v4

lib/components/windows/drag_to_move_area.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+import 'package:window_manager/window_manager.dart';
+
+class DragToMoveWrap extends StatelessWidget {
+  final Widget child;
+
+  const DragToMoveWrap({
+    Key? key,
+    required this.child,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      behavior: HitTestBehavior.translucent,
+      onPanStart: (details) {
+        windowManager.startDragging();
+      },
+      child: child,
+    );
+  }
+}