first commit

Window/WindowManager.cs

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+using anjianjingling.Native;
+using System.Diagnostics;
+using System.Text;
+
+namespace anjianjingling.Window
+{
+    public record WindowInfo(IntPtr Handle, string Title);
+
+    /// <summary>
+    /// 系统级窗口管理：枚举、查找、激活、启动程序、后台消息投递。
+    /// </summary>
+    public sealed class WindowManager
+    {
+        /// <summary>启动外部程序或打开文件。</summary>
+        public void Launch(string path, string? arguments = null)
+        {
+            var psi = new ProcessStartInfo
+            {
+                FileName = path,
+                UseShellExecute = true
+            };
+            if (!string.IsNullOrWhiteSpace(arguments)) psi.Arguments = arguments;
+            Process.Start(psi);
+        }
+
+        /// <summary>枚举所有可见且有标题的顶层窗口。</summary>
+        public List<WindowInfo> GetWindows()
+        {
+            var list = new List<WindowInfo>();
+            Win32.EnumWindows((h, _) =>
+            {
+                if (Win32.IsWindowVisible(h))
+                {
+                    int len = Win32.GetWindowTextLength(h);
+                    if (len > 0)
+                    {
+                        var sb = new StringBuilder(len + 1);
+                        Win32.GetWindowText(h, sb, sb.Capacity);
+                        var title = sb.ToString().Trim();
+                        if (title.Length > 0) list.Add(new WindowInfo(h, title));
+                    }
+                }
+                return true;
+            }, IntPtr.Zero);
+            return list;
+        }
+
+        /// <summary>按标题关键字（包含匹配，不区分大小写）查找窗口。</summary>
+        public IntPtr FindByTitle(string keyword)
+        {
+            foreach (var w in GetWindows())
+            {
+                if (w.Title.Contains(keyword, StringComparison.OrdinalIgnoreCase))
+                    return w.Handle;
+            }
+            return IntPtr.Zero;
+        }
+
+        /// <summary>激活窗口并前置（最小化则恢复，使用 AttachThreadInput 解决前台锁定）。</summary>
+        public bool Activate(IntPtr hWnd)
+        {
+            if (hWnd == IntPtr.Zero) return false;
+            if (Win32.IsIconic(hWnd)) Win32.ShowWindow(hWnd, Win32.SW_RESTORE);
+
+            uint foregroundThread = Win32.GetWindowThreadProcessId(Win32.GetForegroundWindow(), out _);
+            uint currentThread = Win32.GetCurrentThreadId();
+
+            if (foregroundThread != currentThread)
+            {
+                Win32.AttachThreadInput(currentThread, foregroundThread, true);
+                Win32.SetForegroundWindow(hWnd);
+                Win32.AttachThreadInput(currentThread, foregroundThread, false);
+            }
+            else
+            {
+                Win32.SetForegroundWindow(hWnd);
+            }
+            return true;
+        }
+
+        /// <summary>按标题激活。</summary>
+        public bool ActivateByTitle(string keyword)
+        {
+            var h = FindByTitle(keyword);
+            return h != IntPtr.Zero && Activate(h);
+        }
+
+        /// <summary>获取窗口屏幕矩形。</summary>
+        public Rectangle? GetBounds(IntPtr hWnd)
+        {
+            if (Win32.GetWindowRect(hWnd, out var r))
+                return new Rectangle(r.Left, r.Top, r.Width, r.Height);
+            return null;
+        }
+
+        /// <summary>
+        /// 后台点击：向窗口句柄 PostMessage 发送鼠标按下/弹起（客户区坐标），不抢焦点。
+        /// 注意：对 DirectX/自绘程序可能无效。
+        /// </summary>
+        public void PostClick(IntPtr hWnd, int clientX, int clientY, bool right = false)
+        {
+            var lp = Win32.MakeLParam(clientX, clientY);
+            uint down = right ? Win32.WM_RBUTTONDOWN : Win32.WM_LBUTTONDOWN;
+            uint up = right ? Win32.WM_RBUTTONUP : Win32.WM_LBUTTONUP;
+            Win32.PostMessage(hWnd, down, Win32.MK_LBUTTON, lp);
+            Thread.Sleep(60);
+            Win32.PostMessage(hWnd, up, IntPtr.Zero, lp);
+        }
+    }
+}