diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index f597eeeaf3..3f4f082b8c 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -1,811 +1,815 @@
 // Copyright (c) 2011-2013 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include "coincontroldialog.h"
 #include "ui_coincontroldialog.h"
 
 #include "addresstablemodel.h"
 #include "bitcoinunits.h"
 #include "guiutil.h"
 #include "init.h"
 #include "optionsmodel.h"
 #include "scicon.h"
 #include "walletmodel.h"
 
 #include "coincontrol.h"
 #include "main.h"
 #include "wallet.h"
 
 #include <boost/assign/list_of.hpp> // for 'map_list_of()'
 
 #include <QApplication>
 #include <QCheckBox>
 #include <QCursor>
 #include <QDialogButtonBox>
 #include <QFlags>
 #include <QIcon>
 #include <QSettings>
 #include <QString>
 #include <QTreeWidget>
 #include <QTreeWidgetItem>
 
 using namespace std;
 QList<CAmount> CoinControlDialog::payAmounts;
 CCoinControl* CoinControlDialog::coinControl = new CCoinControl();
 
 CoinControlDialog::CoinControlDialog(QWidget *parent) :
     QDialog(parent),
     ui(new Ui::CoinControlDialog),
     model(0)
 {
     ui->setupUi(this);
 
     // context menu actions
     QAction *copyAddressAction = new QAction(tr("Copy address"), this);
     QAction *copyLabelAction = new QAction(tr("Copy label"), this);
     QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
              copyTransactionHashAction = new QAction(tr("Copy transaction ID"), this);  // we need to enable/disable this
              lockAction = new QAction(tr("Lock unspent"), this);                        // we need to enable/disable this
              unlockAction = new QAction(tr("Unlock unspent"), this);                    // we need to enable/disable this
 
     // context menu
     contextMenu = new QMenu();
     contextMenu->addAction(copyAddressAction);
     contextMenu->addAction(copyLabelAction);
     contextMenu->addAction(copyAmountAction);
     contextMenu->addAction(copyTransactionHashAction);
     contextMenu->addSeparator();
     contextMenu->addAction(lockAction);
     contextMenu->addAction(unlockAction);
 
     // context menu signals
     connect(ui->treeWidget, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(showMenu(QPoint)));
     connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(copyAddress()));
     connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
     connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
     connect(copyTransactionHashAction, SIGNAL(triggered()), this, SLOT(copyTransactionHash()));
     connect(lockAction, SIGNAL(triggered()), this, SLOT(lockCoin()));
     connect(unlockAction, SIGNAL(triggered()), this, SLOT(unlockCoin()));
 
     // clipboard actions
     QAction *clipboardQuantityAction = new QAction(tr("Copy quantity"), this);
     QAction *clipboardAmountAction = new QAction(tr("Copy amount"), this);
     QAction *clipboardFeeAction = new QAction(tr("Copy fee"), this);
     QAction *clipboardAfterFeeAction = new QAction(tr("Copy after fee"), this);
     QAction *clipboardBytesAction = new QAction(tr("Copy bytes"), this);
     QAction *clipboardPriorityAction = new QAction(tr("Copy priority"), this);
     QAction *clipboardLowOutputAction = new QAction(tr("Copy dust"), this);
     QAction *clipboardChangeAction = new QAction(tr("Copy change"), this);
 
     connect(clipboardQuantityAction, SIGNAL(triggered()), this, SLOT(clipboardQuantity()));
     connect(clipboardAmountAction, SIGNAL(triggered()), this, SLOT(clipboardAmount()));
     connect(clipboardFeeAction, SIGNAL(triggered()), this, SLOT(clipboardFee()));
     connect(clipboardAfterFeeAction, SIGNAL(triggered()), this, SLOT(clipboardAfterFee()));
     connect(clipboardBytesAction, SIGNAL(triggered()), this, SLOT(clipboardBytes()));
     connect(clipboardPriorityAction, SIGNAL(triggered()), this, SLOT(clipboardPriority()));
     connect(clipboardLowOutputAction, SIGNAL(triggered()), this, SLOT(clipboardLowOutput()));
     connect(clipboardChangeAction, SIGNAL(triggered()), this, SLOT(clipboardChange()));
 
