) h; h6 a8 Z. C* V0 o! E+ ^4 c+ N2.这是request的程序 - k' J* |0 J0 e/ |/ j! Y// Request a value from Extend9 i ] O6 N4 G+ r- b
// $ m- p( }2 e7 ?* ^( _// Initialize the variant that will hold the BSTR. Set the variant's 7 [ [ Q* z" R$ G% O' G// type flag to indicate the fact that this variant holds a BSTR. Place the5 C3 G: F+ I+ U8 [ `! T# {( B+ v
// BSTR into the variant structure.- {0 F( T% ~) g: D' v
0 m/ u6 c% Q4 `5 [3 j requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ) |' |, D4 H; o* i 8 `2 {9 b. S. i
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");, i/ X* y: U# D& r7 s8 W
VariantInit(&requestVariant[0]); " _6 k) r: L# w& H requestVariant[0].vt = VT_BSTR;: u8 {0 O3 S+ b2 {( ~
requestVariant[0].bstrVal = itemStr; 9 R, [- F: ?) V7 y5 x # {3 B+ U z- o. q topicStr = SysAllocString((WCHAR *) L"system");7 d/ b: Q# v% E( ]4 i
VariantInit(&requestVariant[1]); 9 \. [8 _- u3 W8 r5 D1 J; |6 L
requestVariant[1].vt = VT_BSTR; c" {' b( W& E) e
requestVariant[1].bstrVal = topicStr; ( N- }! H0 y" J$ }" V- H2 { ( C1 M$ o" y) n+ A0 ?( [: G// Set the DISPPARAMS structure that holds the variant. " F2 y1 a, w7 S- ]1 s7 J i- Z) _, _# S9 V8 ?& C' T
dp2.rgvarg = requestVariant; 7 n8 A% B% q6 x' Z! B dp2.cArgs = 2; % x4 J2 y% k) v& A8 X dp2.rgdispidNamedArgs = NULL;$ v9 d+ r+ k7 Z. u9 g( V
dp2.cNamedArgs = 0; ; n. z9 N% d! w8 {# P# s$ T, ]/ |* ^4 v' @
var.vt = VT_EMPTY;0 [7 L- G T O6 W3 t G