improve:窗口置顶

Ink Canvas/Windows/RandWindow.xaml.cs

@@ -5,11 +5,14 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Threading;
 using System.Windows;
 using System.Windows.Input;
+using System.Windows.Interop;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
+using System.Windows.Threading;
 using MessageBox = iNKORE.UI.WPF.Modern.Controls.MessageBox;
 
 namespace Ink_Canvas
@@ -35,6 +38,9 @@ namespace Ink_Canvas
             
             // 添加窗口关闭事件处理
             Closed += RandWindow_Closed;
+            
+            // 添加窗口显示事件处理，确保置顶
+            Loaded += RandWindow_Loaded;
         }
 
         private void LoadBackground(Settings settings)
@@ -86,6 +92,9 @@ namespace Ink_Canvas
             
             // 添加窗口关闭事件处理
             Closed += RandWindow_Closed;
+            
+            // 添加窗口显示事件处理，确保置顶
+            Loaded += RandWindow_Loaded;
 
             new Thread(() =>
             {
@@ -349,6 +358,51 @@ namespace Ink_Canvas
             }
         }
 
+        /// <summary>
+        /// 窗口加载事件处理
+        /// </summary>
+        private void RandWindow_Loaded(object sender, RoutedEventArgs e)
+        {
+            // 使用延迟确保窗口完全加载后再应用置顶
+            Dispatcher.BeginInvoke(new Action(() =>
+            {
+                try
+                {
+                    // 强制激活窗口
+                    Activate();
+                    Focus();
+                    
+                    // 设置置顶
+                    Topmost = true;
+                    
+                    // 使用Win32 API强制置顶
+                    var hwnd = new WindowInteropHelper(this).Handle;
+                    if (hwnd != IntPtr.Zero)
+                    {
+                        const int WS_EX_TOPMOST = 0x00000008;
+                        const int GWL_EXSTYLE = -20;
+                        const int SWP_NOMOVE = 0x0002;
+                        const int SWP_NOSIZE = 0x0001;
+                        const int SWP_SHOWWINDOW = 0x0040;
+                        const int SWP_NOOWNERZORDER = 0x0200;
+                        var HWND_TOPMOST = new IntPtr(-1);
+
+                        // 设置窗口样式为置顶
+                        int exStyle = GetWindowLong(hwnd, GWL_EXSTYLE);
+                        SetWindowLong(hwnd, GWL_EXSTYLE, exStyle | WS_EX_TOPMOST);
+
+                        // 强制置顶
+                        SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0,
+                            SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW | SWP_NOOWNERZORDER);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    LogHelper.WriteLogToFile($"RandWindow置顶失败: {ex.Message}", LogHelper.LogType.Error);
+                }
+            }), DispatcherPriority.Loaded);
+        }
+
         /// <summary>
         /// 窗口关闭事件处理
         /// </summary>
@@ -357,5 +411,16 @@ namespace Ink_Canvas
             // 窗口关闭时的清理工作
             // 这里可以添加必要的清理代码
         }
+
+        #region Win32 API 声明
+        [DllImport("user32.dll")]
+        private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
+
+        [DllImport("user32.dll")]
+        private static extern int GetWindowLong(IntPtr hWnd, int nIndex);
+
+        [DllImport("user32.dll")]
+        private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
+        #endregion
     }
 }