remove macos and windows deps

macos/Runner/Configs/Debug.xcconfig

-#include "../../Flutter/Flutter-Debug.xcconfig"
-#include "Warnings.xcconfig"

macos/Runner/Configs/Release.xcconfig

-#include "../../Flutter/Flutter-Release.xcconfig"
-#include "Warnings.xcconfig"

macos/Runner/Configs/Warnings.xcconfig

-WARNING_CFLAGS = -Wall -Wconditional-uninitialized -Wnullable-to-nonnull-conversion -Wmissing-method-return-type -Woverlength-strings
-GCC_WARN_UNDECLARED_SELECTOR = YES
-CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
-CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE
-CLANG_WARN__DUPLICATE_METHOD_MATCH = YES
-CLANG_WARN_PRAGMA_PACK = YES
-CLANG_WARN_STRICT_PROTOTYPES = YES
-CLANG_WARN_COMMA = YES
-GCC_WARN_STRICT_SELECTOR_MATCH = YES
-CLANG_WARN_OBJC_REPEATED_USE_OF_WEAK = YES
-CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES
-GCC_WARN_SHADOW = YES
-CLANG_WARN_UNREACHABLE_CODE = YES

macos/Runner/DebugProfile.entitlements

-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>com.apple.security.app-sandbox</key>
-	<true/>
-	<key>com.apple.security.cs.allow-jit</key>
-	<true/>
-	<key>com.apple.security.network.server</key>
-	<true/>
-</dict>
-</plist>

macos/Runner/Info.plist

-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>$(DEVELOPMENT_LANGUAGE)</string>
-	<key>CFBundleExecutable</key>
-	<string>$(EXECUTABLE_NAME)</string>
-	<key>CFBundleIconFile</key>
-	<string></string>
-	<key>CFBundleIdentifier</key>
-	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>$(PRODUCT_NAME)</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleShortVersionString</key>
-	<string>$(FLUTTER_BUILD_NAME)</string>
-	<key>CFBundleVersion</key>
-	<string>$(FLUTTER_BUILD_NUMBER)</string>
-	<key>LSMinimumSystemVersion</key>
-	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
-	<key>NSHumanReadableCopyright</key>
-	<string>$(PRODUCT_COPYRIGHT)</string>
-	<key>NSMainNibFile</key>
-	<string>MainMenu</string>
-	<key>NSPrincipalClass</key>
-	<string>NSApplication</string>
-</dict>
-</plist>

macos/Runner/MainFlutterWindow.swift

-import Cocoa
-import FlutterMacOS
-
-class MainFlutterWindow: NSWindow {
-  override func awakeFromNib() {
-    let flutterViewController = FlutterViewController.init()
-    let windowFrame = self.frame
-    self.contentViewController = flutterViewController
-    self.setFrame(windowFrame, display: true)
-
-    RegisterGeneratedPlugins(registry: flutterViewController)
-
-    super.awakeFromNib()
-  }
-}

macos/Runner/Release.entitlements

-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>com.apple.security.app-sandbox</key>
-	<true/>
-</dict>
-</plist>

windows/.gitignore

-flutter/ephemeral/
-
-# Visual Studio user-specific files.
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# Visual Studio build-related files.
-x64/
-x86/
-
-# Visual Studio cache files
-# files ending in .cache can be ignored
-*.[Cc]ache
-# but keep track of directories ending in .cache
-!*.[Cc]ache/

