diff --git a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
index ee1e2c9..17a56ac 100644
--- a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
+++ b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
@@ -258,6 +258,8 @@ namespace JoyD.Windows.CS
             dataGridViewTempDiff.EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(DataGridViewTempDiff_EditingControlShowing);
             // 添加单元格双击事件用于触发编辑模式
             dataGridViewTempDiff.CellDoubleClick += new DataGridViewCellEventHandler(DataGridViewTempDiff_CellDoubleClick);
+            // 添加选择变更事件用于控制画笔大小按钮的显示
+            dataGridViewTempDiff.SelectionChanged += new EventHandler(DataGridViewTempDiff_SelectionChanged);
             
             // 添加一些示例数据
             AddSampleTempDiffData();
@@ -438,6 +440,42 @@ namespace JoyD.Windows.CS
             // 移除颜色列点击处理逻辑，颜色列修改改为双击触发
             // 温差值列点击不再直接进入编辑模式，改为双击进入
         }
+
+        /// <summary>
+        /// 温差图例选择变更事件处理
+        /// </summary>
+        private void DataGridViewTempDiff_SelectionChanged(object sender, EventArgs e)
+        {
+            try
+            {
+                // 只有在温差图绘制状态下，且有选中行时，显示画笔大小按钮
+                if (_isTempDiffDrawingMode && dataGridViewTempDiff.SelectedRows.Count > 0)
+                {
+                    // 显示所有画笔大小按钮
+                    btnBrushSize1.Visible = true;
+                    btnBrushSize3.Visible = true;
+                    btnBrushSize5.Visible = true;
+                    btnBrushSize10.Visible = true;
+                    btnBrushSize15.Visible = true;
+                    
+                    // 确保当前选中的画笔大小按钮处于选中状态
+                    UpdateBrushSizeButtonSelection(_currentBrushSize);
+                }
+                else
+                {
+                    // 隐藏所有画笔大小按钮
+                    btnBrushSize1.Visible = false;
+                    btnBrushSize3.Visible = false;
+                    btnBrushSize5.Visible = false;
+                    btnBrushSize10.Visible = false;
+                    btnBrushSize15.Visible = false;
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine("更新画笔大小按钮可见性失败: " + ex.Message);
+            }
+        }
         
         private void DataGridViewTempDiff_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
         {
@@ -551,6 +589,14 @@ namespace JoyD.Windows.CS
                         btnSelectColor.Visible = false;  // 隐藏颜色选择按钮
                         btnDeleteRegion.Visible = false; // 隐藏删除区域按钮
                         dataGridViewTempDiff.Visible = false; // 隐藏温差图例表格
+                        btnAddTempDiff.Visible = false;  // 隐藏添加温差图例按钮
+                        btnDeleteTempDiff.Visible = false; // 隐藏删除温差图例按钮
+                        // 隐藏所有画笔大小按钮
+                        btnBrushSize1.Visible = false;
+                        btnBrushSize3.Visible = false;
+                        btnBrushSize5.Visible = false;
+                        btnBrushSize10.Visible = false;
+                        btnBrushSize15.Visible = false;
                         break;
                     case 1: // 选中区域状态
                         btnDrawRegion.Visible = false;   // 隐藏绘制区域按钮
@@ -558,6 +604,14 @@ namespace JoyD.Windows.CS
                         btnSelectColor.Visible = true;   // 显示颜色选择按钮
                         btnDeleteRegion.Visible = true;  // 显示删除区域按钮
                         dataGridViewTempDiff.Visible = false; // 隐藏温差图例表格
+                        btnAddTempDiff.Visible = false;  // 隐藏添加温差图例按钮
+                        btnDeleteTempDiff.Visible = false; // 隐藏删除温差图例按钮
+                        // 隐藏所有画笔大小按钮
+                        btnBrushSize1.Visible = false;
+                        btnBrushSize3.Visible = false;
+                        btnBrushSize5.Visible = false;
+                        btnBrushSize10.Visible = false;
+                        btnBrushSize15.Visible = false;
                         break;
                     case 2: // 绘制状态
                         btnSelectColor.Visible = true;   // 显示颜色选择按钮
@@ -565,6 +619,14 @@ namespace JoyD.Windows.CS
                         btnDeleteRegion.Visible = false; // 隐藏删除区域按钮
                         btnDrawTempDiff.Visible = false; // 隐藏温差图按钮
                         dataGridViewTempDiff.Visible = false; // 隐藏温差图例表格
+                        btnAddTempDiff.Visible = false;  // 隐藏添加温差图例按钮
+                        btnDeleteTempDiff.Visible = false; // 隐藏删除温差图例按钮
+                        // 隐藏所有画笔大小按钮
+                        btnBrushSize1.Visible = false;
+                        btnBrushSize3.Visible = false;
+                        btnBrushSize5.Visible = false;
+                        btnBrushSize10.Visible = false;
+                        btnBrushSize15.Visible = false;
                         break;
                     case 3: // 温差图绘制状态
                         btnDrawTempDiff.Visible = true;  // 显示温差图按钮
@@ -574,6 +636,12 @@ namespace JoyD.Windows.CS
                         dataGridViewTempDiff.Visible = true;  // 显示温差图例表格
                         btnAddTempDiff.Visible = true;   // 显示添加温差图例按钮
                         btnDeleteTempDiff.Visible = true; // 显示删除温差图例按钮
+                        // 初始隐藏画笔大小按钮，等待用户选择温差图例后在SelectionChanged事件中显示
+                        btnBrushSize1.Visible = false;
+                        btnBrushSize3.Visible = false;
+                        btnBrushSize5.Visible = false;
+                        btnBrushSize10.Visible = false;
+                        btnBrushSize15.Visible = false;
                         break;
                 }
             }