     ui->labelCoinControlQuantity->addAction(clipboardQuantityAction);
     ui->labelCoinControlAmount->addAction(clipboardAmountAction);
     ui->labelCoinControlFee->addAction(clipboardFeeAction);
     ui->labelCoinControlAfterFee->addAction(clipboardAfterFeeAction);
     ui->labelCoinControlBytes->addAction(clipboardBytesAction);
     ui->labelCoinControlPriority->addAction(clipboardPriorityAction);
     ui->labelCoinControlLowOutput->addAction(clipboardLowOutputAction);
     ui->labelCoinControlChange->addAction(clipboardChangeAction);
 
     // toggle tree/list mode
     connect(ui->radioTreeMode, SIGNAL(toggled(bool)), this, SLOT(radioTreeMode(bool)));
     connect(ui->radioListMode, SIGNAL(toggled(bool)), this, SLOT(radioListMode(bool)));
 
     // click on checkbox
     connect(ui->treeWidget, SIGNAL(itemChanged(QTreeWidgetItem*, int)), this, SLOT(viewItemChanged(QTreeWidgetItem*, int)));
 
     // click on header
 #if QT_VERSION < 0x050000
     ui->treeWidget->header()->setClickable(true);
 #else
     ui->treeWidget->header()->setSectionsClickable(true);
 #endif
     connect(ui->treeWidget->header(), SIGNAL(sectionClicked(int)), this, SLOT(headerSectionClicked(int)));
 
     // ok button
     connect(ui->buttonBox, SIGNAL(clicked( QAbstractButton*)), this, SLOT(buttonBoxClicked(QAbstractButton*)));
 
     // (un)select all
     connect(ui->pushButtonSelectAll, SIGNAL(clicked()), this, SLOT(buttonSelectAllClicked()));
 
+    // change coin control first column label due Qt4 bug. 
+    // see https://github.com/bitcoin/bitcoin/issues/5716
+    ui->treeWidget->headerItem()->setText(COLUMN_CHECKBOX, QString());
+
     ui->treeWidget->setColumnWidth(COLUMN_CHECKBOX, 84);
     ui->treeWidget->setColumnWidth(COLUMN_AMOUNT, 100);
     ui->treeWidget->setColumnWidth(COLUMN_LABEL, 170);
     ui->treeWidget->setColumnWidth(COLUMN_ADDRESS, 290);
     ui->treeWidget->setColumnWidth(COLUMN_DATE, 110);
     ui->treeWidget->setColumnWidth(COLUMN_CONFIRMATIONS, 100);
     ui->treeWidget->setColumnWidth(COLUMN_PRIORITY, 100);
     ui->treeWidget->setColumnHidden(COLUMN_TXHASH, true);         // store transacton hash in this column, but dont show it
     ui->treeWidget->setColumnHidden(COLUMN_VOUT_INDEX, true);     // store vout index in this column, but dont show it
     ui->treeWidget->setColumnHidden(COLUMN_AMOUNT_INT64, true);   // store amount int64 in this column, but dont show it
     ui->treeWidget->setColumnHidden(COLUMN_PRIORITY_INT64, true); // store priority int64 in this column, but dont show it
     ui->treeWidget->setColumnHidden(COLUMN_DATE_INT64, true);     // store date int64 in this column, but dont show it
 
     // default view is sorted by amount desc
     sortView(COLUMN_AMOUNT_INT64, Qt::DescendingOrder);
 
     // restore list mode and sortorder as a convenience feature
     QSettings settings;
     if (settings.contains("nCoinControlMode") && !settings.value("nCoinControlMode").toBool())
         ui->radioTreeMode->click();
     if (settings.contains("nCoinControlSortColumn") && settings.contains("nCoinControlSortOrder"))
         sortView(settings.value("nCoinControlSortColumn").toInt(), ((Qt::SortOrder)settings.value("nCoinControlSortOrder").toInt()));
 }
 
