" Q/ b& s# \$ q9 ?6 ^5 l , {+ j3 T2 i9 C7 f$ C2.这是request的程序' h: S, ~: m' }# M/ s* s3 _
// Request a value from Extend ' k; x4 ~) x3 V! Y// $ v& F6 K, V5 R3 V- P1 }' r// Initialize the variant that will hold the BSTR. Set the variant's : f, ]' p) _/ x$ Z// type flag to indicate the fact that this variant holds a BSTR. Place the; a3 |- _/ G c2 S' S" d
// BSTR into the variant structure., T' g ^8 ^$ E0 ?& m
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);5 G% i7 y0 K. b0 F8 b* r
7 I' r* ]8 J. n- q4 K itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");; [' X, D+ n; g& d+ ?, J
VariantInit(&requestVariant[0]); 8 L C2 u3 u+ W9 V
requestVariant[0].vt = VT_BSTR;) o9 C# ]- \" s2 H- W: S7 w
requestVariant[0].bstrVal = itemStr;# s) a# L4 B8 H# Q' @9 b% X+ l+ Y
2 _3 E: ]( \! g) d5 a8 ~+ L) W topicStr = SysAllocString((WCHAR *) L"system"); ( t% m( S: ~) |7 w VariantInit(&requestVariant[1]); ; Q- ^8 v& v: @: H3 Z# a6 K2 e
requestVariant[1].vt = VT_BSTR; ( v. l, E! w, | requestVariant[1].bstrVal = topicStr;! g- ~% v( G2 w y9 e$ k( k
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// Set the DISPPARAMS structure that holds the variant.0 u$ E1 Q4 Y" o
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dp2.rgvarg = requestVariant; $ W7 v- P; w8 y- ^' w% } dp2.cArgs = 2;# O( g$ g6 _8 V; y. W$ _( R2 ~
dp2.rgdispidNamedArgs = NULL;% Z( } `$ E) Y7 M8 F; n
dp2.cNamedArgs = 0; " k* N& K# Y. _& e, `+ w/ ]) e . y _3 [5 G7 I7 D" Z6 ]: p& G. \4 j var.vt = VT_EMPTY; ( I. H! q, }& H! S1 \: K' G; w |, A9 h# H; [
// Call IDispatch::Invoke() " s8 h; _3 y. _; S! L2 H 9 i$ B* A1 \2 B" q' x hr = m_pDisp->Invoke() k# t" N3 ?+ G4 ]( a U
requestID,2 Z; d5 G3 |; v* R1 V% e
IID_NULL, * r: \$ ?- L1 m P2 h# m& {. y5 C LOCALE_SYSTEM_DEFAULT,, q" b" c/ R/ W( U8 @
DISPATCH_METHOD,7 {& X5 Y6 {$ Z7 R( F
&dp2,1 g N ?0 |3 c' {
&var,: e3 j! \2 C8 f" c9 T; z. B( p+ P
&ei, . v! v7 M+ s; g &uiErr);; d, `9 C$ z p: R. j