PREAD_PROCESS_MEMORY_ROUTINE64

Undocumented in source but is binding to Windows. You might be able to learn more by searching the web for its name.
version(Windows)
extern (Windows)
alias PREAD_PROCESS_MEMORY_ROUTINE64 = BOOL function(HANDLE hProcess, DWORD64 lpBaseAddress, PVOID lpBuffer, DWORD nSize, LPDWORD lpNumberOfBytesRead)

Meta