Use a typedef for monetary values

32 files changed, 155 insertions, 135 deletions

diff --git a/src/qt/bitcoinamountfield.cpp b/src/qt/bitcoinamountfield.cpp
index 6466039013..6e35bf17b3 100644
--- a/src/qt/bitcoinamountfield.cpp
+++ b/src/qt/bitcoinamountfield.cpp
@@ -44,7 +44,7 @@ public:
     void fixup(QString &input) const
     {
         bool valid = false;
-        qint64 val = parse(input, &valid);
+        CAmount val = parse(input, &valid);
         if(valid)
         {
             input = BitcoinUnits::format(currentUnit, val, false, BitcoinUnits::separatorAlways);
@@ -52,12 +52,12 @@ public:
         }
     }
 
-    qint64 value(bool *valid_out=0) const
+    CAmount value(bool *valid_out=0) const
     {
         return parse(text(), valid_out);
     }
 
-    void setValue(qint64 value)
+    void setValue(const CAmount& value)
     {
         lineEdit()->setText(BitcoinUnits::format(currentUnit, value, false, BitcoinUnits::separatorAlways));
         emit valueChanged();
@@ -66,9 +66,9 @@ public:
     void stepBy(int steps)
     {
         bool valid = false;
-        qint64 val = value(&valid);
+        CAmount val = value(&valid);
         val = val + steps * singleStep;
-        val = qMin(qMax(val, Q_INT64_C(0)), BitcoinUnits::maxMoney());
+        val = qMin(qMax(val, CAmount(0)), BitcoinUnits::maxMoney());
         setValue(val);
     }
 
@@ -78,7 +78,7 @@ public:
         if(text().isEmpty()) // Allow step-up with empty field
             return StepUpEnabled;
         bool valid = false;
-        qint64 val = value(&valid);
+        CAmount val = value(&valid);
         if(valid)
         {
             if(val > 0)
@@ -92,7 +92,7 @@ public:
     void setDisplayUnit(int unit)
     {
         bool valid = false;
-        qint64 val = value(&valid);
+        CAmount val = value(&valid);
 
         currentUnit = unit;
 
@@ -102,7 +102,7 @@ public:
             clear();
     }
 
-    void setSingleStep(qint64 step)
+    void setSingleStep(const CAmount& step)
     {
         singleStep = step;
     }
@@ -140,7 +140,7 @@ public:
     }
 private:
     int currentUnit;
-    qint64 singleStep;
+    CAmount singleStep;
     mutable QSize cachedMinimumSizeHint;
 
     /**
@@ -148,9 +148,9 @@ private:
      * return validity.
      * @note Must return 0 if !valid.
      */
-    qint64 parse(const QString &text, bool *valid_out=0) const
+    CAmount parse(const QString &text, bool *valid_out=0) const
     {
-        qint64 val = 0;
+        CAmount val = 0;
         bool valid = BitcoinUnits::parse(currentUnit, text, &val);
         if(valid)
         {
@@ -253,12 +253,12 @@ QWidget *BitcoinAmountField::setupTabChain(QWidget *prev)
     return unit;
 }
 
-qint64 BitcoinAmountField::value(bool *valid_out) const
+CAmount BitcoinAmountField::value(bool *valid_out) const
 {
     return amount->value(valid_out);
 }
 
-void BitcoinAmountField::setValue(qint64 value)
+void BitcoinAmountField::setValue(const CAmount& value)
 {
     amount->setValue(value);
 }
@@ -285,7 +285,7 @@ void BitcoinAmountField::setDisplayUnit(int newUnit)
     unit->setValue(newUnit);
 }
 
-void BitcoinAmountField::setSingleStep(qint64 step)
+void BitcoinAmountField::setSingleStep(const CAmount& step)
 {
     amount->setSingleStep(step);
 }
diff --git a/src/qt/bitcoinamountfield.h b/src/qt/bitcoinamountfield.h
index 84795a7e7a..e52feeb46e 100644
--- a/src/qt/bitcoinamountfield.h
+++ b/src/qt/bitcoinamountfield.h
@@ -5,6 +5,8 @@
 #ifndef BITCOINAMOUNTFIELD_H
 #define BITCOINAMOUNTFIELD_H
 
+#include "amount.h"
+
 #include <QWidget>
 
 class AmountSpinBox;
@@ -19,16 +21,16 @@ class BitcoinAmountField: public QWidget
 {
     Q_OBJECT
 
-    Q_PROPERTY(qint64 value READ value WRITE setValue NOTIFY valueChanged USER true)
+    Q_PROPERTY(CAmount value READ value WRITE setValue NOTIFY valueChanged USER true)
 
 public:
     explicit BitcoinAmountField(QWidget *parent = 0);
 
-    qint64 value(bool *valid=0) const;
-    void setValue(qint64 value);
+    CAmount value(bool *value=0) const;
+    void setValue(const CAmount& value);
 
     /** Set single step in satoshis **/
-    void setSingleStep(qint64 step);
+    void setSingleStep(const CAmount& step);
 
     /** Make read-only **/
     void setReadOnly(bool fReadOnly);
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index 443bed14d7..7380fbd240 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -864,7 +864,7 @@ void BitcoinGUI::closeEvent(QCloseEvent *event)
 }
 
 #ifdef ENABLE_WALLET
-void BitcoinGUI::incomingTransaction(const QString& date, int unit, qint64 amount, const QString& type, const QString& address)
+void BitcoinGUI::incomingTransaction(const QString& date, int unit, const CAmount& amount, const QString& type, const QString& address)
 {
     // On new transaction, make an info balloon
     message((amount)<0 ? tr("Sent transaction") : tr("Incoming transaction"),
diff --git a/src/qt/bitcoingui.h b/src/qt/bitcoingui.h
index 30b05cb7d9..8af6eda867 100644
--- a/src/qt/bitcoingui.h
+++ b/src/qt/bitcoingui.h
@@ -9,6 +9,8 @@
 #include "config/bitcoin-config.h"
 #endif
 