 CoinControlDialog::~CoinControlDialog()
 {
     QSettings settings;
     settings.setValue("nCoinControlMode", ui->radioListMode->isChecked());
     settings.setValue("nCoinControlSortColumn", sortColumn);
     settings.setValue("nCoinControlSortOrder", (int)sortOrder);
 
     delete ui;
 }
 
 void CoinControlDialog::setModel(WalletModel *model)
 {
     this->model = model;
 
     if(model && model->getOptionsModel() && model->getAddressTableModel())
     {
         updateView();
         updateLabelLocked();
         CoinControlDialog::updateLabels(model, this);
     }
 }
 
 // helper function str_pad
 QString CoinControlDialog::strPad(QString s, int nPadLength, QString sPadding)
 {
     while (s.length() < nPadLength)
         s = sPadding + s;
 
     return s;
 }
 
 // ok button
 void CoinControlDialog::buttonBoxClicked(QAbstractButton* button)
 {
     if (ui->buttonBox->buttonRole(button) == QDialogButtonBox::AcceptRole)
         done(QDialog::Accepted); // closes the dialog
 }
 
 // (un)select all
 void CoinControlDialog::buttonSelectAllClicked()
 {
     Qt::CheckState state = Qt::Checked;
     for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
     {
         if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) != Qt::Unchecked)
         {
             state = Qt::Unchecked;
             break;
         }
     }
     ui->treeWidget->setEnabled(false);
     for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
             if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) != state)
                 ui->treeWidget->topLevelItem(i)->setCheckState(COLUMN_CHECKBOX, state);
     ui->treeWidget->setEnabled(true);
     if (state == Qt::Unchecked)
         coinControl->UnSelectAll(); // just to be sure
     CoinControlDialog::updateLabels(model, this);
 }
 
 // context menu
 void CoinControlDialog::showMenu(const QPoint &point)
 {
     QTreeWidgetItem *item = ui->treeWidget->itemAt(point);
     if(item)
     {
         contextMenuItem = item;
 
         // disable some items (like Copy Transaction ID, lock, unlock) for tree roots in context menu
         if (item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
         {
             copyTransactionHashAction->setEnabled(true);
             if (model->isLockedCoin(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt()))
             {
                 lockAction->setEnabled(false);
                 unlockAction->setEnabled(true);
             }
             else
             {
                 lockAction->setEnabled(true);
                 unlockAction->setEnabled(false);
             }
         }
         else // this means click on parent node in tree mode -> disable all
         {
             copyTransactionHashAction->setEnabled(false);
             lockAction->setEnabled(false);
             unlockAction->setEnabled(false);
         }
 
         // show context menu
         contextMenu->exec(QCursor::pos());
     }
 }
 
 // context menu action: copy amount
 void CoinControlDialog::copyAmount()
 {
     GUIUtil::setClipboard(BitcoinUnits::removeSpaces(contextMenuItem->text(COLUMN_AMOUNT)));
 }
 
 // context menu action: copy label
 void CoinControlDialog::copyLabel()
 {
     if (ui->radioTreeMode->isChecked() && contextMenuItem->text(COLUMN_LABEL).length() == 0 && contextMenuItem->parent())
         GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_LABEL));
     else
         GUIUtil::setClipboard(contextMenuItem->text(COLUMN_LABEL));
 }
 
 // context menu action: copy address
 void CoinControlDialog::copyAddress()
 {
     if (ui->radioTreeMode->isChecked() && contextMenuItem->text(COLUMN_ADDRESS).length() == 0 && contextMenuItem->parent())
         GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_ADDRESS));
     else
         GUIUtil::setClipboard(contextMenuItem->text(COLUMN_ADDRESS));
 }
 
 // context menu action: copy transaction id
 void CoinControlDialog::copyTransactionHash()
 {
     GUIUtil::setClipboard(contextMenuItem->text(COLUMN_TXHASH));
 }
 
 // context menu action: lock coin
 void CoinControlDialog::lockCoin()
 {
     if (contextMenuItem->checkState(COLUMN_CHECKBOX) == Qt::Checked)
         contextMenuItem->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 
     COutPoint outpt(uint256S(contextMenuItem->text(COLUMN_TXHASH).toStdString()), contextMenuItem->text(COLUMN_VOUT_INDEX).toUInt());
     model->lockCoin(outpt);
     contextMenuItem->setDisabled(true);
     contextMenuItem->setIcon(COLUMN_CHECKBOX, SingleColorIcon(":/icons/lock_closed"));
     updateLabelLocked();
 }
 
