& {8 X* q5 E# t7 n% ^9 W5 k& Z & j+ }# O N2 c* F2.这是request的程序, R* G. G' Z7 p! N, ?. i
// Request a value from Extend1 Q3 s+ g. P1 v
// 0 q* M1 F ~# Q0 `" C! _// Initialize the variant that will hold the BSTR. Set the variant's' E% g" {, T5 r' k
// type flag to indicate the fact that this variant holds a BSTR. Place the 4 Q a( S! b/ {' P, o// BSTR into the variant structure. 5 g( Z) w* D7 {8 G- _9 H1 `" N" |' e
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);" h3 p+ l! m3 z- z |% x
3 p6 P$ S: v4 K6 k4 [% G itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); , _% g8 y8 l# j h1 ]4 r VariantInit(&requestVariant[0]); % k" A* b. Y' C+ S requestVariant[0].vt = VT_BSTR; ^" n. p$ u1 K7 t) {) _7 C requestVariant[0].bstrVal = itemStr;% }$ x P0 b. {" R$ X0 N
% _( ~8 H2 y* O
topicStr = SysAllocString((WCHAR *) L"system");3 S/ y4 J1 s# U% Y. }
VariantInit(&requestVariant[1]); # }( i+ C" p4 }; `9 J
requestVariant[1].vt = VT_BSTR;) [$ k+ o K" I" l$ g! R
requestVariant[1].bstrVal = topicStr; + ~ z: v0 A; [6 |- {, `+ h3 t7 Z' }0 I4 F4 A
// Set the DISPPARAMS structure that holds the variant. ; |) S. ~# a, N) Z6 d4 F% A4 D) b. o! F3 _
dp2.rgvarg = requestVariant;1 N8 @/ _& W; @" D! z/ u4 o, U
dp2.cArgs = 2;1 N; S1 S4 I5 r( O& g
dp2.rgdispidNamedArgs = NULL; ( A1 ~7 x4 S5 d) D9 _& m3 ^2 }$ z dp2.cNamedArgs = 0; % T* c p- x B6 F1 D0 M $ e+ [8 C. _& ^5 b f/ B) J& _ G var.vt = VT_EMPTY;: e# m# T4 `9 d