{"id":6710,"date":"2023-02-22T11:53:51","date_gmt":"2023-02-22T02:53:51","guid":{"rendered":"https:\/\/www.lancard.com\/blog\/?p=6710"},"modified":"2025-03-12T11:23:58","modified_gmt":"2025-03-12T02:23:58","slug":"flutter_windows_toggle_ime","status":"publish","type":"post","link":"https:\/\/www.lancard.com\/blog\/2023\/02\/22\/flutter_windows_toggle_ime\/","title":{"rendered":"Flutter\u306eWindows\u30a2\u30d7\u30ea\u3067IME\u306e\u5207\u308a\u66ff\u3048"},"content":{"rendered":"

Flutter\u306eWindows\u30a2\u30d7\u30ea\u3067\u3001TextField\u30d5\u30a9\u30fc\u30ab\u30b9\u6642\u306bIME\u3092\u30aa\u30f3\/\u30aa\u30d5\u5207\u308a\u66ff\u3048\u308b\u6a5f\u80fd\u3092\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3057\u305f\u3002
\n\u6700\u521d\u3001TextField\u306eTextInputType\u3092\u4f7f\u3063\u3066\u30ad\u30fc\u30dc\u30fc\u30c9\u3092phone<\/code>\u3084emailAddress<\/code>\u306b\u6307\u5b9a\u3059\u308c\u3070IME\u304c\u5207\u308a\u66ff\u308f\u308b\u306e\u3067\u306f\u3001\u3068\u601d\u3044\u8a66\u3057\u307e\u3057\u305f\u304c\u3001\u5207\u308a\u66ff\u308f\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002
\n\u30d7\u30e9\u30b0\u30a4\u30f3\u3067IME\u3092\u5207\u308a\u66ff\u3048\u3089\u308c\u308b\u3082\u306e\u3092\u63a2\u3057\u307e\u3057\u305f\u304c\u898b\u3064\u304b\u3089\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u4ee5\u4e0b\u3092\u53c2\u8003\u306bwin32 API\u3092\u547c\u3073\u51fa\u3059\u65b9\u6cd5\u3067\u5b9f\u88c5\u3057\u307e\u3057\u305f\u3002
\nhttps:\/\/docs.flutter.dev\/development\/platform-integration\/platform-channels#step-5-add-a-windows-platform-specific-implementation<\/a>
\n
\n\u4e0a\u8a18\u306b\u66f8\u304b\u308c\u3066\u308b\u3088\u3046\u306b\u3001\u307e\u305awindows\/runner\/flutter_window.cpp<\/code>\u306e#include \"flutter_window.h\"<\/code>\u306e\u5f8c\u306b\u4ee5\u4e0b\u3092\u8ffd\u8a18\u3057\u307e\u3059\u3002<\/p>\n

#include <flutter\/event_channel.h>\n#include <flutter\/event_sink.h>\n#include <flutter\/event_stream_handler_functions.h>\n#include <flutter\/method_channel.h>\n#include <flutter\/standard_method_codec.h>\n#include <windows.h>\n\n#include <memory>\n<\/code><\/pre>\n
dll\u3092\u547c\u3073\u51fa\u3059\u305f\u3081\u4ee5\u4e0b\u3092flutter_window.cpp\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n
#pragma comment(lib, \"imm32.lib\")\n#pragma comment(lib, \"user32.lib\")\n<\/code><\/pre>\n
FlutterWindow::OnCreate<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u7de8\u96c6\u3057\u3001\u30c1\u30e3\u30f3\u30cd\u30eb\u540d hoge.flutter.dev\/ime<\/code>\u306b\u7d50\u3073\u3064\u3044\u305f flutter::MethodChannel<\/code>\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
bool FlutterWindow::OnCreate() {\n  \/\/ ...\n\n  flutter::MethodChannel<> channel(\n      flutter_controller_->engine()->messenger(), \"hoge.flutter.dev\/ime\",\n      &flutter::StandardMethodCodec::GetInstance());\n  channel.SetMethodCallHandler(\n      [](const flutter::MethodCall<>& call,\n         std::unique_ptr<flutter::MethodResult<>> result) {\n\n            HWND hwnd = GetForegroundWindow();\n            HIMC himc = ImmGetContext(hwnd);\n            if (call.method_name() == \"imeOn\") {\n                ImmSetOpenStatus(himc, true);\n            } else {\n                ImmSetOpenStatus(himc, false);\n            }\n            ImmReleaseContext(hwnd, himc);\n            result->Success();\n\n      });\n  return true;\n}\n\n<\/code><\/pre>\n
\u6b21\u306bFlutter\u5074\u3067\u30c1\u30e3\u30cd\u30eb\u3092\u4ecb\u3057\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002
\n\u4ee5\u4e0b\u306eWidget\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
import 'package:flutter\/material.dart';\nimport 'package:flutter\/services.dart';\n\nclass ToggleIme extends StatelessWidget {\n  final Widget child;\n  final bool enable;\n  const ToggleIme({super.key, required  this.child, required this.enable });\n  static const platform = MethodChannel('hoge.flutter.dev\/ime');\n\n  @override\n  Widget build(BuildContext context) {\n    return Focus(\n      skipTraversal: true,\n      child: child,\n      onFocusChange: (hasFocus) {\n        if (hasFocus) {\n          if (enable) {\n            platform.invokeMethod('imeOn');\n          } else {\n            platform.invokeMethod('imeOff');\n          }\n        }\n      } ,\n    );\n  }\n}\n<\/code><\/pre>\n
TextField\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u3067\u30e9\u30c3\u30d7\u3057\u307e\u3059\u3002<\/p>\n
ToggleIme(\n    enable: false,\n    child: TextField(),\n)\n<\/code><\/pre>\n
\u3053\u308c\u3067TextField\u30d5\u30a9\u30fc\u30ab\u30b9\u6642\u306bIME\u304c\u30aa\u30d5\u306b\u306a\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\"Facebook\"<\/a>\"twitter\"<\/a>\"linkedin\"<\/a>\"tumblr\"<\/a>\"mail\"<\/a>","protected":false},"excerpt":{"rendered":"
Flutter\u306eWindows\u30a2\u30d7\u30ea\u3067\u3001TextField\u30d5\u30a9\u30fc\u30ab\u30b9\u6642\u306bIME\u3092\u30aa\u30f3\/\u30aa\u30d5\u5207\u308a\u66ff\u3048\u308b\u6a5f\u80fd\u3092\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3057\u305f\u3002 \u6700\u521d\u3001TextField\u306eTextInputType\u3092\u4f7f\u3063\u3066\u30ad\u30fc\u30dc\u30fc\u30c9\u3092phone\u3084email […]<\/p>\n","protected":false},"author":25,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[215],"class_list":["post-6710","post","type-post","status-publish","format-standard","hentry","category-1","tag-flutter"],"_links":{"self":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/6710","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/comments?post=6710"}],"version-history":[{"count":7,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/6710\/revisions"}],"predecessor-version":[{"id":6717,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/posts\/6710\/revisions\/6717"}],"wp:attachment":[{"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/media?parent=6710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/categories?post=6710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lancard.com\/blog\/wp-json\/wp\/v2\/tags?post=6710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}