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: M2 e9 l$ L& HName = (WCHAR *) L"Poke"; J- I7 B2 S# d6 C 4 e, ^1 z5 R# | hr = m_pDisp->GetIDsOfNames ( 7 Q5 p9 ?, S. n! r, C& u IID_NULL, // reserved S3 @- T1 x! e1 U9 t5 W2 F &Name, // Array of names to get IDs for- D `! ?8 a( w" N5 u
1, // # of names in the array4 _& }/ K6 P- Y1 `+ ?
LOCALE_SYSTEM_DEFAULT, // System locale % _3 ?1 M) Y+ Z# x3 T &pokeID); // Array of IDs to fill on output3 M: Q& V/ \8 o7 M, @1 ?: X4 z
( J5 U6 K* G; k) i) c if (hr)7 c+ d# S E, b1 e' r
{ ' z2 }; y" ]: [3 k0 Q+ @1 S w MessageBox ("Get Poke Unsuccessful"); 8 s8 E( I/ q6 a* L! P1 f0 g5 T) u return;1 j9 y: P7 _/ Y/ p6 w
} + M; Z6 @0 m8 f7 X1 y7 |+ x; o( C! O3 R. C
/**************************传递数据给extend**************************************/' X' g* a- t8 s
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);' a9 N) y$ C, W3 ~5 \
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valueStr = SysAllocString((WCHAR *) L"1232"); % `- L5 R/ \- e' @% e VariantInit(&pokeVariant[0]); ! m1 u" p) H J# U# c; k
pokeVariant[0].vt = VT_BSTR;6 q: {8 a+ p4 O# F ~; W" u
pokeVariant[0].bstrVal = valueStr; ! X0 \! d' c; @5 h# {4 J- R/ a# _ $ Z" O' S& Y" w& T itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");, `0 C7 {4 G4 p& w3 P! a8 q2 e
VariantInit(&pokeVariant[1]); ' d# T5 [" }! m- U# I. c
pokeVariant[1].vt = VT_BSTR; ( ~7 }3 a* N) d5 T pokeVariant[1].bstrVal = itemStr;. z0 q4 _& q7 u. s) Q( C+ E d
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topicStr = SysAllocString((WCHAR *) L"system");3 v1 Y- b$ Y' h, s# }9 I* \' e
VariantInit(&pokeVariant[2]); : n$ d) w6 y) Z- s' h; {3 M4 o
pokeVariant[2].vt = VT_BSTR;$ W( d2 @1 C* U/ r
pokeVariant[2].bstrVal = topicStr; : p: y# Q P7 M, M / S5 p' e! Y+ w+ m, K' p6 R7 g4 i2 W4 D// Set the DISPPARAMS structure that holds the variant. . U- H+ z( C; S9 m T ) l0 T+ k8 V9 M& C/ p1 c- _# c dp.rgvarg = pokeVariant; 0 F U( j& L) p* S- p3 w) |& O dp.cArgs = 3; 7 A4 B& x' }$ G dp.rgdispidNamedArgs = NULL;! U5 C0 O1 K, b
dp.cNamedArgs = 0; + j4 }0 r B4 J& q! p; u & N F2 x+ `$ J/ r8 W// Call IDispatch::Invoke() ) N( _3 }8 |/ O" a0 ?/ d1 g, `: h4 ]. X
hr = m_pDisp->Invoke( 1 h( e2 m: H, i pokeID,; p: D& l5 [7 Y: ?$ N
IID_NULL, 7 G, n' a7 x: W2 ?& Z LOCALE_SYSTEM_DEFAULT,; r- ?( E( x. }1 g3 t% M# m
DISPATCH_METHOD,2 \# B6 D; y$ K6 y# W, O; Y
&dp,$ a) ]6 `2 v3 {. G) s! Y
NULL, % e2 d: r, W2 D8 d &ei, " r# W i% G) l% I2 y &uiErr); $ U7 E; f8 ?( y+ z7 N5 J2 d! U$ _/ s; a, I/ a. F
SysFreeString(topicStr); # L- M A2 `0 m: e% F SysFreeString(itemStr);; H* i2 B) n5 [$ g& G% O
SysFreeString(valueStr); 0 o: D j8 E2 T5 H, e + v6 c; f5 J ^6 s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??? : T s& s) m6 Q+ [ c% P/ u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????* B5 n# a6 P! B
9 I7 t- B7 Y; J( Y 1 \ D% i+ X) W% s% i# ^2.这是request的程序5 D' Z5 f R9 b# A* s8 K0 ^* ?) V
// Request a value from Extend 0 J9 F) [9 X9 Y//' C8 T# W6 p' Z6 v
// Initialize the variant that will hold the BSTR. Set the variant's B# c: C* n0 z) z
// type flag to indicate the fact that this variant holds a BSTR. Place the" O) B' x, L6 u% M3 s& r: a
// BSTR into the variant structure.9 U5 |& }: j2 U% e( ?! q$ v
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); & Z! @, l4 v" p- L0 ~: D: ~: A# | 8 P. x6 Y7 Y: v5 u# ^8 b1 g
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 7 ?7 e0 V$ Q" _; e3 e5 t* ~ VariantInit(&requestVariant[0]); . U! C: S. W1 D! c3 A
requestVariant[0].vt = VT_BSTR; 1 \+ V3 t' F' v# K; ? requestVariant[0].bstrVal = itemStr;" C- l) f+ O) h
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topicStr = SysAllocString((WCHAR *) L"system"); ! t Z% k& h9 S8 a6 m' ` VariantInit(&requestVariant[1]); 0 b+ j4 Z# m6 Y( G requestVariant[1].vt = VT_BSTR; - c4 Y- A3 k' F# E( z! F4 m ` requestVariant[1].bstrVal = topicStr;. `& f0 J+ ~( M% r7 I; b- n* r
# j8 T8 J8 _& Q) v" W) w) ~2 v% ~// Set the DISPPARAMS structure that holds the variant. 5 V- q& D& U6 M5 l% K4 M* l: ^9 ~- d+ J) D _( N3 p- d1 `
dp2.rgvarg = requestVariant;+ X) c9 m6 J( b& j" F2 u
dp2.cArgs = 2;+ m1 m/ I i6 Q2 f7 I/ o
dp2.rgdispidNamedArgs = NULL; % C& }7 ^# A4 Y f+ B+ z) R dp2.cNamedArgs = 0;( _( F* ~: {/ L3 T0 N
( h& F: f5 q9 k% H" S$ A var.vt = VT_EMPTY;& ?4 O" f W0 x) W. R