Rquest for member show() is ambiguous

[Anshuman]

Actually i inherit Qdialog and QCalenderWidget class..now when i build my app the following error ocurrs...can anyone suggest me why is occur..

Error r....

Rquest for member show() is ambiguous //show in main .cpp

with reagrds
Anshuman

[mcosta]

can post your code?

[Anshuman]

ok this is my code..

class PainterApp : public QDialog,public QCalendarWidget
{
    Q_OBJECT
 
public:
    explicit PainterApp(QWidget *parent = 0);
    ~PainterApp();
 
private:
    Ui::PainterApp *ui;
private slots:
    void paintEvent(QPaintEvent *);
};

class PainterApp : public QDialog,public QCalendarWidget
{
    Q_OBJECT

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

private:
    Ui::PainterApp *ui;
private slots:
    void paintEvent(QPaintEvent *);
};

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void PainterApp::paintCell(QPainter * painter, const QRect & rect, const QDate & date ) const{
 
    QRectF target(30.0, 40.0, 80.0, 60.0);
    QRectF source(30.0, 40.0, 70.0, 40.0);
    QImage image("C:/QTWork/back-icon.png");
 
 
    painter.drawImage(target, image, source);
ui->calendarWidget->paintCell(painter,rect,date.currentDate());
 
}

void PainterApp::paintCell(QPainter * painter, const QRect & rect, const QDate & date ) const{

    QRectF target(30.0, 40.0, 80.0, 60.0);
    QRectF source(30.0, 40.0, 70.0, 40.0);
    QImage image("C:/QTWork/back-icon.png");


    painter.drawImage(target, image, source);
ui->calendarWidget->paintCell(painter,rect,date.currentDate());
   
}

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[Berryblue031]

It's because of the multiple inheritance. You should avoid multiple inheritance except in the case of pure virtual classes.(interfaces)

Both QDialog and QCalendarWidget have a show function so when PainterApp::show is called it doesn't know whether to call the show from QDialog or from QCalendarWidget.

Redesign your class to only extend QDialog and add a QCalendarWidget to it's ui.

[Anshuman]

ok I am sending my code u please check it..now no error signifies but nothing display in the cell..

namespace Ui {
    class PainterApp;
}
class MyCalendarWidget : public QCalendarWidget
{
private:
    Ui::PainterApp *ui;
protected:
    virtual void paintCell(QPainter* painter, const QRectF& rect, const QDate& date);
 
};
class PainterApp : public QDialog
{
    Q_OBJECT
 
public:
    explicit PainterApp(QWidget *parent = 0);
    ~PainterApp();
 
private:
    Ui::PainterApp *ui;
private slots:
 
};

namespace Ui {
    class PainterApp;
}
class MyCalendarWidget : public QCalendarWidget
{
private:
    Ui::PainterApp *ui;
protected:
    virtual void paintCell(QPainter* painter, const QRectF& rect, const QDate& date);
 
};
class PainterApp : public QDialog
{
    Q_OBJECT
 
public:
    explicit PainterApp(QWidget *parent = 0);
    ~PainterApp();
 
private:
    Ui::PainterApp *ui;
private slots:
 
};

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#include "painterapp.h"
#include "ui_painterapp.h"
 
PainterApp::PainterApp(QWidget *parent) :
        QDialog(parent),
    ui(new Ui::PainterApp)
{
     ui->setupUi(this);
 
}
void MyCalendarWidget::paintCell(QPainter* painter, const QRectF& rect, const QDate& date)
{
 
    rect(30.0, 40.0, 80.0, 60.0);
    QImage image("C:/QTWork/back-icon.png");
 
 
    painter->drawImage(rect, image, rect);
    ui->calendarWidget->paintCell(painter,rect,date.currentDate());
}

#include "painterapp.h"
#include "ui_painterapp.h"
 
PainterApp::PainterApp(QWidget *parent) :
        QDialog(parent),
    ui(new Ui::PainterApp)
{
     ui->setupUi(this);
 
}
void MyCalendarWidget::paintCell(QPainter* painter, const QRectF& rect, const QDate& date)
{
 
    rect(30.0, 40.0, 80.0, 60.0);
    QImage image("C:/QTWork/back-icon.png");
  
  
    painter->drawImage(rect, image, rect);
    ui->calendarWidget->paintCell(painter,rect,date.currentDate());
}

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regards
Anshuman