移除mask层：删除了maskImageBox相关的所有代码，包括控件声明、初始化和相关方法

Windows/CS/Framework4.0/Toprie/Toprie/Camera.cs

@@ -19,8 +19,7 @@ namespace JoyD.Windows.CS.Toprie
         // 是否正在接收图像
         private bool _isReceivingImage = false;
         
-        // 是否暂停图像更新
-        private bool _isImageUpdatePaused = false;
+
         
         // 项目路径，用于数据文件的存取
         private string _projectPath = "";
@@ -70,22 +69,17 @@ namespace JoyD.Windows.CS.Toprie
             
             try
             {   
-                // 切换暂停状态
-                _isImageUpdatePaused = !_isImageUpdatePaused;
+                bool isPaused = pauseImageUpdateToolStripMenuItem.Text == "暂停图像更新";
                 
-                if (_isImageUpdatePaused)
+                if (isPaused)
                 {   
                     pauseImageUpdateToolStripMenuItem.Text = "恢复图像更新";
                     Console.WriteLine("图像更新已暂停");
-                    // 显示暂停遮罩
-                    UpdateMaskDisplay();
                 }
                 else
                 {   
                     pauseImageUpdateToolStripMenuItem.Text = "暂停图像更新";
                     Console.WriteLine("图像更新已恢复");
-                    // 清除暂停遮罩
-                    UpdateMaskDisplay();
                     
                     // 恢复时，立即停止并重新开始图像接收，确保获取最新图像
                     if (_isReceivingImage && _deviceManager != null)
@@ -101,87 +95,6 @@ namespace JoyD.Windows.CS.Toprie
             }
         }
 
-        /// <summary>
-        /// 更新遮罩层的显示内容
-        /// </summary>
-        private void UpdateMaskDisplay()
-        {   
-            try
-            {   
-                Console.WriteLine($"UpdateMaskDisplay called, _isImageUpdatePaused: {_isImageUpdatePaused}");
-                
-                // 在UI线程上操作
-                if (InvokeRequired)
-                {   
-                    Invoke(new Action(UpdateMaskDisplay));
-                    return;
-                }
-                
-                if (_isImageUpdatePaused)
-                {   
-                    // 使用固定大小512*384，与图像层的src图像大小一致
-                    const int bitmapWidth = 512;
-                    const int bitmapHeight = 384;
-                    
-                    Console.WriteLine($"Creating bitmap with fixed size: {bitmapWidth}x{bitmapHeight}");
-                    
-                    // 创建位图
-                    Bitmap bitmap = new Bitmap(bitmapWidth, bitmapHeight);
-                    
-                    // 直接在bitmap上绘制
-                    using (Graphics g = Graphics.FromImage(bitmap))
-                    {   
-                        // 设置高质量绘制
-                        g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
-                        g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
-                        
-                        // 设置更透明的背景，50是透明度值，0完全透明，255不透明
-                        using (Brush brush = new SolidBrush(Color.FromArgb(80, Color.Black)))
-                        {   
-                            g.FillRectangle(brush, 0, 0, bitmapWidth, bitmapHeight);
-                        }
-                        
-                        // 设置文本样式
-                        Font font = new Font("微软雅黑", 48, FontStyle.Bold);
-                        Brush textBrush = new SolidBrush(Color.White);
-                        StringFormat format = new StringFormat();
-                        format.Alignment = StringAlignment.Center;
-                        format.LineAlignment = StringAlignment.Center;
-                        
-                        // 绘制"暂停"文字
-                        Console.WriteLine("Drawing '暂停' text");
-                        g.DrawString("暂停", font, textBrush, 
-                            new Rectangle(0, 0, bitmapWidth, bitmapHeight), format);
-                    }
-                    
-                    // 释放旧资源并设置新图像
-                    if (maskImageBox.Image != null)
-                    {   
-                        maskImageBox.Image.Dispose();
-                    }
-                    maskImageBox.Image = bitmap;
-                    maskImageBox.Visible = true;
-                    Console.WriteLine("maskImageBox updated");
-                }
-                else
-                {   
-                    // 清除遮罩
-                    Console.WriteLine("Clearing maskImageBox image");
-                    if (maskImageBox.Image != null)
-                    {   
-                        maskImageBox.Image.Dispose();
-                        maskImageBox.Image = null;
-                    }
-                    maskImageBox.Visible = false; // 非暂停时隐藏遮罩
-                    Console.WriteLine("maskImageBox cleared");
-                }
-            }
-            catch (Exception ex)
-            {   
-                Console.WriteLine($"更新遮罩显示时出错: {ex.Message}, StackTrace: {ex.StackTrace}");
-            }
-        }
-
         public Camera()
         {   
             InitializeComponent();
@@ -412,7 +325,8 @@ namespace JoyD.Windows.CS.Toprie
         private void DeviceManager_ImageReceived(object sender, ImageReceivedEventArgs e)
         {   
             // 如果图像更新已暂停，则不更新UI
-            if (_isImageUpdatePaused)
+            // 通过菜单项文本判断是否暂停
+            if (pauseImageUpdateToolStripMenuItem.Text == "恢复图像更新")
                 return;
             if (DesignMode) return;
             Image image = null;
@@ -1145,15 +1059,7 @@ namespace JoyD.Windows.CS.Toprie
         /// </summary>
         private void ContextMenuStrip1_Opening(object sender, System.ComponentModel.CancelEventArgs e)
         {
-            // 更新暂停菜单项的文本和状态
-            if (_isImageUpdatePaused)
-            {
-                pauseImageUpdateToolStripMenuItem.Text = "恢复图像更新";
-            }
-            else
-            {
-                pauseImageUpdateToolStripMenuItem.Text = "暂停图像更新";
-            }
+            // 暂停菜单项的文本已经在点击事件中更新，这里无需再次更新
             if (DesignMode) return;
             try
             {
@@ -1183,7 +1089,7 @@ namespace JoyD.Windows.CS.Toprie
                 rainbow2ToolStripMenuItem.Checked = false;
                 
                 // 尝试获取当前色彩模式并更新对应菜单项的选中状态
-                if (!_isImageUpdatePaused && _deviceManager != null && _deviceManager.ConnectionStatus == ConnectionStatus.Connected)
+                if (pauseImageUpdateToolStripMenuItem.Text == "暂停图像更新" && _deviceManager != null && _deviceManager.ConnectionStatus == ConnectionStatus.Connected)
                 {
                     try
                     {