windows/CMakeLists.txt

-cmake_minimum_required(VERSION 3.15)
-project(gecko LANGUAGES CXX)
-
-set(BINARY_NAME "gecko")
-
-cmake_policy(SET CMP0063 NEW)
-
-set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
-
-# Configure build options.
-get_property(IS_MULTICONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
-if(IS_MULTICONFIG)
-  set(CMAKE_CONFIGURATION_TYPES "Debug;Profile;Release"
-    CACHE STRING "" FORCE)
-else()
-  if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
-    set(CMAKE_BUILD_TYPE "Debug" CACHE
-      STRING "Flutter build mode" FORCE)
-    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
-      "Debug" "Profile" "Release")
-  endif()
-endif()
-
-set(CMAKE_EXE_LINKER_FLAGS_PROFILE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
-set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
-set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE}")
-set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}")
-
-# Use Unicode for all projects.
-add_definitions(-DUNICODE -D_UNICODE)
-
-# Compilation settings that should be applied to most targets.
-function(APPLY_STANDARD_SETTINGS TARGET)
-  target_compile_features(${TARGET} PUBLIC cxx_std_17)
-  target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100")
-  target_compile_options(${TARGET} PRIVATE /EHsc)
-  target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0")
-  target_compile_definitions(${TARGET} PRIVATE "$<$<CONFIG:Debug>:_DEBUG>")
-endfunction()
-
-set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
-
-# Flutter library and tool build rules.
-add_subdirectory(${FLUTTER_MANAGED_DIR})
-
-# Application build
-add_subdirectory("runner")
-
-# Generated plugin build rules, which manage building the plugins and adding
-# them to the application.
-include(flutter/generated_plugins.cmake)
-
-
-# === Installation ===
-# Support files are copied into place next to the executable, so that it can
-# run in place. This is done instead of making a separate bundle (as on Linux)
-# so that building and running from within Visual Studio will work.
-set(BUILD_BUNDLE_DIR "$<TARGET_FILE_DIR:${BINARY_NAME}>")
-# Make the "install" step default, as it's required to run.
-set(CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD 1)
-if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
-endif()
-
-set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
-set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}")
-
-install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
-  COMPONENT Runtime)
-
-install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
-  COMPONENT Runtime)
-
-install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
-  COMPONENT Runtime)
-
-if(PLUGIN_BUNDLED_LIBRARIES)
-  install(FILES "${PLUGIN_BUNDLED_LIBRARIES}"
-    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
-    COMPONENT Runtime)
-endif()
-
-# Fully re-copy the assets directory on each build to avoid having stale files
-# from a previous install.
-set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
-install(CODE "
-  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
-  " COMPONENT Runtime)
-install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
-  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
-
-# Install the AOT library on non-Debug builds only.
-install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
-  CONFIGURATIONS Profile;Release
-  COMPONENT Runtime)

windows/flutter/CMakeLists.txt

-cmake_minimum_required(VERSION 3.15)
-
-set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
-
-# Configuration provided via flutter tool.
-include(${EPHEMERAL_DIR}/generated_config.cmake)
-
-# TODO: Move the rest of this into files in ephemeral. See
-# https://github.com/flutter/flutter/issues/57146.
-set(WRAPPER_ROOT "${EPHEMERAL_DIR}/cpp_client_wrapper")
-
-# === Flutter Library ===
-set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/flutter_windows.dll")
-
-# Published to parent scope for install step.
-set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
-set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
-set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
-set(AOT_LIBRARY "${PROJECT_DIR}/build/windows/app.so" PARENT_SCOPE)
-
-list(APPEND FLUTTER_LIBRARY_HEADERS
-  "flutter_export.h"
-  "flutter_windows.h"
-  "flutter_messenger.h"
-  "flutter_plugin_registrar.h"
-  "flutter_texture_registrar.h"
-)
-list(TRANSFORM FLUTTER_LIBRARY_HEADERS PREPEND "${EPHEMERAL_DIR}/")
-add_library(flutter INTERFACE)
-target_include_directories(flutter INTERFACE
-  "${EPHEMERAL_DIR}"
-)
-target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}.lib")
-add_dependencies(flutter flutter_assemble)
-
-# === Wrapper ===
-list(APPEND CPP_WRAPPER_SOURCES_CORE
-  "core_implementations.cc"
-  "standard_codec.cc"
-)
-list(TRANSFORM CPP_WRAPPER_SOURCES_CORE PREPEND "${WRAPPER_ROOT}/")
-list(APPEND CPP_WRAPPER_SOURCES_PLUGIN
-  "plugin_registrar.cc"
-)
-list(TRANSFORM CPP_WRAPPER_SOURCES_PLUGIN PREPEND "${WRAPPER_ROOT}/")
-list(APPEND CPP_WRAPPER_SOURCES_APP
-  "flutter_engine.cc"
-  "flutter_view_controller.cc"
-)
-list(TRANSFORM CPP_WRAPPER_SOURCES_APP PREPEND "${WRAPPER_ROOT}/")
-
-# Wrapper sources needed for a plugin.
-add_library(flutter_wrapper_plugin STATIC
-  ${CPP_WRAPPER_SOURCES_CORE}
-  ${CPP_WRAPPER_SOURCES_PLUGIN}
-)
-apply_standard_settings(flutter_wrapper_plugin)
-set_target_properties(flutter_wrapper_plugin PROPERTIES
-  POSITION_INDEPENDENT_CODE ON)
-set_target_properties(flutter_wrapper_plugin PROPERTIES
-  CXX_VISIBILITY_PRESET hidden)
-target_link_libraries(flutter_wrapper_plugin PUBLIC flutter)
-target_include_directories(flutter_wrapper_plugin PUBLIC
-  "${WRAPPER_ROOT}/include"
-)
-add_dependencies(flutter_wrapper_plugin flutter_assemble)
-
-# Wrapper sources needed for the runner.
-add_library(flutter_wrapper_app STATIC
-  ${CPP_WRAPPER_SOURCES_CORE}
-  ${CPP_WRAPPER_SOURCES_APP}
-)
-apply_standard_settings(flutter_wrapper_app)
-target_link_libraries(flutter_wrapper_app PUBLIC flutter)
-target_include_directories(flutter_wrapper_app PUBLIC
-  "${WRAPPER_ROOT}/include"
-)
-add_dependencies(flutter_wrapper_app flutter_assemble)
-
-# === Flutter tool backend ===
-# _phony_ is a non-existent file to force this command to run every time,
-# since currently there's no way to get a full input/output list from the
-# flutter tool.
-set(PHONY_OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/_phony_")
-set_source_files_properties("${PHONY_OUTPUT}" PROPERTIES SYMBOLIC TRUE)
-add_custom_command(
-  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
-    ${CPP_WRAPPER_SOURCES_CORE} ${CPP_WRAPPER_SOURCES_PLUGIN}
-    ${CPP_WRAPPER_SOURCES_APP}
-    ${PHONY_OUTPUT}
-  COMMAND ${CMAKE_COMMAND} -E env
-    ${FLUTTER_TOOL_ENVIRONMENT}
-    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.bat"
-      windows-x64 $<CONFIG>
-  VERBATIM
-)
-add_custom_target(flutter_assemble DEPENDS
-  "${FLUTTER_LIBRARY}"
-  ${FLUTTER_LIBRARY_HEADERS}
-  ${CPP_WRAPPER_SOURCES_CORE}
-  ${CPP_WRAPPER_SOURCES_PLUGIN}
-  ${CPP_WRAPPER_SOURCES_APP}
-)

