fix：1.修正同结构导入问题。2.历史界面添加删除。3.导入排序问题。

src/uhistory.cpp

@@ -10,6 +10,7 @@ CUIHistory::CUIHistory(QWidget* parent, CHistory* his) : QDialog(parent), ui(new
 
     connect(ui->btnExit, &QPushButton::clicked, this, [&]() { close(); });
     connect(ui->btnOk, &QPushButton::clicked, this, [&]() { select_ok(); });
+    connect(ui->btnDel, &QPushButton::clicked, this, [&]() { del_item(); });
 }
 
 CUIHistory::~CUIHistory()
@@ -42,3 +43,22 @@ void CUIHistory::select_ok()
     cur_ = re[0]->text();
     close();
 }
+
+void CUIHistory::del_item()
+{
+    auto re = ui->listWidget->selectedItems();
+    if (re.empty()) {
+        return ;
+    }
+    for (auto& item : re) {
+        delete ui->listWidget->takeItem(ui->listWidget->row(item));
+    }
+    std::vector<std::string> vec;
+    for (int i = 0; i < ui->listWidget->count(); ++i) {
+        QListWidgetItem* item = ui->listWidget->item(i);
+        if (item) {
+            vec.push_back(item->text().toStdString());
+        }
+    }
+    his_->write_file(vec);
+}