QCalendarWidget::clicked

[ouekah]

Hi,

one can read the following in the documentation:

This signal is emitted when a mouse button is clicked. The date the mouse was clicked on is specified by date. The signal is only emitted when clicked on a valid date, e.g., dates are not outside the minimumDate() and maximumDate(). If the selection mode is NoSelection, this signal will not be emitted.

Is there a more flexible way to define what a valid date is ? For example if I would like the signal to be emitted only when a business week is selected, e.g., nothing happens when one clicks on Saturday or Sunday ?

[Lykurg]

You can subclass like that:

class MyCalendarWidget: public QCalendarWidget
{
    Q_OBJECT
  public:
    MyCalendarWidget(QWidget* parent) : QCalendarWidget(parent)
    {
      QObject::connect(this, SIGNAL(clicked(const QDate&)), this, SLOT(checkClicked(const QDate&)));
    }
 
  private Q_SLOTS:
    void checkClicked(const QDate& date) const
    {
      if (Qt::Saturday != date.dayOfWeek()
          && Qt::Sunday != date.dayOfWeek())
        Q_EMIT myClicked(date);
    }
 
  Q_SIGNALS:
    void myClicked(const QDate&);
};

class MyCalendarWidget: public QCalendarWidget
{
    Q_OBJECT
  public:
    MyCalendarWidget(QWidget* parent) : QCalendarWidget(parent)
    {
      QObject::connect(this, SIGNAL(clicked(const QDate&)), this, SLOT(checkClicked(const QDate&)));
    }

  private Q_SLOTS:
    void checkClicked(const QDate& date) const
    {
      if (Qt::Saturday != date.dayOfWeek()
          && Qt::Sunday != date.dayOfWeek())
        Q_EMIT myClicked(date);
    }

  Q_SIGNALS:
    void myClicked(const QDate&);
};

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[ouekah]

Thank you Lykurg . I created a subclass as you said except that I set the parent to 0 (I don't see which other value it might be...).

Then I replaced the default calendar of my QDateEdit with the new one as follows:

CalendarWidget  calendarWidget = new CalendarWidget;
myDateEdit->setCalendarWidget(calendarWidget);

CalendarWidget  calendarWidget = new CalendarWidget;
myDateEdit->setCalendarWidget(calendarWidget);

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But I obtain an error message at run time:

QDateTimeEdit::setCalendarWidget: calendarPopup is set to false

Do you see what am I doing wrong ?

[Lykurg]

But I obtain an error message at run time:

QDateTimeEdit::setCalendarWidget: calendarPopup is set to false

And what's the problem? It is only a warning and it says what is going on! just use

myDateEdit->setCalendarPopup(true);

myDateEdit->setCalendarPopup(true);

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to activate the popup functionality!

[ouekah]

This was done already ! That's why it looked weird to me... But actually in my code this instruction was executed AFTER QDateTimeEdit::setCalendarWidget. When the latter is executed if it finds out that QDateTimeEdit:: calendarPopup is set to false, it generates the so called warning...

Thanks for your help...

[ouekah]

Is there away to prevent some dates to be selected like with QCalendarWidget::setDateRange ?

I have a calendar in which some dates (chosen randomly) should not be selected and I cannot use setDateRange neither setMaximumDate neither setMinimumDate to achieve that. By subclassing QCalendarWidget and redefining what happens on a click, I prevent the user to send a forbidden date to the application. But it is still possible to select a forbidden date in my calendar even if nothing happens then.

With QCalendarWidget::setDateRange, the user cannot select a date outside the range. And this is exactly the effect that I would like to reproduce.

Does anyone know if there is a way to do that without creating a calendar widget from scracth ?

[ouekah]

I have no idea dude