fix(winforms): release module grid resources

插件库/Lskj.Control/ModuleGridEx.cs

@@ -165,6 +165,9 @@ namespace Lskj.Control
         /// 按钮形式展示的右键
         /// </summary>
         private List<SimpleButton> RightButtons = new List<SimpleButton>();
+        // Fonts assigned to dynamic controls are not reliably reclaimed by the
+        // DevExpress/WinForms control tree, so keep ownership explicit.
+        private readonly List<Font> _ownedFonts = new List<Font>();
         /// <summary>
         /// 附加右键菜单集合
         /// </summary>
@@ -1298,7 +1301,9 @@ namespace Lskj.Control
             if (FontSize > 0)
             {
                 //this.gcMain.GridView.Appearance.Row.Font = new Font("微软雅黑", FontSize);
-                this.gcMain.GridView.Appearance.Row.Font = new Font(this.gcMain.GridView.Appearance.Row.Font.FontFamily, FontSize);
+                Font rowFont = new Font(this.gcMain.GridView.Appearance.Row.Font.FontFamily, FontSize);
+                this.gcMain.GridView.Appearance.Row.Font = rowFont;
+                _ownedFonts.Add(rowFont);
             }
             if (SysModel.RowHeight > 0)
             {
@@ -3792,6 +3797,27 @@ namespace Lskj.Control
                     }
                     gcMain.Model = null;
                     gcMain.SysModel = null;
+
+                    try
+                    {
+                        gcMain.ReleaseResourcesForDispose();
+                    }
+                    catch
+                    {
+                        // Resource cleanup must not block the module close path.
+                    }
+                    try
+                    {
+                        if (!gcMain.IsDisposed)
+                        {
+                            gcMain.Dispose();
+                        }
+                    }
+                    catch
+                    {
+                        // A partially disposed grid must not block the module close path.
+                    }
+                    gcMain = null;
                 }
             }
             catch
@@ -3826,8 +3852,9 @@ namespace Lskj.Control
                 m_dragRowShadow.Dispose();
                 m_dragRowShadow = null;
             }
+            DisposeDynamicRightButtons();
+            DisposeOwnedFonts();
             ButtonModeRightMenus.Clear();
-            RightButtons.Clear();
             itemCommonList.Clear();
             LineStatus.Clear();
             _leftGridSearchObj = null;
@@ -4053,6 +4080,39 @@ namespace Lskj.Control
             }
         }
 
+        private void DisposeDynamicRightButtons()
+        {
+            foreach (SimpleButton button in RightButtons.ToList())
+            {
+                try
+                {
+                    button.Click -= OnModuleClick;
+                    button.Dispose();
+                }
+                catch
+                {
+                    // Cleanup must continue for the remaining controls.
+                }
+            }
+            RightButtons.Clear();
+        }
+
+        private void DisposeOwnedFonts()
+        {
+            foreach (Font font in _ownedFonts.ToList())
+            {
+                try
+                {
+                    font.Dispose();
+                }
+                catch
+                {
+                    // A partially disposed font must not stop module cleanup.
+                }
+            }
+            _ownedFonts.Clear();
+        }
+
         private void Txt_SweepCode_KeyDown(object sender, KeyEventArgs e)
         {
             try
@@ -5785,7 +5845,9 @@ namespace Lskj.Control
                 {
                     GridRightMenuModel menuModel = new GridRightMenuModel(item);
                     SimpleButton button = new SimpleButton();
-                    button.Font = new Font("宋体", 9);
+                    Font buttonFont = new Font("宋体", 9);
+                    button.Font = buttonFont;
+                    _ownedFonts.Add(buttonFont);
                     button.Text = menuModel.MenuName;
                     button.Height = 24;
                     //按钮最小大小