windows/flutter/generated_plugin_registrant.cc

-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#include "generated_plugin_registrant.h"
-
-#include <connectivity_plus_windows/connectivity_plus_windows_plugin.h>
-#include <desktop_window/desktop_window_plugin.h>
-#include <printing/printing_plugin.h>
-#include <sentry_flutter/sentry_flutter_plugin.h>
-#include <window_size/window_size_plugin.h>
-
-void RegisterPlugins(flutter::PluginRegistry* registry) {
-  ConnectivityPlusWindowsPluginRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("ConnectivityPlusWindowsPlugin"));
-  DesktopWindowPluginRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("DesktopWindowPlugin"));
-  PrintingPluginRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("PrintingPlugin"));
-  SentryFlutterPluginRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("SentryFlutterPlugin"));
-  WindowSizePluginRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("WindowSizePlugin"));
-}

windows/flutter/generated_plugin_registrant.h

-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#ifndef GENERATED_PLUGIN_REGISTRANT_
-#define GENERATED_PLUGIN_REGISTRANT_
-
-#include <flutter/plugin_registry.h>
-
-// Registers Flutter plugins.
-void RegisterPlugins(flutter::PluginRegistry* registry);
-
-#endif  // GENERATED_PLUGIN_REGISTRANT_

windows/flutter/generated_plugins.cmake

-#
-# Generated file, do not edit.
-#
-
-list(APPEND FLUTTER_PLUGIN_LIST
-  connectivity_plus_windows
-  desktop_window
-  printing
-  sentry_flutter
-  window_size
-)
-
-list(APPEND FLUTTER_FFI_PLUGIN_LIST
-)
-
-set(PLUGIN_BUNDLED_LIBRARIES)
-
-foreach(plugin ${FLUTTER_PLUGIN_LIST})
-  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/windows plugins/${plugin})
-  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
-endforeach(plugin)
-
-foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
-  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/windows plugins/${ffi_plugin})
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
-endforeach(ffi_plugin)

