tree = new QTreeWidget(this);
this->setSelectionMode(QAbstractItemView::ExtendedSelection);
tree->setColumnCount(2);
this->setColumnWidth(0, 100); //设置列宽
this->setColumnWidth(1, 300);
tree = new QTreeWidget(this);
this->setSelectionMode(QAbstractItemView::ExtendedSelection);
tree->setColumnCount(2);
this->setColumnWidth(0, 100); //设置列宽
this->setColumnWidth(1, 300);