在工具栏增加绘制温差图按钮（btnDrawTempDiff）

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

@@ -28,6 +28,7 @@ namespace JoyD.Windows.CS
         /// </summary>
         private void InitializeComponent()
         {
+            this.btnDrawTempDiff = new System.Windows.Forms.ToolStripButton();
             this.splitContainer = new System.Windows.Forms.SplitContainer();
             this.groupBoxTempDisplay = new System.Windows.Forms.GroupBox();
             this.picBoxTemp = new System.Windows.Forms.PictureBox();
@@ -110,7 +111,8 @@ namespace JoyD.Windows.CS
             this.toolStrip.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
             this.btnDrawRegion,
             this.btnSelectColor,
-            this.btnDeleteRegion});
+            this.btnDeleteRegion,
+            this.btnDrawTempDiff});
             this.toolStrip.LayoutStyle = System.Windows.Forms.ToolStripLayoutStyle.Flow;
             this.toolStrip.Location = new System.Drawing.Point(0, 0);
             this.toolStrip.Name = "toolStrip";
@@ -147,6 +149,16 @@ namespace JoyD.Windows.CS
             this.btnDeleteRegion.ToolTipText = "删除选中的区域";
             this.btnDeleteRegion.Click += new System.EventHandler(this.BtnDeleteRegion_Click);
             // 
+            // btnDrawTempDiff
+            // 
+            this.btnDrawTempDiff.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
+            this.btnDrawTempDiff.ImageTransparentColor = System.Drawing.Color.Transparent;
+            this.btnDrawTempDiff.Name = "btnDrawTempDiff";
+            this.btnDrawTempDiff.Size = new System.Drawing.Size(23, 4);
+            this.btnDrawTempDiff.Text = "绘制温差图";
+            this.btnDrawTempDiff.ToolTipText = "绘制温差对比图";
+            this.btnDrawTempDiff.Click += new System.EventHandler(this.BtnDrawTempDiff_Click);
+            // 
             // btnDrawRegion
             // 
             this.btnDrawRegion.Click += new System.EventHandler(this.BtnDrawRegion_Click);
@@ -200,5 +212,6 @@ namespace JoyD.Windows.CS
         private System.Windows.Forms.ToolStripButton btnDrawRegion;
         private System.Windows.Forms.ToolStripButton btnSelectColor;
         private System.Windows.Forms.ToolStripButton btnDeleteRegion;
+        private System.Windows.Forms.ToolStripButton btnDrawTempDiff;
     }
 }

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

@@ -135,6 +135,15 @@ namespace JoyD.Windows.CS
             }
         }
         
+        /// <summary>
+        /// 绘制温差图按钮点击事件
+        /// </summary>
+        private void BtnDrawTempDiff_Click(object sender, EventArgs e)
+        {
+            // 温差图绘制功能实现
+            // TODO: 实现温差图绘制逻辑
+        }
+
         /// <summary>
         /// 绘制区域按钮点击事件
         /// </summary>
@@ -705,6 +714,41 @@ namespace JoyD.Windows.CS
             
             // 设置颜色选择按钮的图标
             UpdateColorButtonIcon();
+            
+            // 设置绘制温差图按钮的图标
+            try
+            {                
+                Bitmap tempDiffIcon = new Bitmap(24, 24);
+                using (Graphics g = Graphics.FromImage(tempDiffIcon))
+                {
+                    // 设置高质量绘图
+                    g.SmoothingMode = SmoothingMode.AntiAlias;
+                    
+                    // 清除背景为透明
+                    g.Clear(Color.Transparent);
+                    
+                    // 绘制表示温差的图标 - 使用渐变效果
+                    // 绘制底部蓝色（低温）和顶部红色（高温）的矩形条
+                    using (LinearGradientBrush gradientBrush = new LinearGradientBrush(
+                        new Rectangle(8, 5, 8, 14),
+                        Color.Blue,    // 低温端
+                        Color.Red,     // 高温端
+                        LinearGradientMode.Vertical))
+                    {
+                        g.FillRectangle(gradientBrush, 8, 5, 8, 14);
+                    }
+                    
+                    // 添加边框
+                    g.DrawRectangle(new Pen(Color.Black, 1), 8, 5, 8, 14);
+                }
+                
+                btnDrawTempDiff.Image = tempDiffIcon;
+                btnDrawTempDiff.ImageTransparentColor = Color.Transparent;
+            }
+            catch (Exception ex)
+            {                
+                Console.WriteLine("温差图按钮图标设置失败: " + ex.Message);
+            }
         }
         
         /// <summary>