9 X: \4 p/ x9 t- \; O2.这是request的程序1 O9 E& z6 T1 p. w
// Request a value from Extend2 v( v$ M! [& l1 O$ Z4 q' R8 p
// + i% S% c8 f! n2 s! D( O// Initialize the variant that will hold the BSTR. Set the variant's5 }: {: K' O+ p7 X% q k7 D) L) ?- k
// type flag to indicate the fact that this variant holds a BSTR. Place the" |6 _* ?& J0 f% N" D7 {' {
// BSTR into the variant structure.+ Z* `7 a- u: x; h/ ]3 F+ P
5 h9 {) L6 a" a; Y+ I, i requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);$ y A: R& c! P
' {: y, d1 ^1 K# v! o8 } itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 9 i/ s, ^0 I) A. @4 \8 |* M VariantInit(&requestVariant[0]); . F! G5 o8 [6 T, a/ F requestVariant[0].vt = VT_BSTR; 5 T2 L4 D$ K0 L: e+ m& v. M& a7 n requestVariant[0].bstrVal = itemStr;# a, I, S2 R" j. r' [& l- T
3 S' z- U! ?$ @, f! M topicStr = SysAllocString((WCHAR *) L"system");' v) m' `# h) A" a
VariantInit(&requestVariant[1]); : d7 i! G) Y9 a8 U3 O7 d
requestVariant[1].vt = VT_BSTR;$ q5 [( D3 q& Z
requestVariant[1].bstrVal = topicStr;: Q( D) Y N; D( r* K) V" a
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// Set the DISPPARAMS structure that holds the variant.+ V" y( m- `6 E, B0 D# O8 H
! w5 \2 j9 p: o6 s2 i$ r" a dp2.rgvarg = requestVariant;4 y- [9 X# k9 C7 q' ]; i7 K' `$ Y
dp2.cArgs = 2; 5 {9 H: Y4 u" z% { dp2.rgdispidNamedArgs = NULL;8 R. \2 M u" N
dp2.cNamedArgs = 0;4 Q' b7 _, E. M4 r
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var.vt = VT_EMPTY;# ]3 }' n& Y8 u