Fix a number of crashes

kmymoney2/converter/mymoneyqifprofile.cpp

@@ -769,7 +769,7 @@ TQString MyMoneyQifProfile::inputDateFormat(void) const
   possibleDateFormats(list);
   if(list.count() == 1)
     return list.first();
-  return TQString();
+  return TQString::null;
 }
 
 void MyMoneyQifProfile::possibleDateFormats(TQStringList& list) const

kmymoney2/converter/mymoneyqifreader.cpp

@@ -714,7 +714,7 @@ const TQString MyMoneyQifReader::extractLine(const TQChar id, int cnt)
     }
   }
   m_extractedLine = -1;
-  return TQString();
+  return TQString::null;
 }
 
 void MyMoneyQifReader::extractSplits(TQValueList<qSplit>& listqSplits) const

kmymoney2/dialogs/kcategoryreassigndlg.cpp

@@ -53,7 +53,7 @@ KCategoryReassignDlg::~KCategoryReassignDlg()
 TQString KCategoryReassignDlg::show(const MyMoneyAccount& category)
 {
   if (category.id().isEmpty())
-   return TQString(); // no payee available? nothing can be selected...
+   return TQString::null; // no payee available? nothing can be selected...
 
   AccountSet set;
   set.addAccountGroup(MyMoneyAccount::Income);
@@ -79,12 +79,12 @@ TQString KCategoryReassignDlg::show(const MyMoneyAccount& category)
   // if there is no category for reassignment left, we bail out
   if(list.isEmpty()) {
     KMessageBox::sorry(this, TQString("<qt>")+i18n("At least one transaction/schedule still references the category <b>%1</b>.  However, at least one category with the same currency must exist so that the transactions/schedules can be reassigned.").arg(category.name())+TQString("</qt>"));
-    return TQString();
+    return TQString::null;
   }
 
   // execute dialog and if aborted, return empty string
   if (this->exec() == TQDialog::Rejected)
-    return TQString();
+    return TQString::null;
 
   // otherwise return index of selected payee
   return m_category->selectedItem();

kmymoney2/dialogs/knewloanwizard.cpp

@@ -1072,7 +1072,7 @@ int KNewLoanWizard::term(void) const
 TQString KNewLoanWizard::initialPaymentAccount(void) const
 {
   if(m_dontCreatePayoutCheckBox->isChecked()) {
-    return TQString();
+    return TQString::null;
   }
   return m_assetAccountEdit->selectedItems().first();
 }

kmymoney2/dialogs/kpayeereassigndlg.cpp

@@ -53,13 +53,13 @@ KPayeeReassignDlg::~KPayeeReassignDlg()
 TQString KPayeeReassignDlg::show(const TQValueList<MyMoneyPayee>& payeeslist)
 {
   if (payeeslist.isEmpty())
-   return TQString(); // no payee available? nothing can be selected...
+   return TQString::null; // no payee available? nothing can be selected...
 
   payeeCombo->loadPayees(payeeslist);
 
   // execute dialog and if aborted, return empty string
   if (this->exec() == TQDialog::Rejected)
-    return TQString();
+    return TQString::null;
 
   // otherwise return index of selected payee
   return payeeCombo->selectedItem();

kmymoney2/mymoney/mymoneyaccount.cpp

@@ -450,7 +450,7 @@ void MyMoneyAccountLoan::setPayee(const TQString& payee)
 
 const TQString MyMoneyAccountLoan::interestAccountId(void) const
 {
-  return TQString();
+  return TQString::null;
 }
 
 void MyMoneyAccountLoan::setInterestAccountId(const TQString& /* id */)

kmymoney2/mymoney/mymoneyfile.cpp

@@ -1230,7 +1230,7 @@ TQString MyMoneyFile::locateSubAccount(const MyMoneyAccount& base, const TQStrin
       return locateSubAccount(nextBase, remainder);
     }
   }
-  return TQString();
+  return TQString::null;
 }
 
