. P( I& h* x! O* P- }2.这是request的程序: G6 U9 X+ l7 Q- z4 ]
// Request a value from Extend % l$ U9 O- _* m3 q// " `* a) E6 Z! I( S// Initialize the variant that will hold the BSTR. Set the variant's7 I: ]1 R& l0 x/ \1 r
// type flag to indicate the fact that this variant holds a BSTR. Place the: ~2 R, n9 {$ D8 {
// BSTR into the variant structure.- m3 E8 a0 I; j$ w
% P" G, \) K& H" w' ~5 | h2 X requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 8 _) k l4 U0 q ; k9 f0 Z4 [# R! ~ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 9 f+ v. C7 b+ b VariantInit(&requestVariant[0]); + R' R c( d; {- q9 o requestVariant[0].vt = VT_BSTR; 8 b: s J$ u( e requestVariant[0].bstrVal = itemStr; 8 Y( t5 R2 b. e- j 9 B, ]3 N* C3 Q- `: M9 J topicStr = SysAllocString((WCHAR *) L"system"); ; C: q9 r& Q7 n$ E" _$ b! B% v VariantInit(&requestVariant[1]); 3 l9 v1 d! O) g/ U$ X* C
requestVariant[1].vt = VT_BSTR;) }, ]+ Q7 @/ c5 @8 f1 l- m
requestVariant[1].bstrVal = topicStr;9 n2 l1 g( `* a8 C0 ~- F0 W
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// Set the DISPPARAMS structure that holds the variant. 5 W( o9 T- c' e+ P& U. s1 C! H* S2 c% w/ w6 O
dp2.rgvarg = requestVariant; ( W8 h* w0 g8 w+ {7 M( W2 X; e, v. {, j dp2.cArgs = 2;5 ]! V! e, J, ^8 _1 l. a' @
dp2.rgdispidNamedArgs = NULL; ( ]6 E7 w2 M" Q# N" p! R dp2.cNamedArgs = 0; ; \( \; ~' ?: d- h0 V/ ~$ x; {7 o( d) s. ?
var.vt = VT_EMPTY; , b7 w; v3 a, g8 g % P2 g5 Z9 v* L; ?/ ^( D// Call IDispatch::Invoke() % c2 ~1 s: o* d, V; N- O9 d4 n% v, v0 w5 i
hr = m_pDisp->Invoke(, {" m, O7 @! j7 @) g! }3 l
requestID, 9 ~& S k" T8 w! d IID_NULL, 7 K$ x7 R4 k* i; \- K$ O! t" | LOCALE_SYSTEM_DEFAULT, 5 Y- `# c7 H# ^& d3 _1 H& h DISPATCH_METHOD,4 K) W3 q' y+ Y
&dp2,6 R7 ~2 G" J3 M0 s: \. k" w- l; _! y
&var, , K) n: F# p7 {$ R; W( `5 V &ei, ! s% i: z" [; q _& ? &uiErr);/ Y5 z: ^" z% Z( g: m4 e( ?