+#include "amount.h"
+
 #include <QLabel>
 #include <QMainWindow>
 #include <QMap>
@@ -159,7 +161,7 @@ public slots:
     bool handlePaymentRequest(const SendCoinsRecipient& recipient);
 
     /** Show incoming transaction notification for new transactions. */
-    void incomingTransaction(const QString& date, int unit, qint64 amount, const QString& type, const QString& address);
+    void incomingTransaction(const QString& date, int unit, const CAmount& amount, const QString& type, const QString& address);
 #endif
 
 private slots:
diff --git a/src/qt/bitcoinunits.cpp b/src/qt/bitcoinunits.cpp
index 3215363fa0..423b559bf7 100644
--- a/src/qt/bitcoinunits.cpp
+++ b/src/qt/bitcoinunits.cpp
@@ -91,12 +91,13 @@ int BitcoinUnits::decimals(int unit)
     }
 }
 
-QString BitcoinUnits::format(int unit, qint64 n, bool fPlus, SeparatorStyle separators)
+QString BitcoinUnits::format(int unit, const CAmount& nIn, bool fPlus, SeparatorStyle separators)
 {
     // Note: not using straight sprintf here because we do NOT want
     // localized number formatting.
     if(!valid(unit))
         return QString(); // Refuse to format invalid unit
+    qint64 n = (qint64)nIn;
     qint64 coin = factor(unit);
     int num_decimals = decimals(unit);
     qint64 n_abs = (n > 0 ? n : -n);
@@ -138,12 +139,12 @@ QString BitcoinUnits::format(int unit, qint64 n, bool fPlus, SeparatorStyle sepa
 // Please take care to use formatHtmlWithUnit instead, when
 // appropriate.
 
-QString BitcoinUnits::formatWithUnit(int unit, qint64 amount, bool plussign, SeparatorStyle separators)
+QString BitcoinUnits::formatWithUnit(int unit, const CAmount& amount, bool plussign, SeparatorStyle separators)
 {
     return format(unit, amount, plussign, separators) + QString(" ") + name(unit);
 }
 
-QString BitcoinUnits::formatHtmlWithUnit(int unit, qint64 amount, bool plussign, SeparatorStyle separators)
+QString BitcoinUnits::formatHtmlWithUnit(int unit, const CAmount& amount, bool plussign, SeparatorStyle separators)
 {
     QString str(formatWithUnit(unit, amount, plussign, separators));
     str.replace(QChar(THIN_SP_CP), QString(THIN_SP_HTML));
@@ -151,7 +152,7 @@ QString BitcoinUnits::formatHtmlWithUnit(int unit, qint64 amount, bool plussign,
 }
 
 
-bool BitcoinUnits::parse(int unit, const QString &value, qint64 *val_out)
+bool BitcoinUnits::parse(int unit, const QString &value, CAmount *val_out)
 {
     if(!valid(unit) || value.isEmpty())
         return false; // Refuse to parse invalid unit or empty string
@@ -182,7 +183,7 @@ bool BitcoinUnits::parse(int unit, const QString &value, qint64 *val_out)
     {
         return false; // Longer numbers will exceed 63 bits
     }
-    qint64 retvalue = str.toLongLong(&ok);
+    CAmount retvalue(str.toLongLong(&ok));
     if(val_out)
     {
         *val_out = retvalue;
@@ -226,7 +227,7 @@ QVariant BitcoinUnits::data(const QModelIndex &index, int role) const
     return QVariant();
 }
 
-qint64 BitcoinUnits::maxMoney()
+CAmount BitcoinUnits::maxMoney()
 {
     return MAX_MONEY;
 }
diff --git a/src/qt/bitcoinunits.h b/src/qt/bitcoinunits.h
index be9dca6012..a392c42b9b 100644
--- a/src/qt/bitcoinunits.h
+++ b/src/qt/bitcoinunits.h
@@ -5,6 +5,8 @@
 #ifndef BITCOINUNITS_H
 #define BITCOINUNITS_H
 
+#include "amount.h"
+
 #include <QAbstractListModel>
 #include <QString>
 
@@ -85,12 +87,12 @@ public:
     //! Number of decimals left
     static int decimals(int unit);
     //! Format as string
-    static QString format(int unit, qint64 amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
+    static QString format(int unit, const CAmount& amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
     //! Format as string (with unit)
-    static QString formatWithUnit(int unit, qint64 amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
-    static QString formatHtmlWithUnit(int unit, qint64 amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
+    static QString formatWithUnit(int unit, const CAmount& amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
+    static QString formatHtmlWithUnit(int unit, const CAmount& amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
     //! Parse string to coin amount
-    static bool parse(int unit, const QString &value, qint64 *val_out);
+    static bool parse(int unit, const QString &value, CAmount *val_out);
     //! Gets title for amount column including current display unit if optionsModel reference available */
     static QString getAmountColumnTitle(int unit);
     ///@}
@@ -117,7 +119,7 @@ public:
     }
 
     //! Return maximum number of base units (Satoshis)
-    static qint64 maxMoney();
+    static CAmount maxMoney();
 
 private:
     QList<BitcoinUnits::Unit> unitlist;
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index d10463fd8f..ba0febe546 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -29,7 +29,7 @@
 #include <QTreeWidgetItem>
 
 using namespace std;
-QList<qint64> CoinControlDialog::payAmounts;
+QList<CAmount> CoinControlDialog::payAmounts;
 CCoinControl* CoinControlDialog::coinControl = new CCoinControl();
 
 CoinControlDialog::CoinControlDialog(QWidget *parent) :
@@ -443,10 +443,10 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
         return;
 
     // nPayAmount
-    qint64 nPayAmount = 0;
+    CAmount nPayAmount = 0;
     bool fDust = false;
     CMutableTransaction txDummy;
-    foreach(const qint64 &amount, CoinControlDialog::payAmounts)
+    foreach(const CAmount &amount, CoinControlDialog::payAmounts)
     {
         nPayAmount += amount;
 
