Want the currentdate in QCalendarWidget to be underlined

[ranjit.kadam]

hello friends,I want the current date in QCalendar widget to be underlined always ,so how can we do it,because in default calendar widget,it highlights it for the first time but when we change the selection ,the current date disappears,so i want it to be identified by some marker even if we selected a different date in QCalendar widget.


regards
ranjit

[high_flyer]

Show the code you tried so far.

[mcosta]

Try with QCalendarWidget::setDateTextFormat.

For example

cw->setDateTextFormat(QDate::currentDate, textFormat);

cw->setDateTextFormat(QDate::currentDate, textFormat);

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[ranjit.kadam]

thanks mcosta,i got it,one morething i need to ask you,can i add a background image to cells of calendarwidget,please help me,i came to know that we have tp re-implement the paintcell method,but how to re-implement it i am not getting

[mcosta]

You have to inherit a class from QCalendarWidget and reimplement the method QCalendarWidget::paintCell.
For example

void MyCalendarWidget::paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
{
    painter->save(); // save standard settings
 
    painter->setBrush (this->myBrush); // myBrush is a class member that store your background image
 
    QCalendarWidget::paintCell (painter, rect, date);
 
    painter->restore(); // restore previous settings
}

void MyCalendarWidget::paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
{
    painter->save(); // save standard settings

    painter->setBrush (this->myBrush); // myBrush is a class member that store your background image

    QCalendarWidget::paintCell (painter, rect, date);

    painter->restore(); // restore previous settings
}

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[ranjit.kadam]

thanks i will work on it..

---

Added after 17 minutes:

Hey mcosta,I have taken a Qcalendarwidget on a form,and in the constructor i have written this code,so whether its correct,please help me out

QPainter *p=new QPainter();
   p->begin()
    QRect r1(100,200,11,16);
   QRect r2(100,200,11,16);
    QImage image("C:/speedback.png");
    p->drawImage(r1,image,r2);
   ui->calendarWidget->paintCell(p ,r1,QDate::currentDate());

QPainter *p=new QPainter();
   p->begin()
    QRect r1(100,200,11,16);
   QRect r2(100,200,11,16);
    QImage image("C:/speedback.png");
    p->drawImage(r1,image,r2);
   ui->calendarWidget->paintCell(p ,r1,QDate::currentDate());

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regards
ranjit

[ranjit.kadam]

hello friends please explain me out

[mcosta]

Are you sure that your code has not compilation errors?

QCalendarWidget::paintCell is protected, so you can't call it.

[ranjit.kadam]

yes mcosta,i got that error,so i made it public and it got executed ,but i didnt see that image , how to solve this issue? and whether i coded it correctly or something is missing,


thanks
ranjit

[mcosta]

yes mcosta,i got that error,so i made it public and it got executed

What means???
You cannot modify the QCalendarWidget code.
QCalendarWidget::paintCell is automatically called from QCalendarWidget::paintEvent, so you need to reimplement it.

Try with the code I suggested before

[ranjit.kadam]

ok i will try and get back to you

[mcosta]

Sorry,

probably in my code calling QCalendarWidget:aintCell doesn't work.

You have to draw the cell by hands

For Example

void MyCalendarWidget::paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
{
    painter->save ();
 
    painter->fillRect (rect, Qt::cyan);
    painter->drawText (rect, Qt::AlignCenter | Qt::AlignHCenter,
                       QString::number (date.day ()));
 
    // More painting
 
    painter->restore ();
}

void MyCalendarWidget::paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
{
    painter->save ();

    painter->fillRect (rect, Qt::cyan);
    painter->drawText (rect, Qt::AlignCenter | Qt::AlignHCenter,
                       QString::number (date.day ()));

    // More painting

    painter->restore ();
}

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[ranjit.kadam]

void Dialog::paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
{
    painter->save(); // save standard settings
 
    painter->setBrush (this->myBrush); // myBrush is a class member that store your background image
 
    QRectF target(10.0, 20.0, 80.0, 60.0);
     QRectF source(10.0, 20.0, 70.0, 40.0);
     QImage image("C:/speedback.png");
      QRectF rect(100.0, 200.0, 80.0, 60.0);
 
     painter->drawImage(target, image, source);
 
    ui->calendarWidget->paintCell (painter, rect, date);
 
    painter->restore(); // restore previous settings
}

void Dialog::paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
{
    painter->save(); // save standard settings

    painter->setBrush (this->myBrush); // myBrush is a class member that store your background image

    QRectF target(10.0, 20.0, 80.0, 60.0);
     QRectF source(10.0, 20.0, 70.0, 40.0);
     QImage image("C:/speedback.png");
      QRectF rect(100.0, 200.0, 80.0, 60.0);

     painter->drawImage(target, image, source);

    ui->calendarWidget->paintCell (painter, rect, date);

    painter->restore(); // restore previous settings
}

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i tried your code,but i am getting the following errors.

