7 }- z% A) X3 J# Z2 f2 p6 C) C1 g a
SysFreeString(valueStr);& f# O' l# \$ o0 Q2 h3 e( d
; Q2 _9 T- w" k6 @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？？？4 d* t5 k0 \ {& }1 N, 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？？？？ 3 z3 B, [6 G. Z1 p G* l / t7 ]6 z* S9 V5 j1 o 9 S2 @" A" h; G7 A2.这是request的程序! ~7 C4 }5 S5 K8 ?0 o
// Request a value from Extend # g. U8 [$ o9 L3 ]// / B( f& ~) d+ p2 P& D8 L Z; Z4 h// Initialize the variant that will hold the BSTR. Set the variant's z% {( Z8 H. X4 \
// type flag to indicate the fact that this variant holds a BSTR. Place the 9 n: y% F5 ^+ v6 C// BSTR into the variant structure.6 u0 X6 b5 G8 @3 f
- ^9 l7 J9 T4 l% g requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); & X X$ f& q" K! l , B0 B( U& X% z% G
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 6 P/ a0 W+ P# I* D+ Z VariantInit(&requestVariant[0]); : M/ ?2 w! ]# t requestVariant[0].vt = VT_BSTR; ( G1 _+ L( ^8 ~# _6 q. U: o requestVariant[0].bstrVal = itemStr; + \4 f- F3 ^- ^2 h ) H8 U/ j" F4 \; F b' U1 F topicStr = SysAllocString((WCHAR *) L"system");, p; L8 o+ f9 G n$ I ?- Q
VariantInit(&requestVariant[1]); , v2 ^3 B6 ?+ t8 }7 Q requestVariant[1].vt = VT_BSTR;$ `8 g) T& V0 \. A( q7 N
requestVariant[1].bstrVal = topicStr;. z: r8 e% D- N
- V+ Y' M0 {1 S3 o5 T$ K
// Set the DISPPARAMS structure that holds the variant. * M7 [0 t8 b2 p/ d+ K$ U; [0 q) }! G; y" P% E, @
dp2.rgvarg = requestVariant;, a, w# X5 `* H% g G5 {
dp2.cArgs = 2; 1 y$ w9 `* R8 g3 Q/ t8 D% [ dp2.rgdispidNamedArgs = NULL;0 V5 P) y$ h& s3 _1 N! J
dp2.cNamedArgs = 0;- d/ W- |8 A* L
& D0 X% @: @! O* R Z
var.vt = VT_EMPTY; 3 U9 q( T/ w$ [4 }, A( \7 Q) N9 O2 s* }; @' _3 ] E
// Call IDispatch::Invoke()$ T3 O# ?4 H1 o, e4 x' u9 C! ^
; U$ D% |7 b9 K/ E( e* \3 E& F hr = m_pDisp->Invoke( 7 _: f, k" n; J J7 Q5 h. H0 T% O requestID,# k0 m' R0 u6 J
IID_NULL, & `. q2 z( y$ | LOCALE_SYSTEM_DEFAULT,, z9 T( K! G8 e. e |& z% {; }# C
DISPATCH_METHOD,* `: d' d9 A9 \$ d4 D
&dp2, * R7 e3 r$ N: ~8 j &var, 6 H9 P6 \7 ?$ Z' c& R5 S4 I+ [* u &ei,1 e E# L/ p! f! s; G9 u) f
&uiErr);3 \4 [8 X7 t) ^9 x$ m* O, R
3 Y7 F2 D! w) |! C
SysFreeString(topicStr); + d, [" M/ }: }& A( b' ? SysFreeString(itemStr); / e4 g0 g# ? c( _+ L请问该程序是获得extend里面的哪个值？ , S- s5 T6 g9 u7 @6 L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
