4. Event happens when it shouldn't

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Event happens when it shouldn't


  • Hi,

    It is my first post here and I hope it gonna make you laugh.!

    Well, this is not that easy to explain. In my code, there is a simple connection with a QPushButton which is supposed to shut down the program.

    connect(quit, SIGNAL(clicked()), qApp, SLOT(quit()));

    For a test (cause another button doesnt work), I removed this line BUT it is still working. So basically there is not SLOT on this button but for the program there is.

    Obviously, I compiled again and again, clean, qmake, quit Qtcreator and tried again and again... AND it is still here.

    Do you have any idea what could it be.?

    Thanks in advance.

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  • Hi, Welcome to DevNet.
    Do you add QPushButton with QtDesigner or manualy in code?

    0

  • I did it manually

    here is the cpp concerned :

    #include "Win.h"
    #include "Result.h"

    Win::Win()
    {

    // ///////////////////////////////////////////////////////////////////
//SETTLEMENT OF THE MAIN WINDOW
// ///////////////////////////////////////////////////////////////////
box11 = new QSpinBox();
box11->setSuffix(" mm");
box12 = new QSpinBox();
box12->setSuffix(" mm");
box13 = new QSpinBox();
box13->setSuffix(" mm");
box14 = new QSpinBox();
box14->setSuffix(" mm");
box15 = new QSpinBox();
box15->setSuffix(" mm");
box16 = new QSpinBox();
box16->setSuffix(" mm");
box17 = new QSpinBox();
box17->setSuffix(" mm");
box18 = new QSpinBox();
box18->setSuffix(" mm");
box21 = new QSpinBox();
box21->setSuffix(" mm");
box22 = new QSpinBox();
box22->setSuffix(" mm");
box23 = new QSpinBox();
box23->setSuffix(" mm");
box24 = new QSpinBox();
box24->setSuffix(" mm");
box25 = new QSpinBox();
box25->setSuffix(" mm");
box26 = new QSpinBox();
box26->setSuffix(" mm");
box27 = new QSpinBox();
box27->setSuffix(" mm");
box28 = new QSpinBox();
box28->setSuffix(" mm");

//initialisation of requirement spinboxes 1 and 2
boxE2 = new QSpinBox();
boxE2->setPrefix("E2>   ");
boxE2->setRange(0, 400);
boxE2->setValue(100);
boxE2E1 = new QDoubleSpinBox();
boxE2E1->setPrefix("E2/E1<   ");
boxE2E1->setRange(0, 10);
boxE2E1->setValue(2.5);


//initialisation of pushbutton
b_quit = new QPushButton("quit");
calc = new QPushButton("calculate");

// ///////////////////////////////////////
//spinboxes 1 layout
// ///////////////////////////////////////
layout1 = new QFormLayout;
layout1->addRow("0 kPa", box11);
layout1->addRow("50 kPa", box12);
layout1->addRow("100 kPa", box13);
layout1->addRow("200 kPa", box14);
layout1->addRow("300 kPa", box15);
layout1->addRow("100 kPa", box16);
layout1->addRow("50 kPa", box17);
layout1->addRow("0 kPa", box18);

//spinboxes 2 layout
layout2 = new QFormLayout;
layout2->addRow("0 kPa", box21);
layout2->addRow("50 kPa", box22);
layout2->addRow("100 kPa", box23);
layout2->addRow("200 kPa", box24);
layout2->addRow("300 kPa", box25);
layout2->addRow("100 kPa", box26);
layout2->addRow("50 kPa", box27);
layout2->addRow("0 kPa", box28);

biglayout1 = new QHBoxLayout;
biglayout1->addLayout(layout1);
biglayout1->addLayout(layout2);
groupmeasures = new QGroupBox("Measurements");
groupmeasures->setLayout(biglayout1);

//requirement spinboxes 1 and 2 layout
layout3 = new QHBoxLayout;
layout3->addWidget(boxE2);
layout3->addWidget(boxE2E1);
grouprequirement = new QGroupBox("Requirement");
grouprequirement->setLayout(layout3);

//pushbutton layout
layout4 = new QHBoxLayout;
layout4->addWidget(calc);
layout4->addWidget(b_quit);

layoutgrid = new QGridLayout;
layoutgrid->addWidget(groupmeasures,0,0,1,2);
layoutgrid->addWidget(grouprequirement,1,0,1,2);
layoutgrid->addLayout(layout4,2,0,1,2);

// ///////////////////////////////////////////////////////////////////
// MAIN WINDOW SETTLED
// ///////////////////////////////////////////////////////////////////

// pushbuttons connection
connect(calc, SIGNAL(clicked()), qApp, SLOT(quit()));

    }

    void Win::ouvrirDialogue()
    {
    // Vous insérerez ici le code d'ouverture des boîtes de dialogue
    QMessageBox::information(this, "Titre de la fenêtre", "Bonjour et bienvenueà tous les Zéros !");

    }

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  • Well, i dont know how to post the code...!

