移动光标
QTextCursor cursor = m_textEditIn->textCursor(); cursor.movePosition(QTextCursor::Right,QTextCursor::MoveAnchor); m_textEditIn->setTextCursor(cursor);
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删除前一个字符
QTextCursor cursor=ui->textEdit->textCursor(); if(cursor.hasSelection()) cursor.clearSelection(); cursor.deletePreviousChar(); ui->textEdit->setTextCursor(cursor);
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背景颜色
m_textEditIn->setStyleSheet("background:black");
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获取文字
QString strTextIn = ui.textEditIn->toPlainText();
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键值相关