windows/runner/CMakeLists.txt

-cmake_minimum_required(VERSION 3.15)
-project(runner LANGUAGES CXX)
-
-add_executable(${BINARY_NAME} WIN32
-  "flutter_window.cpp"
-  "main.cpp"
-  "utils.cpp"
-  "win32_window.cpp"
-  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
-  "Runner.rc"
-  "runner.exe.manifest"
-)
-apply_standard_settings(${BINARY_NAME})
-target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX")
-target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app)
-target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
-add_dependencies(${BINARY_NAME} flutter_assemble)

windows/runner/Runner.rc

-// Microsoft Visual C++ generated resource script.
-//
-#pragma code_page(65001)
-#include "resource.h"
-
-#define APSTUDIO_READONLY_SYMBOLS
-/////////////////////////////////////////////////////////////////////////////
-//
-// Generated from the TEXTINCLUDE 2 resource.
-//
-#include "winres.h"
-
-/////////////////////////////////////////////////////////////////////////////
-#undef APSTUDIO_READONLY_SYMBOLS
-
-/////////////////////////////////////////////////////////////////////////////
-// English (United States) resources
-
-#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
-LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
-
-#ifdef APSTUDIO_INVOKED
-/////////////////////////////////////////////////////////////////////////////
-//
-// TEXTINCLUDE
-//
-
-1 TEXTINCLUDE
-BEGIN
-    "resource.h\0"
-END
-
-2 TEXTINCLUDE
-BEGIN
-    "#include ""winres.h""\r\n"
-    "\0"
-END
-
-3 TEXTINCLUDE
-BEGIN
-    "\r\n"
-    "\0"
-END
-
-#endif    // APSTUDIO_INVOKED
-
-
-/////////////////////////////////////////////////////////////////////////////
-//
-// Icon
-//
-
-// Icon with lowest ID value placed first to ensure application icon
-// remains consistent on all systems.
-IDI_APP_ICON            ICON                    "resources\\app_icon.ico"
-
-
-/////////////////////////////////////////////////////////////////////////////
-//
-// Version
-//
-
-#ifdef FLUTTER_BUILD_NUMBER
-#define VERSION_AS_NUMBER FLUTTER_BUILD_NUMBER
-#else
-#define VERSION_AS_NUMBER 1,0,0
-#endif
-
-#ifdef FLUTTER_BUILD_NAME
-#define VERSION_AS_STRING #FLUTTER_BUILD_NAME
-#else
-#define VERSION_AS_STRING "1.0.0"
-#endif
-
-VS_VERSION_INFO VERSIONINFO
- FILEVERSION VERSION_AS_NUMBER
- PRODUCTVERSION VERSION_AS_NUMBER
- FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
-#ifdef _DEBUG
- FILEFLAGS VS_FF_DEBUG
-#else
- FILEFLAGS 0x0L
-#endif
- FILEOS VOS__WINDOWS32
- FILETYPE VFT_APP
- FILESUBTYPE 0x0L
-BEGIN
-    BLOCK "StringFileInfo"
-    BEGIN
-        BLOCK "040904e4"
-        BEGIN
-            VALUE "CompanyName", "gecko.axiomteam.fr" "\0"
-            VALUE "FileDescription", "A new Flutter project." "\0"
-            VALUE "FileVersion", VERSION_AS_STRING "\0"
-            VALUE "InternalName", "gecko" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2021 gecko.axiomteam.fr. All rights reserved." "\0"
-            VALUE "OriginalFilename", "gecko.exe" "\0"
-            VALUE "ProductName", "gecko" "\0"
-            VALUE "ProductVersion", VERSION_AS_STRING "\0"
-        END
-    END
-    BLOCK "VarFileInfo"
-    BEGIN
-        VALUE "Translation", 0x409, 1252
-    END
-END
-
-#endif    // English (United States) resources
-/////////////////////////////////////////////////////////////////////////////
-
-
-
-#ifndef APSTUDIO_INVOKED
-/////////////////////////////////////////////////////////////////////////////
-//
-// Generated from the TEXTINCLUDE 3 resource.
-//
-
-
-/////////////////////////////////////////////////////////////////////////////
-#endif    // not APSTUDIO_INVOKED

