QTextEdit 和QPlainTextEdit本身没有提供设置插入字体的颜色的API,可以自定义一个setInsertTextColor(const QColor & c)来实现:
void XXXX::setInsertTextColor(QColor col,BackOrFore wground){ QTextCharFormat fmt; fmt.setForeground(col); QTextCursor cursor = textCursor(); cursor.mergeCharFormat(fmt); mergeCurrentCharFormat(fmt);调用QTextEdit或者QPlianTextEdit的api;}