winapi::mssip::pCryptSIPGetSignedDataMsg

type pCryptSIPGetSignedDataMsg = Option<unsafe extern "system" fn(pSubjectInfo: *mut SIP_SUBJECTINFO, pdwEncodingType: *mut DWORD, dwIndex: DWORD, pcbSignedDataMsg: *mut DWORD, pbSignedDataMsg: *mut BYTE) -> BOOL>;