windows_targets::link!("licenseprotection.dll" "system" fn RegisterLicenseKeyWithExpiration(licensekey : windows_sys::core::PCWSTR, validityindays : u32, status : *mut LicenseProtectionStatus) -> windows_sys::core::HRESULT); windows_targets::link!("licenseprotection.dll" "system" fn ValidateLicenseKeyProtection(licensekey : windows_sys::core::PCWSTR, notvalidbefore : *mut super::super::Foundation:: FILETIME, notvalidafter : *mut super::super::Foundation:: FILETIME, status : *mut LicenseProtectionStatus) -> windows_sys::core::HRESULT); pub const LicenseKeyAlreadyExists: LicenseProtectionStatus = 4i32; pub const LicenseKeyCorrupted: LicenseProtectionStatus = 3i32; pub const LicenseKeyNotFound: LicenseProtectionStatus = 1i32; pub const LicenseKeyUnprotected: LicenseProtectionStatus = 2i32; pub const Success: LicenseProtectionStatus = 0i32; pub type LicenseProtectionStatus = i32;