QCalendarwidget :aintcell is protected..
QRect rect shadows a parameter.

[high_flyer]

Please use code tags when you post code!

[mcosta]

You have to inherit a class from QCalendarWidget and reimplement the method QCalendarWidget:: paintCell.

Do you understand what I mean for "inherit a class from QCalendarWidget" ??
If you don't, you have to study about C++ inheritance.

[ranjit.kadam]

yes mcosta,but i am getting confused because i have not coded for QCalendarwidget,i have directly taken it through designer

[mcosta]

ok,

create your class inherited from QCalendarWidget and then use Widget Promoting in Designer

[ranjit.kadam]

//widget.h

#ifndef WIDGET_H
#define WIDGET_H
 
#include <QWidget>
#include<QtGui>
namespace Ui {
    class Widget;
}
 
class Widget : public QWidget,QCalendarWidget
{
    Q_OBJECT
 
public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();
 
private:
    Ui::Widget *ui;
 
private slots:
    void paintEvent(QPaintEvent *);
};
 
#endif // WIDGET_H

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include<QtGui>
namespace Ui {
    class Widget;
}

class Widget : public QWidget,QCalendarWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();

private:
    Ui::Widget *ui;

private slots:
    void paintEvent(QPaintEvent *);
};

#endif // WIDGET_H

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widget.cpp

#include "widget.h"
#include "ui_widget.h"
#include<QPainter>
#include<QFont>
Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
}
 
Widget::~Widget()
{
    delete ui;
}
void Widget::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    painter.setPen(Qt::red);
     painter.setBrush(Qt::green);
    painter.setFont(QFont("Ariel",30));
    painter.drawText(rect(),Qt::AlignCenter,"Qt");
    QRectF rect(100.0, 200.0, 80.0, 60.0);
     int startAngle = 50 * 16;
     int spanAngle = 120 * 16;
 
 
     painter.drawChord(rect, startAngle, spanAngle);
     painter.fillRect(10,200,80,60,Qt::green);
     painter.drawEllipse(rect);
 
     QRectF target(10.0, 20.0, 80.0, 60.0);
      QRectF source(10.0, 20.0, 70.0, 40.0);
      QImage image("C:/speedback.png");
 
 
      painter.drawImage(target, image, source);
 
 
     painter.end();
 
 }
 
     void Widget::paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
     {
         painter->save(); // save standard settings
 
        //painter->setBrush (this->myBrush); // myBrush is a class member that store your background image
 
            painter->setBrush(Qt::VerPattern);
           QRect rect(100, 200, 80, 60);
            painter->drawEllipse(rect);
 
            ui->calendarWidget->paintCell (painter, rect, date);
 
            painter->restore(); // restore previous settings
 
     }

#include "widget.h"
#include "ui_widget.h"
#include<QPainter>
#include<QFont>
Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
}

Widget::~Widget()
{
    delete ui;
}
void Widget::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    painter.setPen(Qt::red);
     painter.setBrush(Qt::green);
    painter.setFont(QFont("Ariel",30));
    painter.drawText(rect(),Qt::AlignCenter,"Qt");
    QRectF rect(100.0, 200.0, 80.0, 60.0);
     int startAngle = 50 * 16;
     int spanAngle = 120 * 16;


     painter.drawChord(rect, startAngle, spanAngle);
     painter.fillRect(10,200,80,60,Qt::green);
     painter.drawEllipse(rect);

     QRectF target(10.0, 20.0, 80.0, 60.0);
      QRectF source(10.0, 20.0, 70.0, 40.0);
      QImage image("C:/speedback.png");


      painter.drawImage(target, image, source);


     painter.end();

 }

     void Widget::paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
     {
         painter->save(); // save standard settings

        //painter->setBrush (this->myBrush); // myBrush is a class member that store your background image

            painter->setBrush(Qt::VerPattern);
           QRect rect(100, 200, 80, 60);
            painter->drawEllipse(rect);

            ui->calendarWidget->paintCell (painter, rect, date);

            painter->restore(); // restore previous settings

     }

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can i do in this way

or this way http://doc.trolltech.com/4.7.1/uitoo...heritance.html

[high_flyer]

can i do in this way

First indication will be if the code compiles.
So try to compile it first.

[ranjit.kadam]

no hiflyer,i am getting error,
error:
request for member show ambiguous
candidates are void QWidget::show();