fix：修正界面更新逻辑问题。

src/attribute_edit.h

@@ -3,6 +3,7 @@
 
 #include <QDialog>
 #include <QTableWidget>
+
 #include "xml_opr.h"
 
 namespace Ui {
@@ -30,13 +31,13 @@ private:
     void handle_ok();
 
 public:
-    bool is_ok_{ false };
+    bool is_ok_{false};
 
 private:
     Ui::CAttributeEdit* ui;
-    Property_t          property_{};
-    QTableWidget*       table_{};
-    bool                is_key_edit_{true};
+    Property_t property_{};
+    QTableWidget* table_{};
+    bool is_key_edit_{true};
 };
 
 #endif   // ATTRIBUTE_EDIT_H

src/uhistory.ui

@@ -19,6 +19,13 @@
    </item>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QPushButton" name="btnDel">
+       <property name="text">
+        <string>删除</string>
+       </property>
+      </widget>
+     </item>
      <item>
       <spacer name="horizontalSpacer">
        <property name="orientation">
@@ -32,13 +39,6 @@
        </property>
       </spacer>
      </item>
-     <item>
-      <widget class="QPushButton" name="btnDel">
-       <property name="text">
-        <string>删除</string>
-       </property>
-      </widget>
-     </item>
      <item>
       <widget class="QPushButton" name="btnOk">
        <property name="sizePolicy">
@@ -52,6 +52,19 @@
        </property>
       </widget>
      </item>
+     <item>
+      <spacer name="horizontalSpacer_2">
+       <property name="orientation">
+        <enum>Qt::Orientation::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
      <item>
       <widget class="QPushButton" name="btnExit">
        <property name="sizePolicy">