merge new features

2026-05-27 19:19:11 +08:00
parent 886046a72b
commit 98af110531
37 changed files with 6405 additions and 993 deletions
@@ -0,0 +1,26 @@
+import 'dart:ffi';
+import 'dart:io';
+
+import 'package:ffi/ffi.dart';
+
+/// 通过 Win32 SetEnvironmentVariableW 设置/清除进程环境变量
+/// 仅 Windows 有效，其他平台直接返回 false
+bool winSetEnvVar(String name, String? value) {
+  if (!Platform.isWindows) return false;
+
+  final dylib = DynamicLibrary.open('kernel32.dll');
+  final fn = dylib.lookupFunction<
+      Int32 Function(Pointer<Utf16>, Pointer<Utf16>),
+      int Function(Pointer<Utf16>, Pointer<Utf16>)>(
+    'SetEnvironmentVariableW',
+  );
+
+  final namePtr = name.toNativeUtf16();
+  final valuePtr = value != null ? value.toNativeUtf16() : nullptr;
+  try {
+    return fn(namePtr, valuePtr) != 0;
+  } finally {
+    calloc.free(namePtr);
+    if (value != null) calloc.free(valuePtr);
+  }
+}