fix: 使用更规范的方式删除qt控件

Author: chenjintang-shrimp

app/common/notification/notification_service.py

@@ -733,7 +733,6 @@ def update_content(self, student_labels, settings=None):
             item = self.content_layout.takeAt(0)
             widget = item.widget()
             if widget:
-                widget.setParent(None)  # 重要：先设置父控件为None
                 widget.deleteLater()
 
         # 添加新内容

app/page_building/main_window_page.py

@@ -46,7 +46,6 @@ def clear_content(self):
             item = self.inner_layout_personal.takeAt(0)
             if item and item.widget():
                 widget = item.widget()
-                widget.setParent(None)
                 widget.deleteLater()
         self.content_created = False
         self.contentWidget = None
@@ -84,7 +83,6 @@ def clear_content(self):
             item = self.inner_layout_personal.takeAt(0)
             if item and item.widget():
                 widget = item.widget()
-                widget.setParent(None)
                 widget.deleteLater()
         self.content_created = False
         self.contentWidget = None

app/page_building/page_template.py

@@ -493,10 +493,6 @@ def _unload_page(self, page_name: str):
             inner_layout = info.get("layout")
 
             if widget and inner_layout:
-                # 从布局中移除
-                inner_layout.removeWidget(widget)
-                # 安全删除widget
-                widget.setParent(None)
                 widget.deleteLater()
 
                 # 清除引用

app/page_building/window_template.py

@@ -132,8 +132,7 @@ def initWindow(self, title: str, width: int = 700, height: int = 500) -> None:
                 old_label = child
                 old_parent = old_label.parent()
 
-                # 移除父控件并删除
-                old_label.setParent(None)
+                # 删除控件
                 old_label.deleteLater()
 
                 # 创建新的BodyLabel

app/view/another_window/remaining_list.py

@@ -490,7 +490,6 @@ def _clear_cards(self) -> None:
         for card in self.cards:
             try:
                 card.hide()
-                card.setParent(None)
                 card.deleteLater()
             except Exception:
                 pass

app/view/floating_window/levitation.py

@@ -334,7 +334,6 @@ def _build_ui(self):
                 item = lay.takeAt(0)
                 w = item.widget()
                 if w:
-                    w.setParent(None)
                     w.deleteLater()
             lay.deleteLater()
         if not self._layout:

app/view/settings/settings.py

@@ -522,7 +522,6 @@ def _unload_settings_page(self, page_name: str):
                 container.layout().removeWidget(real_page)
 
             # 安全删除widget
-            real_page.setParent(None)
             real_page.deleteLater()
 
             # 重新添加工厂以便下次访问时可以重新创建