Question

如何在另一个类中声明lineEdit的信号和槽？ LineEdit类中声明了Peakdetechtion，我想在peaksettingform中制作信号和广告位，那我该怎么办？

Answer 1

QLineEdit必须可以从外部访问（公共或获取），或者您必须转发您感兴趣的信号。

可访问版本（不完整且非常脏）

http://selenium-release.storage.googleapis.com/3.0/selenium-dotnet-3.0.0.zip

信号转发

class Peakdetechtion { // horrible name
public:
  QLineEdit* getLineEdit() { return m_lineEdit; } // don't do it

private:
  QLineEdit* m_lineEdit;
};

class Peaksettingform : public QObject { //horrible name
  Q_OBJECT
public:
  Peaksettingform(Peakdetechtion *p, QObject *parent = 0)
  : QObject(parent) {
    // you can do this from outside and replace 'this' with a pointer to a Peaksettingform object 
    connect(p->getLineEdit(), SIGNAL(textChanged(const QString &)), this, SLOT(handleText(const QString &))); 
}

public slots:
  void handleText(const QString &);
};

如何在不同的类中编写lineEdit的connect语句

1 个答案: