How to refresh each Form on click of tabs

gogoi

hello friends

Actually i have created three tabs..on selecting each tab i have started a new activity..at the first load its fine..now when i make changes and again selected the particular tab..the changes that i have made is not shown..but when i exit the application and again run the app the changes i made in each form is shown..so why this happen..i have send my code..if anyone please check it..

code for first class file

@MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
QVBoxLayout *lay;

CalenderForm *pCal = new CalenderForm();
lay = new QVBoxLayout(ui->tab);
lay->addWidget(pCal);

HistoryForm *pHis = new HistoryForm();
lay = new QVBoxLayout(ui->tab_2);
lay->addWidget(pHis);
pHis->DisplayHistory();


ui->setupUi(this);
StatsForm *pStat = new StatsForm();
lay = new QVBoxLayout(ui->tab_3);
pStat->InitMemberVariable();
lay->addWidget(pStat);

}
@

code for history form

@HistoryForm::HistoryForm(QWidget *parent) :QMainWindow(parent),ui(new Ui::HistoryForm)
{
ui->setupUi(this);
CycleManager *pCycMan=new CycleManager();
QDate dtStartDate = pCycMan->GetStartDate();
QDate dtDefault = pCycMan->GetDefaultDate();
delete pCycMan;
if(dtStartDate==dtDefault)
ui->addNewBut->setEnabled(false);
connect(ui->addNewBut,SIGNAL(clicked()),this,SLOT(addPreviousCycledate()));
connect(ui->backBut,SIGNAL(clicked()),this,SLOT(closeHistoryFrm()));

}

void HistoryForm::DisplayHistory()
{

    CycleManager* pCycMan = new CycleManager();
    int iHistCount = pCycMan->GetHistoryCount();
    QString strDisplay;
    int i;
    bool bStarred = false;
    for (i=0; i<iHistCount; i++)
    {
            strDisplay=" ";
            QDate dtHist = pCycMan->GetHistoryDate(i);

            strDisplay=dtHist.toString();


            QLabel *pLabelHistory1 = new QLabel();

            pLabelHistory1->setText(strDisplay);


            ui->controlLayout->setAlignment(Qt::AlignTop);
            ui->controlLayout->addWidget(pLabelHistory1);


            strDisplay=" ";
             if (i == 0)
                    if (pCycMan->IsCycleStopped())
                            strDisplay = "Stopped";
                    else
                            strDisplay = "In progress";
           else
           {
                    QDate dtNextHist = pCycMan->GetHistoryDate(i-1);
                    long lDiff =dtHist.daysTo(dtNextHist);

                    strDisplay.append(QString::number(lDiff));
                    if (lDiff<CYCLE_MIN_LENGTH or lDiff>CYCLE_MAX_LENGTH)
                    {
                            strDisplay.append(" *");
                            bStarred = true;
                    }
            }

               QLabel *pLabelHistory2 = new QLabel();
               pLabelHistory2->setText(strDisplay);
               ui->controlLayoutSec->setAlignment(Qt::AlignTop);
               ui->controlLayoutSec->addWidget(pLabelHistory2);

    }


    strDisplay=" ";
    if (bStarred)
            strDisplay.append("* Shorter or longer than accepted");
    else
            strDisplay.append("");

    ui->secondLbl->setText(strDisplay);

}@

Eddy

Hi alfah,

you could connect the currentChanged signal of the QTabWidget to displayHistory(is this a slot? if not make it a slot)

gogoi

yeh display history is a slot..so how that can be done can you please explain that.

Eddy

in your MainWindow constructor do something like this :

@connect(ui->tabWidget, SIGNAL(currentChanged(int)),
pHis, SLOT(DisplayHistory() ));@