Solved Implement of signals
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In header file
signals: void findNext(const QString &text, Qt::CaseSensitivity cs);
in cpp file, i try to implement this signal like this
void FindDialog::findNext(const QString &text, Qt::CaseSensitivity cs) { }
But the compiler note me: error LNK1169 redefine symbol
So i delete the signal implement in the cpp file, the program compile succed.
Does it mean that i don't need to implement the signals?
if my understanding is wrong, how can i implement my own signals? -
@ozzy said:
signals:
void findNext(const QString &text, Qt::CaseSensitivity cs);This defines the signal.
You do not supply the body.To call it / use it.
emit findNext( sometext, CaseInsensitive ); // signal the signal :) using real vars as parameters.
Then somewhere else you
connect findNext to someone's slot and it does the real work.in case you didnt see:
http://doc.qt.io/qt-5.5/signalsandslots.html -
I have read the link before, i will carefully read it again.
thank you ~