@@ -460,10 +460,10 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
     }
 
     QString sPriorityLabel      = tr("none");
-    int64_t nAmount             = 0;
-    int64_t nPayFee             = 0;
-    int64_t nAfterFee           = 0;
-    int64_t nChange             = 0;
+    CAmount nAmount             = 0;
+    CAmount nPayFee             = 0;
+    CAmount nAfterFee           = 0;
+    CAmount nChange             = 0;
     unsigned int nBytes         = 0;
     unsigned int nBytesInputs   = 0;
     double dPriority            = 0;
@@ -684,7 +684,7 @@ void CoinControlDialog::updateView()
             itemWalletAddress->setText(COLUMN_ADDRESS, sWalletAddress);
         }
 
-        int64_t nSum = 0;
+        CAmount nSum = 0;
         double dPrioritySum = 0;
         int nChildren = 0;
         int nInputSum = 0;
diff --git a/src/qt/coincontroldialog.h b/src/qt/coincontroldialog.h
index a6f239a898..9eaa8eb41d 100644
--- a/src/qt/coincontroldialog.h
+++ b/src/qt/coincontroldialog.h
@@ -5,6 +5,8 @@
 #ifndef COINCONTROLDIALOG_H
 #define COINCONTROLDIALOG_H
 
+#include "amount.h"
+
 #include <QAbstractButton>
 #include <QAction>
 #include <QDialog>
@@ -37,7 +39,7 @@ public:
     static void updateLabels(WalletModel*, QDialog*);
     static QString getPriorityLabel(const CTxMemPool& pool, double);
 
-    static QList<qint64> payAmounts;
+    static QList<CAmount> payAmounts;
     static CCoinControl *coinControl;
 
 private:
diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
index fc22871a6b..91bb10755a 100644
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -221,7 +221,7 @@ QString formatBitcoinURI(const SendCoinsRecipient &info)
     return ret;
 }
 
-bool isDust(const QString& address, qint64 amount)
+bool isDust(const QString& address, const CAmount& amount)
 {
     CTxDestination dest = CBitcoinAddress(address.toStdString()).Get();
     CScript script = GetScriptForDestination(dest);
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index 67e11e59a0..0939c78f64 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -5,6 +5,8 @@
 #ifndef GUIUTIL_H
 #define GUIUTIL_H
 
+#include "amount.h"
+
 #include <QHeaderView>
 #include <QMessageBox>
 #include <QObject>
@@ -46,7 +48,7 @@ namespace GUIUtil
     QString formatBitcoinURI(const SendCoinsRecipient &info);
 
     // Returns true if given address+amount meets "dust" definition
-    bool isDust(const QString& address, qint64 amount);
+    bool isDust(const QString& address, const CAmount& amount);
 
     // HTML escaping for rich text controls
     QString HtmlEscape(const QString& str, bool fMultiLine=false);
diff --git a/src/qt/optionsmodel.cpp b/src/qt/optionsmodel.cpp
index bd747faeb6..cb80bd0e3d 100644
--- a/src/qt/optionsmodel.cpp
+++ b/src/qt/optionsmodel.cpp
@@ -275,9 +275,9 @@ bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, in
 #ifdef ENABLE_WALLET
         case Fee: { // core option - can be changed on-the-fly
             // Todo: Add is valid check  and warn via message, if not
-            qint64 nTransactionFee = value.toLongLong();
+            CAmount nTransactionFee(value.toLongLong());
             payTxFee = CFeeRate(nTransactionFee, 1000);
-            settings.setValue("nTransactionFee", nTransactionFee);
+            settings.setValue("nTransactionFee", qint64(nTransactionFee));
             emit transactionFeeChanged(nTransactionFee);
             break;
         }
diff --git a/src/qt/optionsmodel.h b/src/qt/optionsmodel.h
index 80adab89c8..42ea3bf8e5 100644
--- a/src/qt/optionsmodel.h
+++ b/src/qt/optionsmodel.h
@@ -5,6 +5,8 @@
 #ifndef OPTIONSMODEL_H
 #define OPTIONSMODEL_H
 
+#include "amount.h"
+
 #include <QAbstractListModel>
 
 QT_BEGIN_NAMESPACE
@@ -82,7 +84,7 @@ private:
 
 signals:
     void displayUnitChanged(int unit);
-    void transactionFeeChanged(qint64);
+    void transactionFeeChanged(const CAmount&);
     void coinControlFeaturesChanged(bool);
 };
 
diff --git a/src/qt/overviewpage.cpp b/src/qt/overviewpage.cpp
index 90762bea5d..1d6c23f8a0 100644
--- a/src/qt/overviewpage.cpp
+++ b/src/qt/overviewpage.cpp
@@ -146,7 +146,7 @@ OverviewPage::~OverviewPage()
     delete ui;
 }
 
-void OverviewPage::setBalance(qint64 balance, qint64 unconfirmedBalance, qint64 immatureBalance, qint64 watchOnlyBalance, qint64 watchUnconfBalance, qint64 watchImmatureBalance)
+void OverviewPage::setBalance(const CAmount& balance, const CAmount& unconfirmedBalance, const CAmount& immatureBalance, const CAmount& watchOnlyBalance, const CAmount& watchUnconfBalance, const CAmount& watchImmatureBalance)
 {
     int unit = walletModel->getOptionsModel()->getDisplayUnit();
     currentBalance = balance;
@@ -220,7 +220,7 @@ void OverviewPage::setWalletModel(WalletModel *model)
         // Keep up to date with wallet
         setBalance(model->getBalance(), model->getUnconfirmedBalance(), model->getImmatureBalance(),
                    model->getWatchBalance(), model->getWatchUnconfirmedBalance(), model->getWatchImmatureBalance());
-        connect(model, SIGNAL(balanceChanged(qint64, qint64, qint64, qint64, qint64, qint64)), this, SLOT(setBalance(qint64, qint64, qint64, qint64, qint64, qint64)));
+        connect(model, SIGNAL(balanceChanged(const CAmount&, const CAmount&, const CAmount&, const CAmount&, const CAmount&, const CAmount&)), this, SLOT(setBalance(const CAmount&, const CAmount&, const CAmount&, const CAmount&, const CAmount&, const CAmount&)));
 
         connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(updateDisplayUnit()));
 
diff --git a/src/qt/overviewpage.h b/src/qt/overviewpage.h
index f46374efba..03f239008f 100644
--- a/src/qt/overviewpage.h
+++ b/src/qt/overviewpage.h
@@ -5,6 +5,8 @@
 #ifndef OVERVIEWPAGE_H
 #define OVERVIEWPAGE_H
 
