[SOLVED] Error to declare signal
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Hello All!
I am trying to declare a signal as the code below shows:
@
//bancodados.h
#ifndef BANCODADOS_H
#define BANCODADOS_H#include <QObject>
class bancoDados : public QObject
{
Q_OBJECTpublic:
explicit bancoDados(QObject *parent = 0);signals:
void conectar();public slots:
};
@
@
//bancodados.cpp
#include "bancodados.h"#include <QSqlDatabase>
bancoDados::bancoDados(QObject *parent) :
QObject(parent)
{}
void bancoDados::conectar()
{
bool retorno = true;emit retorno;
}
@Well, when I run this code it show the error:
@:-1: error: 1 duplicate symbol for architecture x86_64@But, if I change "void conectar();" from signals to public, it runs, but I need to it stays as a signal
Can anyone help me?
Thanks a lot.
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Hi,
signals don't have an implementation and you can't emit a variable.
See the "Signals And Slots":http://qt-project.org/doc/qt-5/signalsandslots.html documention for more information