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  • @#include "Win.h"
    #include "Result.h"

    Win::Win()
    {

    // ///////////////////////////////////////////////////////////////////
//SETTLEMENT OF THE MAIN WINDOW
// ///////////////////////////////////////////////////////////////////
box11 = new QSpinBox();
box11->setSuffix(" mm");
box12 = new QSpinBox();
box12->setSuffix(" mm");
box13 = new QSpinBox();
box13->setSuffix(" mm");
box14 = new QSpinBox();
box14->setSuffix(" mm");
box15 = new QSpinBox();
box15->setSuffix(" mm");
box16 = new QSpinBox();
box16->setSuffix(" mm");
box17 = new QSpinBox();
box17->setSuffix(" mm");
box18 = new QSpinBox();
box18->setSuffix(" mm");
box21 = new QSpinBox();
box21->setSuffix(" mm");
box22 = new QSpinBox();
box22->setSuffix(" mm");
box23 = new QSpinBox();
box23->setSuffix(" mm");
box24 = new QSpinBox();
box24->setSuffix(" mm");
box25 = new QSpinBox();
box25->setSuffix(" mm");
box26 = new QSpinBox();
box26->setSuffix(" mm");
box27 = new QSpinBox();
box27->setSuffix(" mm");
box28 = new QSpinBox();
box28->setSuffix(" mm");

//initialisation of requirement spinboxes 1 and 2
boxE2 = new QSpinBox();
boxE2->setPrefix("E2>   ");
boxE2->setRange(0, 400);
boxE2->setValue(100);
boxE2E1 = new QDoubleSpinBox();
boxE2E1->setPrefix("E2/E1<   ");
boxE2E1->setRange(0, 10);
boxE2E1->setValue(2.5);


//initialisation of pushbutton
b_quit = new QPushButton("quit");
calc = new QPushButton("calculate");

// ///////////////////////////////////////
//spinboxes 1 layout
// ///////////////////////////////////////
layout1 = new QFormLayout;
layout1->addRow("0 kPa", box11);
layout1->addRow("50 kPa", box12);
layout1->addRow("100 kPa", box13);
layout1->addRow("200 kPa", box14);
layout1->addRow("300 kPa", box15);
layout1->addRow("100 kPa", box16);
layout1->addRow("50 kPa", box17);
layout1->addRow("0 kPa", box18);

//spinboxes 2 layout
layout2 = new QFormLayout;
layout2->addRow("0 kPa", box21);
layout2->addRow("50 kPa", box22);
layout2->addRow("100 kPa", box23);
layout2->addRow("200 kPa", box24);
layout2->addRow("300 kPa", box25);
layout2->addRow("100 kPa", box26);
layout2->addRow("50 kPa", box27);
layout2->addRow("0 kPa", box28);

biglayout1 = new QHBoxLayout;
biglayout1->addLayout(layout1);
biglayout1->addLayout(layout2);
groupmeasures = new QGroupBox("Measurements");
groupmeasures->setLayout(biglayout1);

//requirement spinboxes 1 and 2 layout
layout3 = new QHBoxLayout;
layout3->addWidget(boxE2);
layout3->addWidget(boxE2E1);
grouprequirement = new QGroupBox("Requirement");
grouprequirement->setLayout(layout3);

//pushbutton layout
layout4 = new QHBoxLayout;
layout4->addWidget(calc);
layout4->addWidget(b_quit);

layoutgrid = new QGridLayout;
layoutgrid->addWidget(groupmeasures,0,0,1,2);
layoutgrid->addWidget(grouprequirement,1,0,1,2);
layoutgrid->addLayout(layout4,2,0,1,2);

// ///////////////////////////////////////////////////////////////////
// MAIN WINDOW SETTLED
// ///////////////////////////////////////////////////////////////////

// pushbuttons connection
connect(calc, SIGNAL(clicked()), qApp, SLOT(quit()));

    }

    void Win::ouvrirDialogue()
    {
    // Vous insérerez ici le code d'ouverture des boîtes de dialogue
    QMessageBox::information(this, "Titre de la fenêtre", "Bonjour et bienvenueà tous les Zéros !");

    }
    @

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  • And if you click on b_quit app closes?

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  • yeah exactly. Whereas there is no connection anymore.
    Moreover, I just checked if the compilation is good. There is problem...!

    It looks like my program corresponds to my former code. Weird tho

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  • Anybody has an idea.?

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  • Only thing that comes to mind, if clean - >qmake didn't help then try delete all build files manually and qmake - >Rebuild All.

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