在QTextEdit中对齐文本？ [英] Aligning text in QTextEdit?

问题描述

如果我有一个QTextEdit框，如何以不同的方式在框中对齐不同的文本？例如，我想使一个句子左对齐，而框中的下一个句子右对齐。这可能吗？如果没有，我如何在Qt中实现这种效果？

If I have a QTextEdit box, how can I align different pieces of text within the box in different ways? For example, I would like to have one sentence be aligned-left, and the next sentence in the box be aligned-right. Is this possible? If not, how might I achieve this effect in Qt?

推荐答案

如文档所述：

void QTextEdit::setAlignment(Qt::Alignment a) [slot]

将当前段落的对齐方式设置为 a 。有效的对齐方式是 Qt :: AlignLeft ， Qt :: AlignRight ， Qt :: AlignJustify 和 Qt :: AlignCenter （水平居中）。

Sets the alignment of the current paragraph to a. Valid alignments are Qt::AlignLeft, Qt::AlignRight, Qt::AlignJustify and Qt::AlignCenter (which centers horizontally).

链接： http://qt-project.org/doc/qt-5/qtextedit.html# setAlignment

因此，如您所见，您应该为每个段落提供一些对齐方式。

So as you can see you should provide some alignment to each paragraph.

小示例：

QTextCursor cursor = ui->textEdit->textCursor();
QTextBlockFormat textBlockFormat = cursor.blockFormat();
textBlockFormat.setAlignment(Qt::AlignRight);//or another alignment
cursor.mergeBlockFormat(textBlockFormat);
ui->textEdit->setTextCursor(cursor);

我在计算机上得到的结果是什么？

Which result I get on my computer?

您的问题：

ui->textEdit->clear();
ui->textEdit->append("example");
ui->textEdit->append("example");
QTextCursor cursor = ui->textEdit->textCursor();
QTextBlockFormat textBlockFormat = cursor.blockFormat();
textBlockFormat.setAlignment(Qt::AlignRight);
cursor.mergeBlockFormat(textBlockFormat);
ui->textEdit->setTextCursor(cursor);

ui->textEdit->append("example");

cursor = ui->textEdit->textCursor();
textBlockFormat = cursor.blockFormat();
textBlockFormat.setAlignment(Qt::AlignCenter);
cursor.mergeBlockFormat(textBlockFormat);
ui->textEdit->setTextCursor(cursor);

结果：

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