Make scrollbar width to 40 which in operation log.

src/UserOperationLogForm.cpp

@@ -6,6 +6,7 @@
 #include <QVBoxLayout>
 #include <QHBoxLayout>
 #include <QAbstractListModel>
+#include <QScrollBar>
 #include "log/UserOperationLog.h"
 #include "log/LogFileTableModel.h"
 #include <QHeaderView>
@@ -51,6 +52,8 @@ UserOperationLogForm::UserOperationLogForm(QWidget* parent) {
     table->setColumnWidth(0, 250);
     table->setColumnWidth(1, 250);
     table->setColumnWidth(2, 200);
+    table->verticalScrollBar()->setStyleSheet("QScrollBar:vertical { width: 40px; }");;
+
 	//暂时先放构造函数，之后需要移除，等需要时再调用
 
 	connect(btn, &QPushButton::clicked, [=]() {