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: , _8 d. {8 U" o& K7 [7 K, j& bName = (WCHAR *) L"Poke";2 ]+ |5 ?1 U- k, D
' s4 P3 x, [* l E
hr = m_pDisp->GetIDsOfNames ( N. o5 \* Q( P8 ] IID_NULL, // reserved . i) j, F3 j6 f5 O/ M &Name, // Array of names to get IDs for 6 n7 Y* C& P* ^7 Y1 t+ ?) | 1, // # of names in the array , ^' @, q/ B; z4 V% k; Z# L LOCALE_SYSTEM_DEFAULT, // System locale : i* L5 K' r# |- t5 x) r0 c0 |& q &pokeID); // Array of IDs to fill on output3 g- n5 Q, G; P7 Z) V1 h
- U+ g' k5 o4 `: o9 T if (hr)8 e# ~' z8 r0 \4 v% J4 ]& A' k/ g/ [6 n8 N
{ ; ~" E! E& F3 q' Y MessageBox ("Get Poke Unsuccessful");* U& P+ o/ {# q
return; 5 o6 ?* p3 _' h6 \% V6 v$ i } & k9 L7 h. y5 _% w: T* B9 p1 w! m x( T) A5 b! R' C% T1 s
/**************************传递数据给extend**************************************/" O, H9 G) c2 Z+ J1 I5 s' I
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);8 o# H9 T# A) o2 m, E
! D8 \/ a6 ]0 e6 e( {- F valueStr = SysAllocString((WCHAR *) L"1232");! b3 ]) R/ A6 S- ~2 E1 s* g
VariantInit(&pokeVariant[0]); 9 S# t0 T% q$ P( X4 W+ ?; \& b8 y pokeVariant[0].vt = VT_BSTR; / A) v7 f" R+ \ pokeVariant[0].bstrVal = valueStr; ! L1 V2 p$ t% e8 n + O- @* L. R: z! X' a itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");7 g9 R- `* `) g
VariantInit(&pokeVariant[1]); ) c% s3 z* d$ i% Q6 K pokeVariant[1].vt = VT_BSTR; 1 D7 `; u+ B) G/ A* [- n pokeVariant[1].bstrVal = itemStr;- b; e; Y% v2 @% t: W
+ j: k4 }. m0 l
topicStr = SysAllocString((WCHAR *) L"system"); / x9 g: Q/ Q2 t4 s/ \ VariantInit(&pokeVariant[2]); 2 Z- O0 w3 o7 q( [# m4 _, F% p
pokeVariant[2].vt = VT_BSTR; + w7 [! h/ ` L. w$ M1 i9 E' [; Y pokeVariant[2].bstrVal = topicStr; 5 Q2 B0 f6 e$ S7 ]$ Q( _! q: x9 X$ w8 d& Q5 ?; C
// Set the DISPPARAMS structure that holds the variant. % p5 q+ Z0 Z, f# G( I4 m+ j# @9 e5 S! t* ]3 k3 F+ [
dp.rgvarg = pokeVariant;' _0 }- w: D2 w' r9 ^6 z: n
dp.cArgs = 3; X( i) _( P: o) c% g+ j. I, |/ x& p
dp.rgdispidNamedArgs = NULL; # T- S6 N* w' | dp.cNamedArgs = 0;4 t' o E( I+ `$ h3 u
% v$ Y" C# P2 E4 c. _, o
// Call IDispatch::Invoke() 7 K# p6 z; x, U& `4 S ) f' ~" E1 M T- X hr = m_pDisp->Invoke(- ?$ L; }! Z6 I
pokeID, @% G6 w5 r- c# J" o' G- b/ q
IID_NULL, $ o5 t1 c7 B# P- l! B9 ~ LOCALE_SYSTEM_DEFAULT, % N" t- q6 v; T, J DISPATCH_METHOD, / [. i$ H2 }2 w* E& Z &dp,9 V& s' Q! ^! j( r9 t
NULL,0 g0 M I( V$ e; W
&ei, 2 @7 O4 q+ v# X$ V% v5 Y, U. q0 I &uiErr); ! Q' P& a( |3 h. \ [- u: t6 u' ` ^2 G- B- x7 E
SysFreeString(topicStr); " X+ t3 a$ K# m SysFreeString(itemStr); 7 X2 a& W8 A" g/ ?( K$ C' ^% j SysFreeString(valueStr); 0 X1 b1 s a9 t1 i) a' a( a0 p1 X5 D; Q, \" N
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???) p) f8 l0 G* y0 f1 ^
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????# T0 A6 B! E @4 R& p, W
3 e! x) |4 l" w
9 s+ L1 C) z7 R8 z- O4 F9 @) p2.这是request的程序 7 Q9 n3 J7 t0 I// Request a value from Extend4 ?7 E& O" i; t
//3 w( Y9 i7 O2 M8 ?. U
// Initialize the variant that will hold the BSTR. Set the variant's * b7 K6 _4 p; b! g: d3 I6 M6 w// type flag to indicate the fact that this variant holds a BSTR. Place the ' z5 v O* x5 W/ J g9 T// BSTR into the variant structure.8 ?' D, g; g4 G; _: Q
3 Q# _* ~9 V; L9 ^8 N# Y& C: H* s: v requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); . x! L. d- H; A+ [ 4 T* r: F- f S" g% @2 z* y: t; v
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");4 G2 `5 o! l9 Y8 ^( g3 k) w D, [: f9 T
VariantInit(&requestVariant[0]); % G+ V2 B- f7 r8 M A requestVariant[0].vt = VT_BSTR;% e ]; ~. v( }& Y, o1 N
requestVariant[0].bstrVal = itemStr; ; b0 ~; T' L8 S. [4 [/ I7 c- v" `- A/ k- m G
topicStr = SysAllocString((WCHAR *) L"system");# J) `6 o( o, ?
VariantInit(&requestVariant[1]); - F# S: e2 V7 o, ~" { requestVariant[1].vt = VT_BSTR;( F* q" f" b9 ^+ D* r
requestVariant[1].bstrVal = topicStr; & l" j T+ O. Y . a. V" T# O s* S1 ?// Set the DISPPARAMS structure that holds the variant.# J. y+ L9 }: T3 R8 c4 }3 E/ L2 B
7 Q4 I) C1 ^* S" G
dp2.rgvarg = requestVariant;8 N: s- \! a! ]
dp2.cArgs = 2;2 X; _5 y! \7 y+ H$ e
dp2.rgdispidNamedArgs = NULL; ) I4 S a5 e1 `! n1 v dp2.cNamedArgs = 0;: l9 y0 m3 i8 J3 u* a! P
7 ^, c+ }( w7 m+ U) L# k6 g var.vt = VT_EMPTY;# x {1 }9 A3 b* _; F8 b9 x
. K! C2 |% O$ w7 V2 X5 v
// Call IDispatch::Invoke()% w: C! e' F% j9 P1 E* v
5 T7 `7 |- Y* b }! r0 y
hr = m_pDisp->Invoke(2 i$ y, j2 K. k% M2 z# J* u( S
requestID,1 g$ Q9 {6 A0 i
IID_NULL, ! d$ X$ ?- N' ^5 a0 z LOCALE_SYSTEM_DEFAULT,; \5 m, R4 F" d$ C3 p
DISPATCH_METHOD, 5 Z# m' ], A( i* h; } &dp2, ) e( W6 R: H& `, S) L/ w1 | &var,9 ]* l; W5 h' Q. z( K7 C7 ^1 m
&ei,9 w" D: H% w( i3 U: Q9 c# H# j1 L
&uiErr);9 Z" P: D$ U! M% U