在QTableView中加宽滑块

QScrollBar* horizontalScrollBar = tableView->horizontalScrollBar();
QScrollBar* verticalScrollBar = tableView->verticalScrollBar();

int sliderWidth = 20; // 设置滑块宽度为20像素
horizontalScrollBar->setStyleSheet(QString("QScrollBar::horizontal {"
                                            "height: %1px;"
                                            "}"
                                            "QScrollBar::handle:horizontal {"
                                            "min-width: %1px;"
                                            "}"
                                            "QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal {"
                                            "width: %1px;"
                                            "}").arg(sliderWidth));
verticalScrollBar->setStyleSheet(QString("QScrollBar::vertical {"
                                          "width: %1px;"
                                          "}"
                                          "QScrollBar::handle:vertical {"
                                          "min-height: %1px;"
                                          "}"
                                          "QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {"
                                          "height: %1px;"
                                          "}").arg(sliderWidth));

tableView->viewport()->update();