 // context menu action: unlock coin
 void CoinControlDialog::unlockCoin()
 {
     COutPoint outpt(uint256S(contextMenuItem->text(COLUMN_TXHASH).toStdString()), contextMenuItem->text(COLUMN_VOUT_INDEX).toUInt());
     model->unlockCoin(outpt);
     contextMenuItem->setDisabled(false);
     contextMenuItem->setIcon(COLUMN_CHECKBOX, QIcon());
     updateLabelLocked();
 }
 
 // copy label "Quantity" to clipboard
 void CoinControlDialog::clipboardQuantity()
 {
     GUIUtil::setClipboard(ui->labelCoinControlQuantity->text());
 }
 
 // copy label "Amount" to clipboard
 void CoinControlDialog::clipboardAmount()
 {
     GUIUtil::setClipboard(ui->labelCoinControlAmount->text().left(ui->labelCoinControlAmount->text().indexOf(" ")));
 }
 
 // copy label "Fee" to clipboard
 void CoinControlDialog::clipboardFee()
 {
     GUIUtil::setClipboard(ui->labelCoinControlFee->text().left(ui->labelCoinControlFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 }
 
 // copy label "After fee" to clipboard
 void CoinControlDialog::clipboardAfterFee()
 {
     GUIUtil::setClipboard(ui->labelCoinControlAfterFee->text().left(ui->labelCoinControlAfterFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 }
 
 // copy label "Bytes" to clipboard
 void CoinControlDialog::clipboardBytes()
 {
     GUIUtil::setClipboard(ui->labelCoinControlBytes->text().replace(ASYMP_UTF8, ""));
 }
 
 // copy label "Priority" to clipboard
 void CoinControlDialog::clipboardPriority()
 {
     GUIUtil::setClipboard(ui->labelCoinControlPriority->text());
 }
 
 // copy label "Dust" to clipboard
 void CoinControlDialog::clipboardLowOutput()
 {
     GUIUtil::setClipboard(ui->labelCoinControlLowOutput->text());
 }
 
 // copy label "Change" to clipboard
 void CoinControlDialog::clipboardChange()
 {
     GUIUtil::setClipboard(ui->labelCoinControlChange->text().left(ui->labelCoinControlChange->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 }
 
 // treeview: sort
 void CoinControlDialog::sortView(int column, Qt::SortOrder order)
 {
     sortColumn = column;
     sortOrder = order;
     ui->treeWidget->sortItems(column, order);
     ui->treeWidget->header()->setSortIndicator(getMappedColumn(sortColumn), sortOrder);
 }
 
 // treeview: clicked on header
 void CoinControlDialog::headerSectionClicked(int logicalIndex)
 {
     if (logicalIndex == COLUMN_CHECKBOX) // click on most left column -> do nothing
     {
         ui->treeWidget->header()->setSortIndicator(getMappedColumn(sortColumn), sortOrder);
     }
     else
     {
         logicalIndex = getMappedColumn(logicalIndex, false);
 
         if (sortColumn == logicalIndex)
             sortOrder = ((sortOrder == Qt::AscendingOrder) ? Qt::DescendingOrder : Qt::AscendingOrder);
         else
         {
             sortColumn = logicalIndex;
             sortOrder = ((sortColumn == COLUMN_LABEL || sortColumn == COLUMN_ADDRESS) ? Qt::AscendingOrder : Qt::DescendingOrder); // if label or address then default => asc, else default => desc
         }
 
         sortView(sortColumn, sortOrder);
     }
 }
 
 // toggle tree mode
 void CoinControlDialog::radioTreeMode(bool checked)
 {
     if (checked && model)
         updateView();
 }
 
 // toggle list mode
 void CoinControlDialog::radioListMode(bool checked)
 {
     if (checked && model)
         updateView();
 }
 
