优化鼠标拖动

MainForm.cs

@@ -118,8 +118,8 @@ namespace QuickLauncher
 
         // 左侧面板调整相关
         private bool isResizing = false;
-        private int resizingStartX = 0;
+        private int resizingStartX = 5;
-        private int initialPanelWidth = 0;
+        private int initialPanelWidth = 5;
         private const int MIN_PANEL_WIDTH = 200;
         private const int MAX_PANEL_WIDTH = 500;
         private Panel resizeHandle;
@@ -160,6 +160,14 @@ namespace QuickLauncher
             resizeHandle.MouseDown += ResizeHandle_MouseDown;
             resizeHandle.MouseMove += ResizeHandle_MouseMove;
             resizeHandle.MouseUp += ResizeHandle_MouseUp;
+            resizeHandle.MouseEnter += (s, e) => resizeHandle.Cursor = Cursors.SizeWE;
+            resizeHandle.MouseLeave += (s, e) => 
+            {
+                if (!isResizing)
+                {
+                    resizeHandle.Cursor = Cursors.SizeWE;
+                }
+            };
 
             // 添加到左侧面板
             leftPanel.Controls.Add(resizeHandle);
@@ -1037,6 +1045,10 @@ namespace QuickLauncher
 
                 // 捕获鼠标
                 resizeHandle.Capture = true;
+                
+                // 设置鼠标光标
+                this.Cursor = Cursors.SizeWE;
+                resizeHandle.Cursor = Cursors.SizeWE;
             }
         }
 
@@ -1059,9 +1071,6 @@ namespace QuickLauncher
 
                 // 刷新布局
                 this.PerformLayout();
-
-                // 刷新分类列表，以适应新宽度
-                RefreshCategoryList();
             }
         }
 
@@ -1070,14 +1079,37 @@ namespace QuickLauncher
         {
             if (isResizing)
             {
-                isResizing = false;
+                // 先保存设置
-
-                // 释放鼠标捕获
-                resizeHandle.Capture = false;
-
-                // 保存设置
                 settings.LeftPanelWidth = leftPanel.Width;
                 SaveSettings();
+                
+                // 在鼠标释放后刷新一次分类列表
+                RefreshCategoryList();
+
+                // 重置调整状态
+                isResizing = false;
+                
+                // 恢复默认鼠标光标
+                this.Cursor = Cursors.Default;
+                
+                // 最后释放鼠标捕获
+                resizeHandle.Capture = false;
+                
+                // 确保调整手柄保持正确的光标
+                resizeHandle.Cursor = Cursors.SizeWE;
+            }
+        }
+
+        // 添加窗体鼠标移动事件处理
+        protected override void OnMouseMove(MouseEventArgs e)
+        {
+            base.OnMouseMove(e);
+            
+            // 如果正在调整大小，确保鼠标光标保持为调整大小状态
+            if (isResizing)
+            {
+                this.Cursor = Cursors.SizeWE;
+                resizeHandle.Cursor = Cursors.SizeWE;
             }
         }
 
@@ -1191,7 +1223,19 @@ namespace QuickLauncher
             if (categories == null)
                 return;
 
+            // 保存resizeHandle的引用
+            Panel savedResizeHandle = resizeHandle;
+            
+            // 清除所有控件，但保留resizeHandle
             leftPanel.Controls.Clear();
+            
+            // 重新添加resizeHandle
+            if (savedResizeHandle != null)
+            {
+                leftPanel.Controls.Add(savedResizeHandle);
+                savedResizeHandle.BringToFront();
+            }
+            
             int buttonY = 10;
 
             foreach (var category in categories.Keys)