+#include "amount.h"
+
 #include <QWidget>
 
 class ClientModel;
@@ -34,8 +36,8 @@ public:
     void showOutOfSyncWarning(bool fShow);
 
 public slots:
-    void setBalance(qint64 balance, qint64 unconfirmedBalance, qint64 immatureBalance,
-                    qint64 watchOnlyBalance, qint64 watchUnconfBalance, qint64 watchImmatureBalance);
+    void setBalance(const CAmount& balance, const CAmount& unconfirmedBalance, const CAmount& immatureBalance,
+                    const CAmount& watchOnlyBalance, const CAmount& watchUnconfBalance, const CAmount& watchImmatureBalance);
 
 signals:
     void transactionClicked(const QModelIndex &index);
@@ -44,12 +46,12 @@ private:
     Ui::OverviewPage *ui;
     ClientModel *clientModel;
     WalletModel *walletModel;
-    qint64 currentBalance;
-    qint64 currentUnconfirmedBalance;
-    qint64 currentImmatureBalance;
-    qint64 currentWatchOnlyBalance;
-    qint64 currentWatchUnconfBalance;
-    qint64 currentWatchImmatureBalance;
+    CAmount currentBalance;
+    CAmount currentUnconfirmedBalance;
+    CAmount currentImmatureBalance;
+    CAmount currentWatchOnlyBalance;
+    CAmount currentWatchUnconfBalance;
+    CAmount currentWatchImmatureBalance;
 
     TxViewDelegate *txdelegate;
     TransactionFilterProxy *filter;
diff --git a/src/qt/paymentrequestplus.cpp b/src/qt/paymentrequestplus.cpp
index 7b7de49831..7aefffe24a 100644
--- a/src/qt/paymentrequestplus.cpp
+++ b/src/qt/paymentrequestplus.cpp
@@ -196,9 +196,9 @@ bool PaymentRequestPlus::getMerchant(X509_STORE* certStore, QString& merchant) c
     return fResult;
 }
 
-QList<std::pair<CScript,qint64> > PaymentRequestPlus::getPayTo() const
+QList<std::pair<CScript,CAmount> > PaymentRequestPlus::getPayTo() const
 {
-    QList<std::pair<CScript,qint64> > result;
+    QList<std::pair<CScript,CAmount> > result;
     for (int i = 0; i < details.outputs_size(); i++)
     {
         const unsigned char* scriptStr = (const unsigned char*)details.outputs(i).script().data();
diff --git a/src/qt/paymentrequestplus.h b/src/qt/paymentrequestplus.h
index 3c4861a4d4..3d94d93269 100644
--- a/src/qt/paymentrequestplus.h
+++ b/src/qt/paymentrequestplus.h
@@ -33,7 +33,7 @@ public:
     bool getMerchant(X509_STORE* certStore, QString& merchant) const;
 
     // Returns list of outputs, amount
-    QList<std::pair<CScript,qint64> > getPayTo() const;
+    QList<std::pair<CScript,CAmount> > getPayTo() const;
 
     const payments::PaymentDetails& getDetails() const { return details; }
 
diff --git a/src/qt/paymentserver.cpp b/src/qt/paymentserver.cpp
index cc4478f39f..707de55290 100644
--- a/src/qt/paymentserver.cpp
+++ b/src/qt/paymentserver.cpp
@@ -532,10 +532,10 @@ bool PaymentServer::processPaymentRequest(PaymentRequestPlus& request, SendCoins
 
     request.getMerchant(PaymentServer::certStore, recipient.authenticatedMerchant);
 
-    QList<std::pair<CScript, qint64> > sendingTos = request.getPayTo();
+    QList<std::pair<CScript, CAmount> > sendingTos = request.getPayTo();
     QStringList addresses;
 
-    foreach(const PAIRTYPE(CScript, qint64)& sendingTo, sendingTos) {
+    foreach(const PAIRTYPE(CScript, CAmount)& sendingTo, sendingTos) {
         // Extract and check destination addresses
         CTxDestination dest;
         if (ExtractDestination(sendingTo.first, dest)) {
diff --git a/src/qt/sendcoinsdialog.cpp b/src/qt/sendcoinsdialog.cpp
index 25e3d2a0dc..d67cac57b4 100644
--- a/src/qt/sendcoinsdialog.cpp
+++ b/src/qt/sendcoinsdialog.cpp
@@ -92,7 +92,7 @@ void SendCoinsDialog::setModel(WalletModel *model)
 
         setBalance(model->getBalance(), model->getUnconfirmedBalance(), model->getImmatureBalance(),
                    model->getWatchBalance(), model->getWatchUnconfirmedBalance(), model->getWatchImmatureBalance());
-        connect(model, SIGNAL(balanceChanged(qint64, qint64, qint64, qint64, qint64, qint64)), this, SLOT(setBalance(qint64, qint64, qint64, qint64, qint64, qint64)));
+        connect(model, SIGNAL(balanceChanged(const CAmount&, const CAmount&, const CAmount&, const CAmount&, const CAmount&, const CAmount&)), this, SLOT(setBalance(const CAmount&, const CAmount&, const CAmount&, const CAmount&, const CAmount&, const CAmount&)));
         connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(updateDisplayUnit()));
 
         // Coin Control
@@ -203,7 +203,7 @@ void SendCoinsDialog::on_sendButton_clicked()
         return;
     }
 
