CertVerifyCTLUsage

function CertVerifyCTLUsage(

  dwEncodingType: DWORD;

  dwSubjectType: DWORD;

  pvSubject: Pointer;

  pSubjectUsage: PCTL_USAGE;

  dwFlags: DWORD;

  pVerifyUsagePara: PCTL_VERIFY_USAGE_PARA;

  pVerifyUsageStatus: PCTL_VERIFY_USAGE_STATUS

):BOOL;