add：添加历史可以双击选取。

src/uhistory.cpp

@@ -3,8 +3,7 @@
 #include "src/ui_uhistory.h"
 #include "ui_uhistory.h"
 
-CUIHistory::CUIHistory(QWidget* parent, CHistory* his)
-    : QDialog(parent), ui(new Ui::CUIHistory)
+CUIHistory::CUIHistory(QWidget* parent, CHistory* his) : QDialog(parent), ui(new Ui::CUIHistory)
 {
     ui->setupUi(this);
     his_ = his;
@@ -12,6 +11,7 @@ CUIHistory::CUIHistory(QWidget* parent, CHistory* his)
     connect(ui->btnExit, &QPushButton::clicked, this, [&]() { close(); });
     connect(ui->btnOk, &QPushButton::clicked, this, [&]() { select_ok(); });
     connect(ui->btnDel, &QPushButton::clicked, this, [&]() { del_item(); });
+    connect(ui->listWidget, &QListWidget::doubleClicked, this, [&](const QModelIndex& index) { double_click(index); });
 }
 
 CUIHistory::~CUIHistory()
@@ -63,3 +63,9 @@ void CUIHistory::del_item()
     }
     his_->write_file(vec);
 }
+
+void CUIHistory::double_click(const QModelIndex& index)
+{
+    cur_ = index.data().toString();
+    close();
+}