• 设置QLabel字符过度时，显示…
      1. #include <QFontMetrics>
      2. void STableWidgetItemDownload::setElidedTextToLabel(QLabel *lab, QString text)
      3. {
      4.    QFont font = lab->font();
      5.    QFontMetrics fm(font);
      6.    int pixelW = fm.horizontalAdvance(text);
      7.    if (pixelW > lab->width()) {
      8.        QString str = fm.elidedText(text, Qt::ElideRight, lab->width());
      9.        lab->setText(str);
      10.        return;
      11.    }
      12.    lab->setText(text);
      13. }
    • 在界面被拉伸时，字符也会跟着变化:
      1. protected:
      2. void resizeEvent(QResizeEvent *event);
    1. void STableWidgetItemDownload::resizeEvent(QResizeEvent *event)
    2.  {
    3.      QWidget::resizeEvent(event);
    5.      this->setElidedTextToLabel(ui->labelName, this->file->getPath());
    6.  }