 TQString MyMoneyFile::value(const TQString& key) const

kmymoney2/mymoney/mymoneykeyvaluecontainer.cpp

@@ -55,7 +55,7 @@ const TQString& MyMoneyKeyValueContainer::value(const TQString& key) const
   it = m_kvp.find(key);
   if(it != m_kvp.end())
     return (*it);
-  return TQString();
+  return TQString::null;
 }
 
 void MyMoneyKeyValueContainer::setValue(const TQString& key, const TQString& value)

kmymoney2/mymoney/mymoneyutils.cpp

@@ -305,7 +305,7 @@ TQString dateToString(const TQDate& date)
   if(!date.isNull() && date.isValid())
     return date.toString(Qt::ISODate);
 
-  return TQString();
+  return TQString::null;
 }
 
 TQDate stringToDate(const TQString& str)
@@ -323,7 +323,7 @@ TQString TQStringEmpty(const TQString& val)
   if(!val.isEmpty())
     return TQString(val);
 
-  return TQString();
+  return TQString::null;
 }
 
 unsigned long extractId(const TQString& txt)

kmymoney2/plugins/ofximport/dialogs/konlinebankingstatus.cpp

@@ -98,14 +98,14 @@ const TQString& KOnlineBankingStatus::appId(void) const
 {
   if(m_appId)
     return m_appId->appId();
-  return TQString();
+  return TQString::null;
 }
 
 TQString KOnlineBankingStatus::headerVersion(void) const
 {
   if(m_headerVersion)
     return m_headerVersion->headerVersion();
-  return TQString();
+  return TQString::null;
 }
 
 #include "konlinebankingstatus.moc"

kmymoney2/plugins/ofximport/dialogs/mymoneyofxconnector.cpp

@@ -125,7 +125,7 @@ const TQString& OfxAppVersion::appId(void) const
   TQString app = m_combo->currentText();
   if(m_appMap[app] != defaultAppId)
     return m_appMap[app];
-  return TQString();
+  return TQString::null;
 }
 
 MyMoneyOfxConnector::MyMoneyOfxConnector(const MyMoneyAccount& _account):

kmymoney2/widgets/kmymoneycombo.cpp

@@ -588,7 +588,7 @@ public:
         return it.key();
       }
     }
-    return TQString();
+    return TQString::null;
   }
 };
 

kmymoney2/widgets/kmymoneywizard.cpp

@@ -106,7 +106,7 @@ bool KMyMoneyWizardPage::isComplete(void) const
 
 const TQString& KMyMoneyWizardPage::helpContext(void) const
 {
-  return TQString();
+  return TQString::null;
 }
 
 KMyMoneyWizard::KMyMoneyWizard(TQWidget *parent, const char *name, bool modal, WFlags f) :

kmymoney2/widgets/registeritem.h

@@ -88,14 +88,14 @@ public:
   virtual const TQDate& sortPostDate(void) const { return nullDate; }
   virtual int sortSamePostDate(void) const = 0;
   virtual const TQDate& sortEntryDate(void) const { return nullDate; }
-  virtual const TQString& sortPayee(void) const { return TQString(); }
+  virtual const TQString& sortPayee(void) const { return TQString::null; }
   virtual const MyMoneyMoney& sortValue(void) const { return nullValue; }
-  virtual const TQString& sortNumber(void) const { return TQString(); }
-  virtual const TQString& sortEntryOrder(void) const { return TQString(); }
+  virtual const TQString& sortNumber(void) const { return TQString::null; }
+  virtual const TQString& sortEntryOrder(void) const { return TQString::null; }
   virtual CashFlowDirection sortType(void) const { return Deposit; }
-  virtual const TQString& sortCategory(void) const { return TQString(); }
+  virtual const TQString& sortCategory(void) const { return TQString::null; }
   virtual MyMoneySplit::reconcileFlagE sortReconcileState(void) const { return MyMoneySplit::MaxReconcileState; }
-  virtual const TQString& sortSecurity(void) const { return TQString(); }
+  virtual const TQString& sortSecurity(void) const { return TQString::null; }
 
   /**
     * This method sets the row offset of the item in the register