Type Definition windows_sys::Win32::Security::Cryptography::PFN_CRYPT_XML_DATA_PROVIDER_READ

pub type PFN_CRYPT_XML_DATA_PROVIDER_READ = Option<unsafe extern "system" fn(pvcallbackstate: *mut c_void, pbdata: *mut u8, cbdata: u32, pcbread: *mut u32) -> HRESULT>;

Required features: "Win32_Security_Cryptography"