QLineEdit中如何实现敲回车时发出一个SIGNAL

[liyuanhe211]

如何实现焦点位于QLineEdit中时，敲回车时发出一个SIGNAL

[乔巴好萌]

QLineEdit自带一个signal，可以响应回车 void QLineEdit::returnPressed () [signal] This signal is emitted when the Return or Enter key is pressed. Note that if there is a validator() or inputMask() set on the line edit, the returnPressed() signal will only be emitted if the input follows the inputMask() and the validator() returns QValidator::Acceptable.