diff --git a/SunnyUI/Font/UISymbolPanel.cs b/SunnyUI/Font/UISymbolPanel.cs
index 190fc0d2..bd71e61d 100644
--- a/SunnyUI/Font/UISymbolPanel.cs
+++ b/SunnyUI/Font/UISymbolPanel.cs
@@ -1,4 +1,26 @@
-using System;
+/******************************************************************************
+ * SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
+ * CopyRight (C) 2012-2023 ShenYongHua(沈永华).
+ * QQ群：56829229 QQ：17612584 EMail：SunnyUI@QQ.Com
+ *
+ * Blog:   https://www.cnblogs.com/yhuse
+ * Gitee:  https://gitee.com/yhuse/SunnyUI
+ * GitHub: https://github.com/yhuse/SunnyUI
+ *
+ * SunnyUI.dll can be used for free under the GPL-3.0 license.
+ * If you use this code, please keep this note.
+ * 如果您使用此代码，请保留此说明。
+ ******************************************************************************
+ * 文件名称: UISymbolPanel.cs
+ * 文件说明: 字体图标编辑器面板
+ * 当前版本: V3.1
+ * 创建日期: 2020-01-01
+ *
+ * 2023-11-28: V3.6.1 增加文件说明
+ * 2024-02-20: V3.6.3 设置默认尺寸
+******************************************************************************/
+
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.ComponentModel;
@@ -15,11 +37,15 @@ namespace Sunny.UI
         public UISymbolPanel()
         {
             SetStyleFlags();
+            Width = 768;
+            Height = 128;
         }
 
         public UISymbolPanel(Type fonttype, UISymbolType symbolType, int columnCount = 24)
         {
             SetStyleFlags();
+            Width = 768;
+            Height = 128;
             LoadFont(fonttype, symbolType, columnCount);
         }
 
@@ -117,8 +143,8 @@ namespace Sunny.UI
             int width = symbolSize * column;
             int height = symbolSize * row;
 
-            if (Width != width) Width = width;
-            if (Height != height) Height = height;
+            if (width > 0 && Width != width) Width = width;
+            if (height > 0 && Height != height) Height = height;
         }
 
         protected override void OnPaint(PaintEventArgs e)