-    qint64 txFee = currentTransaction.getTransactionFee();
+    CAmount txFee = currentTransaction.getTransactionFee();
     QString questionString = tr("Are you sure you want to send?");
     questionString.append("<br /><br />%1");
 
@@ -218,7 +218,7 @@ void SendCoinsDialog::on_sendButton_clicked()
 
     // add total amount in all subdivision units
     questionString.append("<hr />");
-    qint64 totalAmount = currentTransaction.getTotalTransactionAmount() + txFee;
+    CAmount totalAmount = currentTransaction.getTotalTransactionAmount() + txFee;
     QStringList alternativeUnits;
     foreach(BitcoinUnits::Unit u, BitcoinUnits::availableUnits())
     {
@@ -384,8 +384,8 @@ bool SendCoinsDialog::handlePaymentRequest(const SendCoinsRecipient &rv)
     return true;
 }
 
-void SendCoinsDialog::setBalance(qint64 balance, qint64 unconfirmedBalance, qint64 immatureBalance, 
-                                 qint64 watchBalance, qint64 watchUnconfirmedBalance, qint64 watchImmatureBalance)
+void SendCoinsDialog::setBalance(const CAmount& balance, const CAmount& unconfirmedBalance, const CAmount& immatureBalance, 
+                                 const CAmount& watchBalance, const CAmount& watchUnconfirmedBalance, const CAmount& watchImmatureBalance)
 {
     Q_UNUSED(unconfirmedBalance);
     Q_UNUSED(immatureBalance);
diff --git a/src/qt/sendcoinsdialog.h b/src/qt/sendcoinsdialog.h
index a090fa42d5..74cc4bde56 100644
--- a/src/qt/sendcoinsdialog.h
+++ b/src/qt/sendcoinsdialog.h
@@ -47,8 +47,8 @@ public slots:
     void accept();
     SendCoinsEntry *addEntry();
     void updateTabsAndLabels();
-    void setBalance(qint64 balance, qint64 unconfirmedBalance, qint64 immatureBalance,
-                    qint64 watchOnlyBalance, qint64 watchUnconfBalance, qint64 watchImmatureBalance);
+    void setBalance(const CAmount& balance, const CAmount& unconfirmedBalance, const CAmount& immatureBalance,
+                    const CAmount& watchOnlyBalance, const CAmount& watchUnconfBalance, const CAmount& watchImmatureBalance);
 
 private:
     Ui::SendCoinsDialog *ui;
diff --git a/src/qt/transactiondesc.cpp b/src/qt/transactiondesc.cpp
index 4923718341..1efad8259b 100644
--- a/src/qt/transactiondesc.cpp
+++ b/src/qt/transactiondesc.cpp
@@ -56,9 +56,9 @@ QString TransactionDesc::toHTML(CWallet *wallet, CWalletTx &wtx, TransactionReco
     strHTML += "<html><font face='verdana, arial, helvetica, sans-serif'>";
 
     int64_t nTime = wtx.GetTxTime();
-    int64_t nCredit = wtx.GetCredit(ISMINE_ALL);
-    int64_t nDebit = wtx.GetDebit(ISMINE_ALL);
-    int64_t nNet = nCredit - nDebit;
+    CAmount nCredit = wtx.GetCredit(ISMINE_ALL);
+    CAmount nDebit = wtx.GetDebit(ISMINE_ALL);
+    CAmount nNet = nCredit - nDebit;
 
     strHTML += "<b>" + tr("Status") + ":</b> " + FormatTxStatus(wtx);
     int nRequests = wtx.GetRequestCount();
@@ -132,7 +132,7 @@ QString TransactionDesc::toHTML(CWallet *wallet, CWalletTx &wtx, TransactionReco
         //
         // Coinbase
         //
-        int64_t nUnmatured = 0;
+        CAmount nUnmatured = 0;
         BOOST_FOREACH(const CTxOut& txout, wtx.vout)
             nUnmatured += wallet->GetCredit(txout, ISMINE_ALL);
         strHTML += "<b>" + tr("Credit") + ":</b> ";
@@ -206,13 +206,13 @@ QString TransactionDesc::toHTML(CWallet *wallet, CWalletTx &wtx, TransactionReco
             if (fAllToMe)
             {
                 // Payment to self
-                int64_t nChange = wtx.GetChange();
-                int64_t nValue = nCredit - nChange;
+                CAmount nChange = wtx.GetChange();
+                CAmount nValue = nCredit - nChange;
                 strHTML += "<b>" + tr("Total debit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, -nValue) + "<br>";
                 strHTML += "<b>" + tr("Total credit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, nValue) + "<br>";
             }
 
-            int64_t nTxFee = nDebit - wtx.GetValueOut();
+            CAmount nTxFee = nDebit - wtx.GetValueOut();
             if (nTxFee > 0)
                 strHTML += "<b>" + tr("Transaction fee") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, -nTxFee) + "<br>";
         }
diff --git a/src/qt/transactionfilterproxy.cpp b/src/qt/transactionfilterproxy.cpp
index 6ab029173b..2a0f621d1e 100644
--- a/src/qt/transactionfilterproxy.cpp
+++ b/src/qt/transactionfilterproxy.cpp
@@ -78,7 +78,7 @@ void TransactionFilterProxy::setTypeFilter(quint32 modes)
     invalidateFilter();
 }
 
-void TransactionFilterProxy::setMinAmount(qint64 minimum)
+void TransactionFilterProxy::setMinAmount(const CAmount& minimum)
 {
     this->minAmount = minimum;
     invalidateFilter();
diff --git a/src/qt/transactionfilterproxy.h b/src/qt/transactionfilterproxy.h
index f408317b53..ca31ee8f87 100644
--- a/src/qt/transactionfilterproxy.h
+++ b/src/qt/transactionfilterproxy.h
@@ -5,6 +5,8 @@
 #ifndef TRANSACTIONFILTERPROXY_H
 #define TRANSACTIONFILTERPROXY_H
 
