get clicked date current ?

[JonB]

@Duy-Khang
Depends on what widget class that picture is showing. You say nothing. Are we supposed to guess?

[mrjj]

Hi
You can use this signal
https://doc.qt.io/qt-5/qcalendarwidget.html#activated
or
void QCalendarWidget::clicked(const QDate &date)

[Duy Khang]

can you give me an example ?

[mrjj]

@Duy-Khang

Hi
Its just a connect. Here i used a lambda but you can ofc also connect to a normal slot.

  connect(ui->calendarWidget, &QCalendarWidget::clicked, this, [](const QDate & date) {
        qDebug() << "Data is" << date;
    });

[Duy Khang]

and help me show normal slot, i use nomal slot but it doesn't work

[Duy Khang]

QObject::connect(calendar,SIGNAL(selectionChanged()),this,SLOT(onSelectionChanged()));

void Student_Interactive_Interface::onSelectionChanged()
{
qDebug()<<calendar->selectedDate().toString("dd/MM/yyyy");
}

but,it doesn't work

[mrjj]

Hi
in .h

class MainWindow : public QMainWindow
{
    Q_OBJECT
...    
public slots:
    void DateSelected(const QDate & date);

or

public slots:
    void selectionChanged();

and in .cpp

void MainWindow::DateSelected(const QDate &date)
{
    qDebug() << "Date is" << date;
}
or
void MainWindow::selectionChanged()
{
    qDebug()<<ui->calendarWidget->selectedDate().toString("dd/MM/yyyy");
}

connect(ui->calendarWidget, &QCalendarWidget::clicked, this, &MainWindow::DateSelected );
or
connect(ui->calendarWidget, &QCalendarWidget::selectionChanged, this, &MainWindow::selectionChanged );

both work so make sure that calendar is infact the one you have on the screen and not another one.

[Duy Khang]

thank you very much.!

[Duy Khang]

@mrjj can you show me which document to learn about QObject::connect() and be master like you ? hihi

[mrjj]

@Duy-Khang

Hi
As you noticed, there are 2 versions. the old one using the SIGNAL and SLOT words, and the new one I did use here.

The new one is better than the old one as it will give a compiler error if something does not match. like missing parameters etc.

https://wiki.qt.io/New_Signal_Slot_Syntax

how it works, is explained here
https://doc.qt.io/qt-5/signalsandslots.html

[Duy Khang]

okay, thanks a lot !