为此，Win32方法是GetUserName.我们可以用ffi直接调用它，而不是费力地用方法通道来设置插件.您需要ffi和win32个Package.
import 'dart:ffi';
import 'package:ffi/ffi.dart';
import 'package:win32/win32.dart';
// This is the max win32 username length. It is missing from the win32 package,
// so we'll just create our own constant.
const unLen = 256;
String getUsername() {
return using<String>((arena) {
final buffer = arena.allocate<Utf16>(sizeOf<Uint16>() * (unLen + 1));
final bufferSize = arena.allocate<Uint32>(sizeOf<Uint32>());
bufferSize.value = unLen + 1;
final result = GetUserName(buffer, bufferSize);
if (result == 0) {
GetLastError();
throw Exception(
'Failed to get win32 username: error 0x${result.toRadixString(16)}');
}
return buffer.toDartString();
});
}