Good evening boys,
happy holiday! I'm using a QDataWidgetMapper object to map any control of a form to my db table, this is the code:
Qt Code: 
  1. mapper = new QDataWidgetMapper(this);
  2.     mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
  3.     mapper->setModel(mdlLav);
  4.     mapper->setItemDelegate(new QSqlRelationalDelegate(this));
  5.     mapper->addMapping(ui->lblTipoStamp,mdlLav->fieldIndex("TipoStamp"));
  6.     mapper->addMapping(ui->idOrdine, mdlLav->fieldIndex("CodOrd"));
  7.     mapper->addMapping(ui->spCapi,mdlLav->fieldIndex("QtaCapi"));
  8.     mapper->addMapping(ui->dateTimeEdit, mdlLav->fieldIndex("Data"));
  9.     mapper->addMapping(ui->spMetri,mdlLav->fieldIndex("Metri"));
  10.     mapper->addMapping(ui->spGrandi, mdlLav->fieldIndex("QtaGrandiO"));
  11.     mapper->addMapping(ui->spPiccole, mdlLav->fieldIndex("QtaPiccoleO"));
  12.     mapper->addMapping(ui->txtIDBolla,mdlLav->fieldIndex("IDBolla"));
  13.     mapper->addMapping(ui->cboTipoSpec,typeIndex);
  14.     mapper->addMapping(ui->cboColore,typeIndex2);
  15.     mapper->addMapping(ui->cboSpessore,typeIndex3);
  16.  
  17.     this->idOrd=idOrd;
  18.  
  19.     if (idLav==-1){
  20.         mdlLav->insertRow(mdlLav->rowCount());
  21.         ui->lblTipoStamp->setText("#-@-*");
  22.         mapper->toLast();
  23.         Pulisci();
  24.     }
  25.     else{
  26.         for (int i=0; i<mdlLav->rowCount(); i++){
  27.             int IdRec= mdlLav->record(i).field("IDLav").value().toInt();
  28.             if (IdRec==idLav){
  29.                 mapper->setCurrentIndex(i);
  30.                 break;
  31.             }
  32.         }
  33.     }
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The problem is, the new insert of an element work OK, the Edit of an existing element is KO! I check all the field of db and all data are ok, I think it could be near the combobox indexing.

I use connect to check the value selected in combobox to one table, with this function:

Qt Code: 
  1. void rtcLavoraOrd::CheckTipoStamp(){
  2.  
  3.     ui->cmdConferma->setEnabled(false);
  4.     if (!ui->cboColore->currentText().isEmpty() && !ui->cboSpessore->currentText().isEmpty() && !ui->cboTipoSpec->currentText().isEmpty()){
  5.         //Verifica della presenza della combinazione scelta
  6.         QSqlQuery qry;
  7.         qry.exec("SELECT ID FROM TIPISTAMP");
  8.  
  9.         bool found=false;
  10.  
  11.         while(qry.next()){
  12.             if (qry.value(0).toString()==ui->lblTipoStamp->text()){
  13.                 found=true;
  14.                 break;
  15.             }
  16.         }
  17.  
  18.         if (!found){
  19.  
  20.             ui->fraAlarm->setVisible(true);
  21.  
  22.             ui->txtMaxGrandi->setText("(disp.: ###)");
  23.             ui->txtMaxPiccole->setText("(disp.: ###)");
  24.  
  25.  
  26.         }
  27.         else {
  28.             QString qry2,colore,tipo,spess;
  29.             colore=ui->cboColore->currentText();
  30.             tipo=ui->cboTipoSpec->currentText();
  31.             spess=ui->cboSpessore->currentText();
  32.  
  33.             qry2.clear();
  34.  
  35.             qry2=QString("%1%2").arg(totStampateQuery).arg(QString(" WHERE STAMP.Colore='%1' AND STAMP.SPESSORE=%2 AND STAMP.TIPO='%3'").arg(colore).arg(spess).arg(tipo));
  36.  
  37.             int maxG=-1,maxP=-1;
  38.  
  39.  
  40.             query.clear();
  41.             query.exec(qry2);
  42.  
  43.             while (query.next()){
  44.  
  45.                 maxG = query.value(3).toInt();
  46.                 maxP = query.value(4).toInt();
  47.             }
  48.  
  49.             //Calcolo dei valori di grandi e piccole
  50.  
  51.  
  52.             ui->txtMaxGrandi->setText(QString("(disp.: %1)").arg(maxG));
  53.             ui->txtMaxPiccole->setText(QString("(disp.: %1)").arg(maxP));
  54.  
  55.             ui->cmdConferma->setEnabled(true);
  56.  
  57.         }
  58.     }
  59. }
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It disable the Save button, but not change the mapper.

Any idea?

Thanks for your time.

Michele