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    QTextCursor textCursor = ui->textEdit->textCursor();
    QTextBlockFormat textBlockFormat;
    textBlockFormat.setLineHeight(40, QTextBlockFormat::FixedHeight);//设置固定行高
    textCursor.setBlockFormat(textBlockFormat);
    ui->textEdit->setTextCursor(textCursor);

设置QTextEdit的行间距

      QTextCursor textCursor = ui->textEdit->textCursor();
    QTextBlockFormat textBlockFormat;
    textBlockFormat.setBottomMargin(10);
    textCursor.setBlockFormat(textBlockFormat);
    ui->textEdit->setTextCursor(textCursor);

参考文章：https://www.yuque.com/docs/share/149369ec-0834-4087-bcbb-72510d4df9b3

设置QTextEdit的行高和行间距

标签：extc   block   www   sha   line   Fix   doc   https   edit   

原文地址：http://blog.51cto.com/4754569/2323961