修复工具栏分隔条显示问题，在DataGridViewTempDiff_SelectionChanged中添加分隔条可见性控制

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

@@ -451,6 +451,18 @@ namespace JoyD.Windows.CS
         {
             try
             {
+                // 获取工具栏分隔条引用
+                ToolStripSeparator toolStripSeparator = null;
+                // 查找温差图例按钮和画笔大小按钮之间的分隔条
+                for (int i = 0; i < toolStrip.Items.Count - 1; i++)
+                {
+                    if (toolStrip.Items[i] == btnDeleteTempDiff && toolStrip.Items[i + 1] is ToolStripSeparator)
+                    {
+                        toolStripSeparator = toolStrip.Items[i + 1] as ToolStripSeparator;
+                        break;
+                    }
+                }
+                
                 // 检查当前是否在温差图绘制状态下
                 // 只有同时满足：处于温差图绘制模式、有选中的图例行、并且dataGridViewTempDiff控件可见时，才显示画笔大小按钮
                 if (_isTempDiffDrawingMode && dataGridViewTempDiff.SelectedRows.Count > 0 && dataGridViewTempDiff.Visible)
@@ -464,6 +476,13 @@ namespace JoyD.Windows.CS
                     
                     // 确保当前选中的画笔大小按钮处于选中状态
                     UpdateBrushSizeButtonSelection(_currentBrushSize);
+                    
+                    // 控制分隔条可见性：当前后都有按钮显示时显示分隔条
+                    // 前有btnDeleteTempDiff显示，后有btnBrushSize1显示
+                    if (toolStripSeparator != null)
+                    {
+                        toolStripSeparator.Visible = btnDeleteTempDiff.Visible && btnBrushSize1.Visible;
+                    }
                 }
                 else
                 {
@@ -473,6 +492,12 @@ namespace JoyD.Windows.CS
                     btnBrushSize5.Visible = false;
                     btnBrushSize10.Visible = false;
                     btnBrushSize15.Visible = false;
+                    
+                    // 隐藏分隔条
+                    if (toolStripSeparator != null)
+                    {
+                        toolStripSeparator.Visible = false;
+                    }
                 }
             }
             catch (Exception ex)
@@ -585,6 +610,18 @@ namespace JoyD.Windows.CS
         {
             try
             {
+                // 获取工具栏分隔条引用
+                ToolStripSeparator toolStripSeparator = null;
+                // 查找温差图例按钮和画笔大小按钮之间的分隔条
+                for (int i = 0; i < toolStrip.Items.Count - 1; i++)
+                {
+                    if (toolStrip.Items[i] == btnDeleteTempDiff && toolStrip.Items[i + 1] is ToolStripSeparator)
+                    {
+                        toolStripSeparator = toolStrip.Items[i + 1] as ToolStripSeparator;
+                        break;
+                    }
+                }
+                
                 switch (state)
                 {
                     case 0: // 初始状态/就绪状态
@@ -601,6 +638,11 @@ namespace JoyD.Windows.CS
                         btnBrushSize5.Visible = false;
                         btnBrushSize10.Visible = false;
                         btnBrushSize15.Visible = false;
+                        // 控制分隔条可见性：前后都没有显示的按钮，隐藏分隔条
+                        if (toolStripSeparator != null)
+                        {
+                            toolStripSeparator.Visible = false;
+                        }
                         break;
                     case 1: // 选中区域状态
                         btnDrawRegion.Visible = false;   // 隐藏绘制区域按钮
@@ -616,6 +658,11 @@ namespace JoyD.Windows.CS
                         btnBrushSize5.Visible = false;
                         btnBrushSize10.Visible = false;
                         btnBrushSize15.Visible = false;
+                        // 控制分隔条可见性：前后都没有显示的按钮，隐藏分隔条
+                        if (toolStripSeparator != null)
+                        {
+                            toolStripSeparator.Visible = false;
+                        }
                         break;
                     case 2: // 绘制状态
                         btnSelectColor.Visible = true;   // 显示颜色选择按钮
@@ -631,6 +678,11 @@ namespace JoyD.Windows.CS
                         btnBrushSize5.Visible = false;
                         btnBrushSize10.Visible = false;
                         btnBrushSize15.Visible = false;
+                        // 控制分隔条可见性：前后都没有显示的按钮，隐藏分隔条
+                        if (toolStripSeparator != null)
+                        {
+                            toolStripSeparator.Visible = false;
+                        }
                         break;
                     case 3: // 温差图绘制状态
                         btnDrawTempDiff.Visible = true;  // 显示温差图按钮
@@ -646,6 +698,12 @@ namespace JoyD.Windows.CS
                         btnBrushSize5.Visible = false;
                         btnBrushSize10.Visible = false;
                         btnBrushSize15.Visible = false;
+                        // 控制分隔条可见性：只有前有按钮显示且后有按钮显示时才显示分隔条
+                        // 在温差图绘制初始状态，画笔按钮默认隐藏，所以分隔条也隐藏
+                        if (toolStripSeparator != null)
+                        {
+                            toolStripSeparator.Visible = false;
+                        }
                         break;
                 }
             }