fix

windows/flutter/generated_plugin_registrant.cc

@@ -6,6 +6,15 @@
 
 #include "generated_plugin_registrant.h"
 
+#include <screen_retriever/screen_retriever_plugin.h>
+#include <tray_manager/tray_manager_plugin.h>
+#include <window_manager/window_manager_plugin.h>
 
 void RegisterPlugins(flutter::PluginRegistry* registry) {
+  ScreenRetrieverPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("ScreenRetrieverPlugin"));
+  TrayManagerPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("TrayManagerPlugin"));
+  WindowManagerPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("WindowManagerPlugin"));
 }

windows/flutter/generated_plugins.cmake

@@ -3,6 +3,9 @@
 #
 
 list(APPEND FLUTTER_PLUGIN_LIST
+  screen_retriever
+  tray_manager
+  window_manager
 )
 
 list(APPEND FLUTTER_FFI_PLUGIN_LIST