+#include "amount.h"
+
 #include <QDateTime>
 #include <QSortFilterProxyModel>
 
@@ -38,7 +40,7 @@ public:
       @note Type filter takes a bit field created with TYPE() or ALL_TYPES
      */
     void setTypeFilter(quint32 modes);
-    void setMinAmount(qint64 minimum);
+    void setMinAmount(const CAmount& minimum);
     void setWatchOnlyFilter(WatchOnlyFilter filter);
 
     /** Set maximum number of rows returned, -1 if unlimited. */
@@ -58,7 +60,7 @@ private:
     QString addrPrefix;
     quint32 typeFilter;
     WatchOnlyFilter watchOnlyFilter;
-    qint64 minAmount;
+    CAmount minAmount;
     int limitRows;
     bool showInactive;
 };
diff --git a/src/qt/transactionrecord.cpp b/src/qt/transactionrecord.cpp
index 20c1449c92..afb343f349 100644
--- a/src/qt/transactionrecord.cpp
+++ b/src/qt/transactionrecord.cpp
@@ -32,9 +32,9 @@ QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *
 {
     QList<TransactionRecord> parts;
     int64_t nTime = wtx.GetTxTime();
-    int64_t nCredit = wtx.GetCredit(true);
-    int64_t nDebit = wtx.GetDebit(ISMINE_ALL);
-    int64_t nNet = nCredit - nDebit;
+    CAmount nCredit = wtx.GetCredit(true);
+    CAmount nDebit = wtx.GetDebit(ISMINE_ALL);
+    CAmount nNet = nCredit - nDebit;
     uint256 hash = wtx.GetHash();
     std::map<std::string, std::string> mapValue = wtx.mapValue;
 
@@ -97,7 +97,7 @@ QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *
         if (fAllFromMe && fAllToMe)
         {
             // Payment to self
-            int64_t nChange = wtx.GetChange();
+            CAmount nChange = wtx.GetChange();
 
             parts.append(TransactionRecord(hash, nTime, TransactionRecord::SendToSelf, "",
                             -(nDebit - nChange), nCredit - nChange));
@@ -108,7 +108,7 @@ QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *
             //
             // Debit
             //
-            int64_t nTxFee = nDebit - wtx.GetValueOut();
+            CAmount nTxFee = nDebit - wtx.GetValueOut();
 
             for (unsigned int nOut = 0; nOut < wtx.vout.size(); nOut++)
             {
@@ -138,7 +138,7 @@ QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *
                     sub.address = mapValue["to"];
                 }
 
-                int64_t nValue = txout.nValue;
+                CAmount nValue = txout.nValue;
                 /* Add fee to first output */
                 if (nTxFee > 0)
                 {
diff --git a/src/qt/transactionrecord.h b/src/qt/transactionrecord.h
index 626b7654c6..9276c9f0af 100644
--- a/src/qt/transactionrecord.h
+++ b/src/qt/transactionrecord.h
@@ -5,6 +5,7 @@
 #ifndef TRANSACTIONRECORD_H
 #define TRANSACTIONRECORD_H
 
+#include "amount.h"
 #include "uint256.h"
 
 #include <QList>
@@ -94,7 +95,7 @@ public:
 
     TransactionRecord(uint256 hash, qint64 time,
                 Type type, const std::string &address,
-                qint64 debit, qint64 credit):
+                const CAmount& debit, const CAmount& credit):
             hash(hash), time(time), type(type), address(address), debit(debit), credit(credit),
             idx(0)
     {
@@ -111,8 +112,8 @@ public:
     qint64 time;
     Type type;
     std::string address;
-    qint64 debit;
-    qint64 credit;
+    CAmount debit;
+    CAmount credit;
     /**@}*/
 
     /** Subtransaction index, for sort key */
diff --git a/src/qt/transactiontablemodel.cpp b/src/qt/transactiontablemodel.cpp
index 2b869b4ea5..e34d776818 100644
--- a/src/qt/transactiontablemodel.cpp
+++ b/src/qt/transactiontablemodel.cpp
@@ -546,7 +546,7 @@ QVariant TransactionTableModel::data(const QModelIndex &index, int role) const
         case ToAddress:
             return formatTxToAddress(rec, true);
         case Amount:
-            return rec->credit + rec->debit;
+            return qint64(rec->credit + rec->debit);
         }
         break;
     case Qt::ToolTipRole:
@@ -583,7 +583,7 @@ QVariant TransactionTableModel::data(const QModelIndex &index, int role) const
     case LabelRole:
         return walletModel->getAddressTableModel()->labelForAddress(QString::fromStdString(rec->address));
     case AmountRole:
-        return rec->credit + rec->debit;
+        return qint64(rec->credit + rec->debit);
     case TxIDRole:
         return rec->getTxID();
     case TxHashRole:
diff --git a/src/qt/transactionview.cpp b/src/qt/transactionview.cpp
index a7ba100cd2..d153973872 100644
--- a/src/qt/transactionview.cpp
+++ b/src/qt/transactionview.cpp
@@ -304,7 +304,7 @@ void TransactionView::changedAmount(const QString &amount)
 {
     if(!transactionProxyModel)
         return;
-    qint64 amount_parsed = 0;
+    CAmount amount_parsed = 0;
     if(BitcoinUnits::parse(model->getOptionsModel()->getDisplayUnit(), amount, &amount_parsed))
     {
         transactionProxyModel->setMinAmount(amount_parsed);
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
index ed90914ba7..b8701a23a6 100644
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -55,11 +55,11 @@ WalletModel::~WalletModel()
     unsubscribeFromCoreSignals();
 }
 
-qint64 WalletModel::getBalance(const CCoinControl *coinControl) const
+CAmount WalletModel::getBalance(const CCoinControl *coinControl) const
 {
     if (coinControl)
     {
-        qint64 nBalance = 0;
+        CAmount nBalance = 0;
         std::vector<COutput> vCoins;
         wallet->AvailableCoins(vCoins, true, coinControl);
         BOOST_FOREACH(const COutput& out, vCoins)
@@ -72,12 +72,12 @@ qint64 WalletModel::getBalance(const CCoinControl *coinControl) const
     return wallet->GetBalance();
 }
 
