// when pid is not attached to console, GetLastError(pid) returns:
                // ERROR_GEN_FAILURE on Win7
                // ERROR_INVALID_HANDLE on Win10
                if (!AttachConsole(pid)) {
                    if (GetLastError() == ERROR_GEN_FAILURE || GetLastError() == ERROR_INVALID_HANDLE) {
                        printf("none\\n");
                        exit(0);

		if m32 == 0 {
			print("runtime: LoadLibraryExW failed; errno=", getlasterror(), "\n")
			throw("winmm.dll not found")
		}
		_timeBeginPeriod = windowsFindfunc(m32, []byte("timeBeginPeriod\000"))
		_timeEndPeriod = windowsFindfunc(m32, []byte("timeEndPeriod\000"))
		if _timeBeginPeriod == nil || _timeEndPeriod == nil {
			print("runtime: GetProcAddress failed; errno=", getlasterror(), "\n")
			throw("timeBegin/EndPeriod not found")
		}
	}

}

//go:uintptrescapes

// Call executes procedure p with arguments a. It will panic, if more than 15 arguments
// are supplied.
//
// The returned error is always non-nil, constructed from the result of GetLastError.
// Callers must inspect the primary return value to decide whether an error occurred
// (according to the semantics of the specific function being called) before consulting

  # you must check both the return value of the function and the error code returned by GetLastError to
  # determine whether or not an error has occurred. If an error has occurred, the return value of SetFilePointer
  # is INVALID_SET_FILE_POINTER and GetLastError returns a value other than NO_ERROR.
  $ret = $Kernel32::SetFilePointer($handle, 0, [System.IntPtr]::Zero, $FILE_BEGIN)