QPushbutton(toggled) setenabled(false) set to actual state ...



  • As the title, I have a Qpushbutton->setcheckable(true) ... in some part of my code I need to have it Qpushbutton->setEnabled(false) ..... but if It is true/down state and set it setEnabled(false) at successive touch It go to Up/false state .... I need the state to be frozen until I return it to setEnabled(true)..

    is possible these ... how?

    regards
    Giorgio


  • Moderators

    hi gfxx,

    Could you show us the relevant code? especially the connects from the pushbutton.
    You might need to use disconnect

    Eddy



  • MainWindow::MainWindow(QWidget *parent) :
        QMainWindow(parent),
        ui(new Ui::MainWindow)
    {
        ui->setupUi(this);
    
    /**** stupid code****/
    
    connect(ui->zr, SIGNAL(toggled(bool)), this, SLOT(onemyvoid(bool)));
    
    
    }
    /**in my void (different from onemyvoid) on mainwindows*******/
        case 6:
            if(startZeroFalg){StartWaitingUpdate(StZero, StrZero); qDebug() << "zero gui 6: " << StrZero;}
            break;
        case 12:
            if(startZeroFalg){StartWaitingUpdate(ZeroTestint, StrZero); qDebug() << "zero gui 7: " << StrZero;}
            startZeroFalg = false;
            QTimer::singleShot(150, [=]{ emit EnableZeroGuiTh(false); });
            QTimer::singleShot(1000, [=]{  emit makineStat_R(k::st_is_home_6);  ui->zr->setEnabled(false);  });  /********* at these point the button is pressed, but after these if touch over the button It unpressed (because is the natural setenabled(false) state???****so I try to insert the bottom row at these moment******/
            ui->disconnect(); /******* after these the connection row is still valid if setenabled(true) again??******/
            break;
        default:
            break;
        }
    }
    

    regads
    giorgio



  • @gfxx no these not solve ... the button return to off state .... so at moment I create a trasparent label that enable end disable over the interesting button ... so is not possible phisically press the button .... but is not a good solution.

    regards
    giorgio


  • Lifetime Qt Champion

    Hi,

    Can you re-create that situation with a minimal code sample ?



  • @SGaist ```
    MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
    {
    ui->setupUi(this);

    /**** stupid code****/

    startZeroFalg = true;

    connect(ui->zr, SIGNAL(toggled(bool)), this, SLOT(onemyvoid(bool)));
    connect(this, SIGNAL(Signalminimalcase0(int, QString), this, SLOT(minimalcase(int, QString)));
    connect(this, SIGNAL(Signalminimalcase1(int, QString), this, SLOT(minimalcase(int, QString)));
    connect(this, SIGNAL(Signalminimalcase2(int, QString), this, SLOT(minimalcase(int, QString)));

    /***** end so on****/

    connect(this, SIGNAL(Signalminimalcase12(int, QString), this, SLOT(minimalcase(int)));

    }
    /in my void (different from onemyvoid) on mainwindows*****/
    void Mainwindows::minimalcase(int StZero, QString StrZero)
    {

    switch(StZero){

    case 0:
           if(startZeroFalg){ StartWaitingUpdate(StZero, StrZero); 
           firstvoid();
    

    /****** all other case /
    case 6:
    if(startZeroFalg){StartWaitingUpdate(StZero, StrZero); qDebug() << "zero gui 6: " << StrZero;}
    voidsix();
    break;
    case 12:
    if(startZeroFalg){StartWaitingUpdate(ZeroTestint, StrZero); qDebug() << "zero gui 7: " << StrZero;}
    startZeroFalg = false;
    QTimer::singleShot(150, [=]{ emit EnableZeroGuiTh(false); });
    QTimer::singleShot(1000, [=]{ emit makineStat_R(k::st_is_home_6); ui->zr->setEnabled(false); }); /
    **** at these point the button is pressed, but after these if touch over the button It unpressed (because is the natural setenabled(false) state???so I try to insert the bottom row at these moment**/
    ui->disconnect(); /******* after these the connection row is still valid if setenabled(true) again??******/
    break;
    default:
    break;
    }
    }

    void Mainwindows:onemyvoid(bool mybool)
    {
    if(mybool){
    /**** some stuff***/
    emit Siganlminimalcase0(0, customQString);
    }
    }

    
    
    So ui->zr call minimalcase for first time with value "0" and custom QString, case:0 -> call firstvoid() that similary of onemyvoid do some stuff plus emit Signalminimalcase1(1, customQString2)... case:1 call secondvoid() that similary to firstvoid do some stuff + emit signal and so on..... sixvoid do some stuff and emit Signalminimalcase12(12, customQString12).... no other complicate things .... so toglle ui->zr is equal to call a list of void in some sequence .... at the end of list I need ui->zr is setEnabled(false) .... and these happens ... but if press the button these change one time state without emit any type of signal, because is setEnable(false) ... this is right .... but the image of button change ... NOT NEED THESE ....
    
    so or I make sometighs wrong ... or I must sub-class pushbutton for have these result.
    
    regards
    giorgio

  • Lifetime Qt Champion

    That's not a minimal code sample. Nobody can re-create and test your problem with that.



  • @SGaist ha ok not understand these ...sorry .. last night not sleep at all ... Later if I can access that pc I'll do one more complete thing.

    regards
    giorgio


  • Lifetime Qt Champion

    On a side note, you should really take a bit more care with your comments. Having "stupid code" written all over the place doesn't inspire confidence nor motivates to read that code.



