在qtablewidget外面的容器设置布局管理器，然后 qt4 table->horizontalHeader()->setStretchLastSection(true);table->horizontalHeader()->setResizeMode(QHeaderView::Stretch);qt5 /*设置tablewidget等宽*/ QHeaderView* headerView = ui->tableWidget-horizontalHeader();headerView->setSectionResizeMode(QHeade...