-qint64 WalletModel::getUnconfirmedBalance() const
+CAmount WalletModel::getUnconfirmedBalance() const
 {
     return wallet->GetUnconfirmedBalance();
 }
 
-qint64 WalletModel::getImmatureBalance() const
+CAmount WalletModel::getImmatureBalance() const
 {
     return wallet->GetImmatureBalance();
 }
@@ -87,17 +87,17 @@ bool WalletModel::haveWatchOnly() const
     return fHaveWatchOnly;
 }
 
-qint64 WalletModel::getWatchBalance() const
+CAmount WalletModel::getWatchBalance() const
 {
     return wallet->GetWatchOnlyBalance();
 }
 
-qint64 WalletModel::getWatchUnconfirmedBalance() const
+CAmount WalletModel::getWatchUnconfirmedBalance() const
 {
     return wallet->GetUnconfirmedWatchOnlyBalance();
 }
 
-qint64 WalletModel::getWatchImmatureBalance() const
+CAmount WalletModel::getWatchImmatureBalance() const
 {
     return wallet->GetImmatureWatchOnlyBalance();
 }
@@ -137,12 +137,12 @@ void WalletModel::pollBalanceChanged()
 
 void WalletModel::checkBalanceChanged()
 {
-    qint64 newBalance = getBalance();
-    qint64 newUnconfirmedBalance = getUnconfirmedBalance();
-    qint64 newImmatureBalance = getImmatureBalance();
-    qint64 newWatchOnlyBalance = 0;
-    qint64 newWatchUnconfBalance = 0;
-    qint64 newWatchImmatureBalance = 0;
+    CAmount newBalance = getBalance();
+    CAmount newUnconfirmedBalance = getUnconfirmedBalance();
+    CAmount newImmatureBalance = getImmatureBalance();
+    CAmount newWatchOnlyBalance = 0;
+    CAmount newWatchUnconfBalance = 0;
+    CAmount newWatchImmatureBalance = 0;
     if (haveWatchOnly())
     {
         newWatchOnlyBalance = getWatchBalance();
@@ -194,9 +194,9 @@ bool WalletModel::validateAddress(const QString &address)
 
 WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransaction &transaction, const CCoinControl *coinControl)
 {
-    qint64 total = 0;
+    CAmount total = 0;
     QList<SendCoinsRecipient> recipients = transaction.getRecipients();
-    std::vector<std::pair<CScript, int64_t> > vecSend;
+    std::vector<std::pair<CScript, CAmount> > vecSend;
 
     if(recipients.empty())
     {
@@ -211,7 +211,7 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact
     {
         if (rcp.paymentRequest.IsInitialized())
         {   // PaymentRequest...
-            int64_t subtotal = 0;
+            CAmount subtotal = 0;
             const payments::PaymentDetails& details = rcp.paymentRequest.getDetails();
             for (int i = 0; i < details.outputs_size(); i++)
             {
@@ -220,7 +220,7 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact
                 subtotal += out.amount();
                 const unsigned char* scriptStr = (const unsigned char*)out.script().data();
                 CScript scriptPubKey(scriptStr, scriptStr+out.script().size());
-                vecSend.push_back(std::pair<CScript, int64_t>(scriptPubKey, out.amount()));
+                vecSend.push_back(std::pair<CScript, CAmount>(scriptPubKey, out.amount()));
             }
             if (subtotal <= 0)
             {
@@ -242,7 +242,7 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact
             ++nAddresses;
 
             CScript scriptPubKey = GetScriptForDestination(CBitcoinAddress(rcp.address.toStdString()).Get());
-            vecSend.push_back(std::pair<CScript, int64_t>(scriptPubKey, rcp.amount));
+            vecSend.push_back(std::pair<CScript, CAmount>(scriptPubKey, rcp.amount));
 
             total += rcp.amount;
         }
@@ -252,7 +252,7 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact
         return DuplicateAddress;
     }
 
-    qint64 nBalance = getBalance(coinControl);
+    CAmount nBalance = getBalance(coinControl);
 
     if(total > nBalance)
     {
@@ -263,7 +263,7 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact
         LOCK2(cs_main, wallet->cs_wallet);
 
         transaction.newPossibleKeyChange(wallet);
-        int64_t nFeeRequired = 0;
+        CAmount nFeeRequired = 0;
         std::string strFailReason;
 
         CWalletTx *newTx = transaction.getTransaction();
diff --git a/src/qt/walletmodel.h b/src/qt/walletmodel.h
index 111ae2178c..b1d0f28f12 100644
--- a/src/qt/walletmodel.h
+++ b/src/qt/walletmodel.h
@@ -37,7 +37,7 @@ class SendCoinsRecipient
 {
 public:
     explicit SendCoinsRecipient() : amount(0), nVersion(SendCoinsRecipient::CURRENT_VERSION) { }
-    explicit SendCoinsRecipient(const QString &addr, const QString &label, quint64 amount, const QString &message):
+    explicit SendCoinsRecipient(const QString &addr, const QString &label, const CAmount& amount, const QString &message):
         address(addr), label(label), amount(amount), message(message), nVersion(SendCoinsRecipient::CURRENT_VERSION) {}
 
     // If from an insecure payment request, this is used for storing
@@ -47,7 +47,7 @@ public:
     // Todo: This is a hack, should be replaced with a cleaner solution!
     QString address;
     QString label;
-    qint64 amount;
+    CAmount amount;
     // If from a payment request, this is used for storing the memo
     QString message;
 
@@ -125,13 +125,13 @@ public:
     TransactionTableModel *getTransactionTableModel();
     RecentRequestsTableModel *getRecentRequestsTableModel();
 