  • @SGaist said in QPushbutton(toggled) setenabled(false) set to actual state ...:

    On a side note, you should really take a bit more care with your comments. Having "stupid code" written all over the place doesn't inspire confidence nor motivates to read that code.

    Thanks A lot of your note, I have no confidence in these aspects of things ... what do I suggest to put? "Foo, foo" are the most suitable words?

    any how .... Controlling my code and try to reply the situation in one more simple ...

    #include "mainwindow.h"
    #include "ui_mainwindow.h"
    #include <QDebug>
    #include <QTime>
    #include <QTimer>
    #include <QTimerEvent>
    
    MainWindow::MainWindow(QWidget *parent) :
        QMainWindow(parent),
        ui(new Ui::MainWindow)
    {
        ui->setupUi(this);
    
        connect(ui->pushButton, SIGNAL(toggled(bool)), this, SLOT(presstoggle(bool)));
        connect(ui->pushButton_2, SIGNAL(toggled(bool)), this, SLOT(callenabled(bool)));
        connect(this, SIGNAL(callnumber(int)), this, SLOT(calldisable(int)));
    }
    
    MainWindow::~MainWindow()
    {
        delete ui;
    }
    
    
    void MainWindow::presstoggle(bool pt)
    {
        if(pt){
            QTimer::singleShot(200, [=]{ emit callnumber(10); });
        }
        else{
            QTimer::singleShot(200, [=]{ emit callnumber(0); });
        }
    }
    
    void MainWindow::callenabled(bool cl)
    {
        if(cl){
            ui->pushButton->setEnabled(true);
        }
    
    }
    
    void MainWindow::calldisable(int cd)
    {
        switch (cd) {
        case 0:
            qDebug() << "the pushbutton emit 0 value: " << cd;
            break;
        case 10:
            qDebug() << "the pushbutton emit 10 value: " << cd;
            QTimer::singleShot(1400, [=]{ ui->pushButton->setEnabled(false); });
            //ui->pushButton->setEnabled(false);
            break;
        default:
            qDebug() << "the pushbutton emit ?? value: " << cd;
            break;
        }
    }
    
    

    In these case all work fine ... So I think I've jumped a few steps that will be the real cause of the guileless behavior of the gui .... I have to check but maybe I make a call to something that does not end right away ... but only after the button has, unknowingly, Changed state .... better control ... if I can not find anything I will go to write it ... if I understand the cause I will write it the same .... thanks for the advice ... I have the whole way up before I become A decent programmer ... so you want to excuse my roughness.

    giorgio



  • @all ... long story short: mine error ... I' have not evaluate the signal came from a QThred ... these signal update the state of machinery and therefore also updates the status of the gui ... in these way:

    #include "mainwindow.h"
    #include "ui_mainwindow.h"
    #include <QDebug>
    #include <QTime>
    #include <QTimer>
    #include <QTimerEvent>
    #include <QThread>
    #include "Jo.h"
    
    MainWindow::MainWindow(QWidget *parent) :
        QMainWindow(parent),
        ui(new Ui::MainWindow)
    {
        ui->setupUi(this);
        
        mThrd = new Jo(this);
        connect(mThrd, SIGNAL(bool)), this, SLOT(vst(bool)), Qt::QueuedConnection);
        mThrd.start();
    
        connect(ui->pushButton, SIGNAL(toggled(bool)), this, SLOT(presstoggle(bool)));
        connect(ui->pushButton_2, SIGNAL(toggled(bool)), this, SLOT(callenabled(bool)));
        connect(this, SIGNAL(callnumber(int)), this, SLOT(calldisable(int)));
        
        
    }
    
    MainWindow::~MainWindow()
    {
        delete ui;
    }
    
    
    void MainWindow::presstoggle(bool pt)
    {
        if(pt){
            QTimer::singleShot(200, [=]{ emit callnumber(10); });
        }
        else{
            QTimer::singleShot(200, [=]{ emit callnumber(0); });
        }
    }
    
    void MainWindow::callenabled(bool cl)
    {
        if(cl){
            ui->pushButton->setEnabled(true);
        }
    
    }
    
    void MainWindow::calldisable(int cd)
    {
        switch (cd) {
        case 0:
            qDebug() << "the pushbutton emit 0 value: " << cd;
            break;
        case 10:
            qDebug() << "the pushbutton emit 10 value: " << cd;
            QTimer::singleShot(1400, [=]{ ui->pushButton->setEnabled(false); });
            //ui->pushButton->setEnabled(false);
            break;
        default:
            qDebug() << "the pushbutton emit ?? value: " << cd;
            break;
        }
    }
    
    void MainWindow::vst(bool state)
    {
        if(state){
            ui->pushButton->setChecked(true);
            ui->pushButton->setEnabled(false); /*** added code ****/
            qDebug() << "vst TRUE setcheched true";;
        }
        else{
            ui->pushButton->setChecked(false);
            ui->pushButton->setEnabled(true); /*** added code ****/
            qDebug() << "vst FALSE setcheched false";
        }
    
    
    }
    

    sorry not remember these part of my code, because I write it more than 2 mounth ago .... any how today I insert the row indicate on "/*** added code ***/ and all works fine.

    Probabily the previous signal ui->pushbutton->setEnabled(false) arrive in same time of state (void vst) so the button was Disable & setSheched so Disable signal was ignore for some reason until Qthread release it (in setchecked(false) mode).

    But more expert in signal & slot can learn me the more propabily causes of these ...But more experienced people than me can teach me a more adhering cause to the reality of the problem.

    giorgio


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