From 72abeaa1d8daf11b272ba46f13c3ef4c2ccba6b9 Mon Sep 17 00:00:00 2001
From: gaozheng <gaozheng.cn@gmail.com>
Date: Wed, 10 Jun 2026 21:31:00 +0800
Subject: [PATCH] =?UTF-8?q?fix(ui):=20=E4=BF=AE=E5=A4=8D=20DynamicFormView?=
 =?UTF-8?q?::clear()=20=E5=AF=B9=E5=B5=8C=E5=A5=97=E5=B8=83=E5=B1=80?=
 =?UTF-8?q?=E9=87=8D=E5=A4=8D=E9=87=8A=E6=94=BE=E5=AF=BC=E8=87=B4=E7=9A=84?=
 =?UTF-8?q?=E5=B4=A9=E6=BA=83?=
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it==it->layout()（QLayout 即 QLayoutItem），原代码 delete sub 后又 delete it 双重释放。
触发：clear 一个已填充表单时（切项目/重选对象→showMessage/setForm）崩溃。
---
 src/app/panels/DynamicFormView.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/app/panels/DynamicFormView.cpp b/src/app/panels/DynamicFormView.cpp
index b2dd154..a4e6c5a 100644
--- a/src/app/panels/DynamicFormView.cpp
+++ b/src/app/panels/DynamicFormView.cpp
@@ -111,15 +111,15 @@ void DynamicFormView::clear()
     while (cardLayout_->count() > 0) {
         QLayoutItem* it = cardLayout_->takeAt(0);
         if (it->widget()) it->widget()->deleteLater();
-        if (it->layout()) {
-            // 嵌套网格：先回收其子控件，再删布局，避免残留控件泄漏/重叠。
-            QLayout* sub = it->layout();
+        if (QLayout* sub = it->layout()) {
+            // 嵌套网格：先回收其子控件（控件归属 card_，删布局不会连带删），再让下方
+            // delete it 释放该嵌套布局本身——注意 it == it->layout()（QLayout 即 QLayoutItem），
+            // 故此处不可再 delete sub，否则与 delete it 重复释放导致崩溃。
             while (sub->count() > 0) {
                 QLayoutItem* sit = sub->takeAt(0);
                 if (sit->widget()) sit->widget()->deleteLater();
                 delete sit;
             }
-            delete sub;
         }
         delete it;
     }