QTextEdit 富文本格式清除

清空富文本框内容并恢复初始格式

void RichTextEdit::clearText()
{
	ui.textEditMain->clear();
	ui.textEditMain->setFocus();
	//恢复初始格式
	QFont f;
	f.setFamily("微软雅黑");
	f.setPointSize(10);
	ui.textEditMain->selectAll();
	ui.textEditMain->setCurrentFont(f);
	ui.textEditMain->setTextColor(Qt::black);
	ui.textEditMain->setTextBackgroundColor(Qt::white);
}