Signals and slots didn't emitted

mimamrafi

Hai everyone, I want to ask something. My code didn't emit to slot, this is my code

// maingui.h
public slots :
    void getLimit();

// maingui.cpp
#include "setlimitvolt.h"
...
MainGUI::MainGUI(QWidget *parent, int type) :
    QWidget(parent),
    ui(new Ui::MainGUI)
{
    this->limitType = type;
    ui->setupUi(this);
    SetLimitVolt *LimitV = new SetLimitVolt();
    connect(LimitV,SIGNAL(limiting()), this, SLOT(getLimit()));
}

void MainGUI::getLimit(){
    qDebug() << "test";
}

and I want to emit my code from other class

// setlimitvolt.h
signals :
    void limiting();

// setlimitvolt.cpp
void SetLimitVolt::on_lineEdit_editingFinished()
{
    emit limiting();
}

Is there any wrong code ?

jsulm

@mimamrafi Please use new Qt5 connect syntax to make sure the connect succeeded: https://doc.qt.io/qt-5/signalsandslots.html

Next: you define LimitV in MainGUI and do NOT show it. My guess is that you have another LimitV member in your MainGUI class which you actually want to use. Please show whole MainGUI header file.

mimamrafi

@jsulm yes you are right , after a few days, I found my code

SetLimitVolt *LimitV = new SetLimitVolt();

in another void. sorry for this newbie's fault