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: 4 F4 [! P3 T7 yName = (WCHAR *) L"Poke"; 6 h, [! O+ Y) W: |' x' R) D& D 3 z1 K ^* Z! x
hr = m_pDisp->GetIDsOfNames ( 7 L5 Z" E/ W; K p# c. r- D IID_NULL, // reserved/ M2 ~; E( ^& \4 E% N- G
&Name, // Array of names to get IDs for & E+ p D) \, r y( |) e4 b0 g 1, // # of names in the array8 j3 s ?3 o. o" E& H
LOCALE_SYSTEM_DEFAULT, // System locale 7 _9 ] g8 g' Z: y5 v5 o: b &pokeID); // Array of IDs to fill on output # J6 c7 S$ r/ ? G3 _ ; ]4 ]6 ]; q- j$ o& f! t+ T
if (hr) * G9 u" {$ H3 A4 N2 E1 T7 b {5 Y( L% l ^9 P! l- e3 I
MessageBox ("Get Poke Unsuccessful"); 1 n6 G2 L6 c0 y, g0 I; ~" ~5 N return; # i, }( f8 i/ q* _ } * w I+ p v+ a ) _/ k# q, g9 \3 W- ~0 w3 U/**************************传递数据给extend**************************************/. o$ x8 Y0 u( G" M2 p
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);/ p4 d; S2 C$ Q6 U& v
- w& S4 q6 b2 S0 o, x) Q' y* U
valueStr = SysAllocString((WCHAR *) L"1232"); , y3 I V! V ^ VariantInit(&pokeVariant[0]); 1 X5 L6 M) e2 r1 N pokeVariant[0].vt = VT_BSTR; $ ]5 F! e( `' @/ G$ d pokeVariant[0].bstrVal = valueStr;, E! I) X0 {# p4 p
# J* t5 f& F$ q( H4 S# B% Q
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");9 l! n0 s& J8 N4 O4 h3 ]
VariantInit(&pokeVariant[1]); , V+ S+ W* R: E: [6 o' z6 R( d pokeVariant[1].vt = VT_BSTR; # s; A: K+ K6 k T$ w3 t pokeVariant[1].bstrVal = itemStr; 5 H4 ^- |3 N; V) D ) b5 a/ a9 c" U( k: m topicStr = SysAllocString((WCHAR *) L"system");4 t& Y6 Y$ K, B4 c' ^ y- n) @
VariantInit(&pokeVariant[2]); 3 \+ Z! d7 a: y6 f+ a5 t# s* V5 Z
pokeVariant[2].vt = VT_BSTR;5 w$ L& @2 x* S0 s5 V$ G
pokeVariant[2].bstrVal = topicStr; ) U! S9 P1 y; c+ f- h; m# q) A- t8 A; [
// Set the DISPPARAMS structure that holds the variant. 4 T* O3 w5 ~+ R! j) F& a& a* V9 ]; M r& ]9 ~
dp.rgvarg = pokeVariant; 1 y5 `: k, m2 }2 `2 ?) n dp.cArgs = 3; 2 w: g2 ?8 U# P R$ ~ dp.rgdispidNamedArgs = NULL; 7 }' Q+ _4 m4 U1 d) i: i dp.cNamedArgs = 0;/ l) `3 o! f, S3 {& D
" x i% Y, y' `7 I8 ?// Call IDispatch::Invoke()0 G0 I7 D3 x. H. R
/ N0 ?! B" S/ [* M+ c. { hr = m_pDisp->Invoke( : G! s/ L* a9 F pokeID,5 f* c- S2 z Y& }, b1 E3 e" j
IID_NULL, 4 ]! Q9 W- K' T* C9 ^( e LOCALE_SYSTEM_DEFAULT, ( G$ s4 k, c2 S- ~. g" |% C) s DISPATCH_METHOD,! U/ C. m d% X
&dp,; J4 P. F: b( B7 W- B& k) m) Y7 s
NULL, - o+ A3 ~ }+ E( ^: z &ei, % u! y7 Y: t( G& n4 P3 z6 } [ &uiErr); , D/ \- B# p) ?: P0 o$ s7 V+ b, G( D* U
