qtforum.de

Code: Alles auswählen

#include "dialog.h"
#include <cmath>
#include <QCoreApplication>
#include <QFile>
#include <QString>
#include <QDebug>
#include <iostream>
#include <fstream>

Dialog::Dialog( int rows, int columns, QObject *parent ) : QAbstractTableModel( parent )
{
  m_rows = rows;
  m_columns = columns;
  QFile file("C:/Zahlen.dat");
 // if( !file.open(QIODevice::ReadOnly ))
 //  {   qDebug()<<"Zahlen.dat existiert nicht.";
 //  }
  //qDebug()<<"offfffen";
  int i=0, j=1;
  std::ifstream fin("C:/Zahlen.dat",std::ios::in);
  while(fin>>n)
  { a[i][j]=n;
      j++;
      if(j%20==0)
      {i++;
       j=1;
      }
  }
 // file.close();
  QFile fileB("C:/Bezeichnung.dat");
  if( !fileB.open( QIODevice::ReadOnly ))
   {   qDebug()<<"Datei Bezeichnung.dat existiert nicht.";
    //return false;
   }
  qDebug()<<"Bezeichnung.dat offfffen";
  QTextStream finB(&fileB);
  while(!finB.atEnd())
  {QString m1;
   finB >> m1;
      t1.append(m1);
    j++;
    Zeilenanzahl=j;
  }
  file.close();
 }
int Dialog::rowCount( const QModelIndex &parent ) const
{
  return m_rows;
}

int Dialog::columnCount( const QModelIndex &parent ) const
{
  return m_columns;
}

Qt::ItemFlags Dialog::flags( const QModelIndex &index ) const
{  
  return Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsEnabled ;
}

QVariant Dialog::data( const QModelIndex &index, int role ) const
{
  switch( role )
  {
  case Qt::DisplayRole:
      if(index.column()==0)
      {return (t1[index.row()]);
      }else
      {return (a[index.row()][index.column()]);
      }
  case Qt::ToolTipRole:
    return QString( "%1 x %2" ).arg( index.row()+1 ).arg( index.column()+1 );

  default:
    return QVariant();
  }
}
bool Dialog::setData(const QModelIndex & index, const QVariant & value, int role)
{
    if (role == Qt::EditRole)
    {if(index.column()==0)
        {t1[index.row()] = value.toString();            
        }else
        {a[index.row()][index.column()] = value.toFloat();        
        }
         emit dataChanged(index, index);
    }
              
        return true;

}
QVariant Dialog::headerData( int section, Qt::Orientation orientation, int role ) const
{
  if( role != Qt::DisplayRole )
    return QVariant();

  return QString::number( section );
  //return QString::number( section+1 );
}

Code: Alles auswählen

 if (role == Qt::EditRole)
    {if(index.column()==0)
        {t1[index.row()] = value.toString();            
        }else
        {a[index.row()][index.column()] = value.toFloat();        
        }
         emit dataChanged(index, index);
    }
        std::cout<<" a[0][1]="<<a[0][1]<<"  a[0][2]="<<a[0][2]<<std::endl;
        qDebug()<<"  t1[0]="<<t1[0];
        std:: ofstream ffout ("C:/Zahlen.dat",std::ios::out | std::ios::trunc);
        for(int i=0;i<Zeilenanzahl;i++)
        {for(int j=0;j<19;j++)
            {ffout<<" "<<a[i][j];
            }
        }        
        return true;