windows/runner/flutter_window.cpp

-#include "flutter_window.h"
-
-#include <optional>
-
-#include "flutter/generated_plugin_registrant.h"
-
-FlutterWindow::FlutterWindow(const flutter::DartProject& project)
-    : project_(project) {}
-
-FlutterWindow::~FlutterWindow() {}
-
-bool FlutterWindow::OnCreate() {
-  if (!Win32Window::OnCreate()) {
-    return false;
-  }
-
-  RECT frame = GetClientArea();
-
-  // The size here must match the window dimensions to avoid unnecessary surface
-  // creation / destruction in the startup path.
-  flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
-      frame.right - frame.left, frame.bottom - frame.top, project_);
-  // Ensure that basic setup of the controller was successful.
-  if (!flutter_controller_->engine() || !flutter_controller_->view()) {
-    return false;
-  }
-  RegisterPlugins(flutter_controller_->engine());
-  SetChildContent(flutter_controller_->view()->GetNativeWindow());
-  return true;
-}
-
-void FlutterWindow::OnDestroy() {
-  if (flutter_controller_) {
-    flutter_controller_ = nullptr;
-  }
-
-  Win32Window::OnDestroy();
-}
-
-LRESULT
-FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
-                              WPARAM const wparam,
-                              LPARAM const lparam) noexcept {
-  // Give Flutter, including plugins, an opportunity to handle window messages.
-  if (flutter_controller_) {
-    std::optional<LRESULT> result =
-        flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam,
-                                                      lparam);
-    if (result) {
-      return *result;
-    }
-  }
-
-  switch (message) {
-    case WM_FONTCHANGE:
-      flutter_controller_->engine()->ReloadSystemFonts();
-      break;
-  }
-
-  return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
-}

windows/runner/flutter_window.h

-#ifndef RUNNER_FLUTTER_WINDOW_H_
-#define RUNNER_FLUTTER_WINDOW_H_
-
-#include <flutter/dart_project.h>
-#include <flutter/flutter_view_controller.h>
-
-#include <memory>
-
-#include "win32_window.h"
-
-// A window that does nothing but host a Flutter view.
-class FlutterWindow : public Win32Window {
- public:
-  // Creates a new FlutterWindow hosting a Flutter view running |project|.
-  explicit FlutterWindow(const flutter::DartProject& project);
-  virtual ~FlutterWindow();
-
- protected:
-  // Win32Window:
-  bool OnCreate() override;
-  void OnDestroy() override;
-  LRESULT MessageHandler(HWND window, UINT const message, WPARAM const wparam,
-                         LPARAM const lparam) noexcept override;
-
- private:
-  // The project to run.
-  flutter::DartProject project_;
-
-  // The Flutter instance hosted by this window.
-  std::unique_ptr<flutter::FlutterViewController> flutter_controller_;
-};
-
-#endif  // RUNNER_FLUTTER_WINDOW_H_

windows/runner/main.cpp

-#include <flutter/dart_project.h>
-#include <flutter/flutter_view_controller.h>
-#include <windows.h>
-
-#include "flutter_window.h"
-#include "utils.h"
-
-int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
-                      _In_ wchar_t *command_line, _In_ int show_command) {
-  // Attach to console when present (e.g., 'flutter run') or create a
-  // new console when running with a debugger.
-  if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) {
-    CreateAndAttachConsole();
-  }
-
-  // Initialize COM, so that it is available for use in the library and/or
-  // plugins.
-  ::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
-
-  flutter::DartProject project(L"data");
-
-  std::vector<std::string> command_line_arguments =
-      GetCommandLineArguments();
-
-  project.set_dart_entrypoint_arguments(std::move(command_line_arguments));
-
-  FlutterWindow window(project);
-  Win32Window::Point origin(10, 10);
-  Win32Window::Size size(1280, 720);
-  if (!window.CreateAndShow(L"gecko", origin, size)) {
-    return EXIT_FAILURE;
-  }
-  window.SetQuitOnClose(true);
-
-  ::MSG msg;
-  while (::GetMessage(&msg, nullptr, 0, 0)) {
-    ::TranslateMessage(&msg);
-    ::DispatchMessage(&msg);
-  }
-
-  ::CoUninitialize();
-  return EXIT_SUCCESS;
-}

windows/runner/resource.h

-//{{NO_DEPENDENCIES}}
-// Microsoft Visual C++ generated include file.
-// Used by Runner.rc
-//
-#define IDI_APP_ICON                    101
-
-// Next default values for new objects
-//
-#ifdef APSTUDIO_INVOKED
-#ifndef APSTUDIO_READONLY_SYMBOLS
-#define _APS_NEXT_RESOURCE_VALUE        102
-#define _APS_NEXT_COMMAND_VALUE         40001
-#define _APS_NEXT_CONTROL_VALUE         1001
-#define _APS_NEXT_SYMED_VALUE           101
-#endif
-#endif