-    qint64 getBalance(const CCoinControl *coinControl = NULL) const;
-    qint64 getUnconfirmedBalance() const;
-    qint64 getImmatureBalance() const;
+    CAmount getBalance(const CCoinControl *coinControl = NULL) const;
+    CAmount getUnconfirmedBalance() const;
+    CAmount getImmatureBalance() const;
     bool haveWatchOnly() const;
-    qint64 getWatchBalance() const;
-    qint64 getWatchUnconfirmedBalance() const;
-    qint64 getWatchImmatureBalance() const;
+    CAmount getWatchBalance() const;
+    CAmount getWatchUnconfirmedBalance() const;
+    CAmount getWatchImmatureBalance() const;
     EncryptionStatus getEncryptionStatus() const;
     bool processingQueuedTransactions() { return fProcessingQueuedTransactions; }
 
@@ -210,12 +210,12 @@ private:
     RecentRequestsTableModel *recentRequestsTableModel;
 
     // Cache some values to be able to detect changes
-    qint64 cachedBalance;
-    qint64 cachedUnconfirmedBalance;
-    qint64 cachedImmatureBalance;
-    qint64 cachedWatchOnlyBalance;
-    qint64 cachedWatchUnconfBalance;
-    qint64 cachedWatchImmatureBalance;
+    CAmount cachedBalance;
+    CAmount cachedUnconfirmedBalance;
+    CAmount cachedImmatureBalance;
+    CAmount cachedWatchOnlyBalance;
+    CAmount cachedWatchUnconfBalance;
+    CAmount cachedWatchImmatureBalance;
     EncryptionStatus cachedEncryptionStatus;
     int cachedNumBlocks;
 
@@ -227,8 +227,8 @@ private:
 
 signals:
     // Signal that balance in wallet changed
-    void balanceChanged(qint64 balance, qint64 unconfirmedBalance, qint64 immatureBalance,
-                        qint64 watchOnlyBalance, qint64 watchUnconfBalance, qint64 watchImmatureBalance);
+    void balanceChanged(const CAmount& balance, const CAmount& unconfirmedBalance, const CAmount& immatureBalance,
+                        const CAmount& watchOnlyBalance, const CAmount& watchUnconfBalance, const CAmount& watchImmatureBalance);
 
     // Encryption status of wallet changed
     void encryptionStatusChanged(int status);
diff --git a/src/qt/walletmodeltransaction.cpp b/src/qt/walletmodeltransaction.cpp
index 943f13e208..ddd2d09bb5 100644
--- a/src/qt/walletmodeltransaction.cpp
+++ b/src/qt/walletmodeltransaction.cpp
@@ -31,19 +31,19 @@ CWalletTx *WalletModelTransaction::getTransaction()
     return walletTransaction;
 }
 
-qint64 WalletModelTransaction::getTransactionFee()
+CAmount WalletModelTransaction::getTransactionFee()
 {
     return fee;
 }
 
-void WalletModelTransaction::setTransactionFee(qint64 newFee)
+void WalletModelTransaction::setTransactionFee(const CAmount& newFee)
 {
     fee = newFee;
 }
 
-qint64 WalletModelTransaction::getTotalTransactionAmount()
+CAmount WalletModelTransaction::getTotalTransactionAmount()
 {
-    qint64 totalTransactionAmount = 0;
+    CAmount totalTransactionAmount = 0;
     foreach(const SendCoinsRecipient &rcp, recipients)
     {
         totalTransactionAmount += rcp.amount;
diff --git a/src/qt/walletmodeltransaction.h b/src/qt/walletmodeltransaction.h
index b7e85bcd11..4eadfbe4d1 100644
--- a/src/qt/walletmodeltransaction.h
+++ b/src/qt/walletmodeltransaction.h
@@ -26,10 +26,10 @@ public:
 
     CWalletTx *getTransaction();
 
-    void setTransactionFee(qint64 newFee);
-    qint64 getTransactionFee();
+    void setTransactionFee(const CAmount& newFee);
+    CAmount getTransactionFee();
 
-    qint64 getTotalTransactionAmount();
+    CAmount getTotalTransactionAmount();
 
     void newPossibleKeyChange(CWallet *wallet);
     CReserveKey *getPossibleKeyChange();
@@ -38,7 +38,7 @@ private:
     const QList<SendCoinsRecipient> recipients;
     CWalletTx *walletTransaction;
     CReserveKey *keyChange;
-    qint64 fee;
+    CAmount fee;
 };
 
 #endif // WALLETMODELTRANSACTION_H
diff --git a/src/qt/walletview.cpp b/src/qt/walletview.cpp
index b40ddc0a2f..322d0a6ee6 100644
--- a/src/qt/walletview.cpp
+++ b/src/qt/walletview.cpp
@@ -92,7 +92,7 @@ void WalletView::setBitcoinGUI(BitcoinGUI *gui)
         connect(this, SIGNAL(encryptionStatusChanged(int)), gui, SLOT(setEncryptionStatus(int)));
 
         // Pass through transaction notifications
-        connect(this, SIGNAL(incomingTransaction(QString,int,qint64,QString,QString)), gui, SLOT(incomingTransaction(QString,int,qint64,QString,QString)));
+        connect(this, SIGNAL(incomingTransaction(QString,int,const CAmount&,QString,QString)), gui, SLOT(incomingTransaction(QString,int,const CAmount&,QString,QString)));
     }
 }
 
diff --git a/src/qt/walletview.h b/src/qt/walletview.h
index 9cfa8d6760..cafba517fd 100644
--- a/src/qt/walletview.h
+++ b/src/qt/walletview.h
@@ -5,6 +5,8 @@
 #ifndef WALLETVIEW_H
 #define WALLETVIEW_H
 
+#include "amount.h"
+
 #include <QStackedWidget>
 
 class BitcoinGUI;
@@ -111,7 +113,7 @@ signals:
     /** Encryption status of wallet changed */
     void encryptionStatusChanged(int status);
     /** Notify that a new transaction appeared */
-    void incomingTransaction(const QString& date, int unit, qint64 amount, const QString& type, const QString& address);
+    void incomingTransaction(const QString& date, int unit, const CAmount& amount, const QString& type, const QString& address);
 };
 
 #endif // WALLETVIEW_H