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:- o, _4 R; c" U+ J8 q
Name = (WCHAR *) L"Poke"; 2 D" u( e' g( ~8 o 9 B! I6 d) g7 |( U) A# F0 Y hr = m_pDisp->GetIDsOfNames (4 f* S$ J1 r6 S; |; \6 a) D3 x
IID_NULL, // reserved - q( c( a; C. ~+ V5 s1 D &Name, // Array of names to get IDs for : s8 ?: \' ^) O8 M2 G% T u( u, d 1, // # of names in the array0 \8 E* O' K+ {$ g# ^5 c+ V
LOCALE_SYSTEM_DEFAULT, // System locale! D9 l/ d3 N, K5 w
&pokeID); // Array of IDs to fill on output z% s0 L0 t: C$ z) G9 H7 u 7 g0 u8 J( G0 T+ D
if (hr)$ n& {+ z3 g8 M; s% e
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MessageBox ("Get Poke Unsuccessful"); % P8 y. h5 P& P, ]3 f return; 6 A2 r( A8 `4 L; V6 S% u4 F: e } / F. @# q, q5 k# T" E2 O4 g7 X ) Y8 T2 `9 I" a2 H: M/**************************传递数据给extend**************************************/ 8 J0 e$ X2 y9 @* \ pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);/ P; |, t, F$ l6 {- a' f
1 b6 R& `4 L- |4 I/ ] valueStr = SysAllocString((WCHAR *) L"1232"); + u0 x9 c4 S$ m6 g3 [ VariantInit(&pokeVariant[0]); ; _) L3 O; D- M; B3 Q4 D& U pokeVariant[0].vt = VT_BSTR;) p. q: F# c% i
pokeVariant[0].bstrVal = valueStr;& Y8 l& g( m* N
. @+ k2 E& @5 z+ g% @ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); # P3 W" t8 S9 B& j+ V! T# x VariantInit(&pokeVariant[1]); , p/ Y% d, n* R; n
pokeVariant[1].vt = VT_BSTR; . h" v: Y- D( q0 o pokeVariant[1].bstrVal = itemStr; 8 A8 [3 _( Y, N6 k; U+ h0 Z9 e2 N6 a+ q
topicStr = SysAllocString((WCHAR *) L"system");& `0 ~% ?* b) M- U, {
VariantInit(&pokeVariant[2]); % E0 Y/ x L3 K* l& o# h pokeVariant[2].vt = VT_BSTR; : n# X6 P; g) k1 @ pokeVariant[2].bstrVal = topicStr; , Q5 ?- |0 a z1 k% }" D6 P ' X( b- f3 P5 [ r& e3 {1 n! f. ^// Set the DISPPARAMS structure that holds the variant. . z$ _7 i( q) I k% s! B# d, q) n/ ]: \
dp.rgvarg = pokeVariant;! K# L1 `# I0 Y
dp.cArgs = 3; + D( p* h& L9 R1 D dp.rgdispidNamedArgs = NULL;* Z: n) T5 A9 t
dp.cNamedArgs = 0;4 x7 Q s# S6 g/ z4 ?
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// Call IDispatch::Invoke()$ \" z5 O b8 @- l, r: f7 B$ |( _( m
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hr = m_pDisp->Invoke( ) `* v# V1 x' E+ x: Z8 p2 t pokeID,4 f) i3 L; i# Z2 G1 F
IID_NULL, & E9 X5 ]6 p; ~1 ?6 \ n& r LOCALE_SYSTEM_DEFAULT, 2 X8 w8 [+ u( L DISPATCH_METHOD," x# d7 U5 u$ J8 A
&dp,: {, \. E: r: s0 w+ W
NULL, % a* G' y: h7 Q &ei, ( |! U/ _* ?0 T4 w1 X9 a &uiErr);- I& L K8 t7 g. ^
) J, Z* j3 W t/ n SysFreeString(topicStr);. i( Z+ d4 I' g+ N7 q P6 z
SysFreeString(itemStr);; M3 @( p4 V# t% i2 h6 Q N$ B+ n% v
SysFreeString(valueStr);/ W! {. J! ~- A8 v( n
/ h1 G2 ~& m2 z1 @4 C 2 v: c8 l% r/ T2.这是request的程序- b' r- j6 [3 _8 k4 \; q- } c
// Request a value from Extend , M; a* e1 u) ]! E2 E' f/ B//" u8 b6 H1 S3 \* V9 f4 r
// Initialize the variant that will hold the BSTR. Set the variant's+ H7 I7 m2 V" [7 f" k% ~
// type flag to indicate the fact that this variant holds a BSTR. Place the; s, N$ A3 @' g4 ]
// BSTR into the variant structure. 8 q- P8 K, x% x6 w( J " O v3 Y8 k7 ^' {) o8 v. v requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);$ }9 V4 t/ d7 X: ^
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 2 E: }# n1 W$ q- t& Q4 w VariantInit(&requestVariant[0]); ( z% F3 x# v5 B. t) H$ |1 B
requestVariant[0].vt = VT_BSTR; ! z1 Z- Q* t, L/ `9 n requestVariant[0].bstrVal = itemStr;& e* r' l/ L l S3 T# T
. H' g: i8 ]. K4 A7 s* Z. a topicStr = SysAllocString((WCHAR *) L"system"); , m9 n [% J6 R+ `# t& o VariantInit(&requestVariant[1]); 4 C* h8 y: ?: s
requestVariant[1].vt = VT_BSTR;+ Z3 S H$ p. g8 a) }
requestVariant[1].bstrVal = topicStr; , C3 Z/ C" f1 r, E7 U* C, ]' ^* u! G* v7 D, I K' D; I
// Set the DISPPARAMS structure that holds the variant.$ O0 o8 f2 E" ^" j g