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2.这是request的程序 ) b0 ^- D1 T& N- _% [! n6 Q$ g// Request a value from Extend2 \# s" i/ g+ b% ]: U, W
//1 h3 U7 D; A" c4 P! i
// Initialize the variant that will hold the BSTR. Set the variant's! e N5 i, W9 k7 i9 w3 ^5 d( \, G
// type flag to indicate the fact that this variant holds a BSTR. Place the; `. x C2 ?( d: W2 m
// BSTR into the variant structure. $ G3 `) h& [; p% b/ u# d1 C5 M7 D; _- f
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); ( R8 ]. a' i1 T: O3 K8 R . t2 p- p& Y( v5 Z4 [% u
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); , u$ c# ~; j' t$ b, T8 e) K VariantInit(&requestVariant[0]); . g7 T: _0 S9 P* N, ^# ~4 T4 W requestVariant[0].vt = VT_BSTR;9 n+ I: P2 F6 C& f
requestVariant[0].bstrVal = itemStr; 3 g2 U+ g4 k, g/ `* e% T K* X0 B + i3 |5 i7 o5 R topicStr = SysAllocString((WCHAR *) L"system"); 4 s m+ i' j. d# w, y, { VariantInit(&requestVariant[1]); $ r$ Z! K: }9 j' [1 z6 S requestVariant[1].vt = VT_BSTR;/ s% q/ o% Q6 V" o
requestVariant[1].bstrVal = topicStr;$ u9 ^. X. `8 d
* y5 h U3 `' n( ^. P// Set the DISPPARAMS structure that holds the variant. / k$ J6 S7 V& v0 {& S+ k% G5 D5 K 2 ~6 R9 m" N( G; j dp2.rgvarg = requestVariant;1 p+ _0 v4 D; w8 N7 L3 f
dp2.cArgs = 2;! w' J" ], a6 @* J
dp2.rgdispidNamedArgs = NULL;8 ]" x6 u/ Q$ _6 K! X. _
dp2.cNamedArgs = 0; & ~/ [0 o5 I! m3 t2 b* Z( ~# h; W. i+ x- R# z
var.vt = VT_EMPTY; / i' l/ T: D- N5 [1 B6 A9 o D" k! _% M: v9 }0 }. Y( n
// Call IDispatch::Invoke()* z* M- ~* z& c
3 k: f! R) w: S5 ?+ I1 u X7 I hr = m_pDisp->Invoke() q8 G5 x5 O% Z& j$ k: j$ Q, L8 s
requestID, q! |$ p4 F+ I; P( t IID_NULL, ( Y# s% S- ] s% ~: \2 l LOCALE_SYSTEM_DEFAULT, $ C1 K/ E/ ~6 r7 O4 d DISPATCH_METHOD,9 i3 f4 r) v- m) } Y+ r
&dp2,3 J* F* x" J B1 B
&var, ) G& j' g) r* g0 R( h &ei, 0 o/ Q# z+ h2 t: Q( T+ J2 {3 u &uiErr);* W; b _, M, p) ^9 h! Z