SysFreeString(topicStr); 9 _) @9 N9 `! Q9 p7 l# h SysFreeString(itemStr);2 j4 f# c7 s6 C, H" v
SysFreeString(valueStr);! y/ @4 G5 C; ~; q/ y5 v
- v3 Y1 H1 K% p- d' w8 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???9 p+ [( j+ R/ C; ]1 r9 g$ y
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????- }% e& \! c& x, {) M
- z1 m. U# M8 q# s/ F4 X
$ P0 Q$ R- B5 F% f9 {
2.这是request的程序 # k7 c# s4 d2 n( t// Request a value from Extend % u+ {: J0 j7 E//0 Z/ K0 s( ?: p" ^1 q# _# Z
// Initialize the variant that will hold the BSTR. Set the variant's / k1 F$ o0 y3 R" A3 N// type flag to indicate the fact that this variant holds a BSTR. Place the" b# B( c/ u; F- f0 E
// BSTR into the variant structure.. a: B8 Z- S4 R: ?# ^
0 Z/ s. Z; O5 p( |# N0 H
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);* D8 }5 u- B$ g5 K( k( n6 D. r, u- f& o
) n) t" h% k4 H7 j itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");4 z/ h+ d+ m+ U0 `, R" s
VariantInit(&requestVariant[0]); & X# y% e8 j: K/ K requestVariant[0].vt = VT_BSTR;* l9 J% r7 d! \: i
requestVariant[0].bstrVal = itemStr; ; ?$ S+ R" Y8 O* A. u4 t U# e2 h& T! W1 J! j- \& k+ `
topicStr = SysAllocString((WCHAR *) L"system");1 N1 p1 Z9 c; n7 p
VariantInit(&requestVariant[1]); 8 Y$ K H# C6 |4 O. n
requestVariant[1].vt = VT_BSTR;, g* ~' t- D2 ?( e; c$ G
requestVariant[1].bstrVal = topicStr;6 {0 _# p; u v% I* m
' X- x2 |* g7 b/ A V& ?// Set the DISPPARAMS structure that holds the variant. ( L- ^: }+ y/ b" X1 r- w/ c+ `8 O' U6 M# m2 c
dp2.rgvarg = requestVariant; ( S" C" {6 ]2 d# p. d dp2.cArgs = 2;- x- X0 t, _4 W& R! j' y% `
dp2.rgdispidNamedArgs = NULL; 1 E6 S. G; W" R! y ^ dp2.cNamedArgs = 0;! P7 P( j! U) q" \0 @' A: I( B& v
I1 O5 d% h/ T: f
var.vt = VT_EMPTY;4 ~ w/ K1 C9 Y& u9 W, t7 W
( Q/ S* C9 G- @& `) i
// Call IDispatch::Invoke()" S; z0 e( _) T
+ B5 ~0 ^" \! S( x* s
hr = m_pDisp->Invoke(. @" e2 k8 w( n6 G
requestID, : i' _& _9 q1 N1 d IID_NULL, " r; p( @: Q8 P- l* J. t- E5 L LOCALE_SYSTEM_DEFAULT,/ \- X3 I. s5 ?( |
DISPATCH_METHOD,6 r1 R0 |- \$ n) T# D" P9 N
&dp2,! I2 _6 R8 G, y6 _) \* Y
&var,, m$ L3 b/ p) s6 V
&ei,6 f9 c: b l, p4 S4 `
&uiErr); 0 w& r8 a7 |; u) u& p! A, ~. q/ j* H* @$ X- q5 o6 @
SysFreeString(topicStr);6 P/ C" i: A7 p# |! K* p/ |' q
SysFreeString(itemStr); ! e1 Z1 O# b Q7 y请问该程序是获得extend里面的哪个值? # g x+ ^# Q0 W) \& j$ \* |+ X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????