 // checkbox clicked by user
 void CoinControlDialog::viewItemChanged(QTreeWidgetItem* item, int column)
 {
     if (column == COLUMN_CHECKBOX && item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
     {
         COutPoint outpt(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt());
 
         if (item->checkState(COLUMN_CHECKBOX) == Qt::Unchecked)
             coinControl->UnSelect(outpt);
         else if (item->isDisabled()) // locked (this happens if "check all" through parent node)
             item->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
         else
             coinControl->Select(outpt);
 
         // selection changed -> update labels
         if (ui->treeWidget->isEnabled()) // do not update on every click for (un)select all
             CoinControlDialog::updateLabels(model, this);
     }
 
     // todo: this is a temporary qt5 fix: when clicking a parent node in tree mode, the parent node
     //       including all childs are partially selected. But the parent node should be fully selected
     //       as well as the childs. Childs should never be partially selected in the first place.
     //       Please remove this ugly fix, once the bug is solved upstream.
 #if QT_VERSION >= 0x050000
     else if (column == COLUMN_CHECKBOX && item->childCount() > 0)
     {
         if (item->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked && item->child(0)->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked)
             item->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
     }
 #endif
 }
 
 // return human readable label for priority number
 QString CoinControlDialog::getPriorityLabel(double dPriority, double mempoolEstimatePriority)
 {
     double dPriorityMedium = mempoolEstimatePriority;
 
     if (dPriorityMedium <= 0)
         dPriorityMedium = AllowFreeThreshold(); // not enough data, back to hard-coded
 
     if      (dPriority / 1000000 > dPriorityMedium) return tr("highest");
     else if (dPriority / 100000 > dPriorityMedium)  return tr("higher");
     else if (dPriority / 10000 > dPriorityMedium)   return tr("high");
     else if (dPriority / 1000 > dPriorityMedium)    return tr("medium-high");
     else if (dPriority > dPriorityMedium)           return tr("medium");
     else if (dPriority * 10 > dPriorityMedium)      return tr("low-medium");
     else if (dPriority * 100 > dPriorityMedium)     return tr("low");
     else if (dPriority * 1000 > dPriorityMedium)    return tr("lower");
     else                                            return tr("lowest");
 }
 
 // shows count of locked unspent outputs
 void CoinControlDialog::updateLabelLocked()
 {
     vector<COutPoint> vOutpts;
     model->listLockedCoins(vOutpts);
     if (vOutpts.size() > 0)
     {
        ui->labelLocked->setText(tr("(%1 locked)").arg(vOutpts.size()));
        ui->labelLocked->setVisible(true);
     }
     else ui->labelLocked->setVisible(false);
 }
 
 void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
 {
     if (!model)
         return;
 
     // nPayAmount
     CAmount nPayAmount = 0;
     bool fDust = false;
     CMutableTransaction txDummy;
     foreach(const CAmount &amount, CoinControlDialog::payAmounts)
     {
         nPayAmount += amount;
 
         if (amount > 0)
         {
             CTxOut txout(amount, (CScript)vector<unsigned char>(24, 0));
             txDummy.vout.push_back(txout);
             if (txout.IsDust(::minRelayTxFee))
                fDust = true;
         }
     }
 
     QString sPriorityLabel      = tr("none");
     CAmount nAmount             = 0;
     CAmount nPayFee             = 0;
     CAmount nAfterFee           = 0;
     CAmount nChange             = 0;
     unsigned int nBytes         = 0;
     unsigned int nBytesInputs   = 0;
     double dPriority            = 0;
     double dPriorityInputs      = 0;
     unsigned int nQuantity      = 0;
     int nQuantityUncompressed   = 0;
     bool fAllowFree             = false;
 
     vector<COutPoint> vCoinControl;
     vector<COutput>   vOutputs;
     coinControl->ListSelected(vCoinControl);
     model->getOutputs(vCoinControl, vOutputs);
 
     BOOST_FOREACH(const COutput& out, vOutputs)
     {
         // unselect already spent, very unlikely scenario, this could happen
         // when selected are spent elsewhere, like rpc or another computer
         uint256 txhash = out.tx->GetHash();
         COutPoint outpt(txhash, out.i);
         if (model->isSpent(outpt))
         {
             coinControl->UnSelect(outpt);
             continue;
         }
 
         // Quantity
         nQuantity++;
 
         // Amount
         nAmount += out.tx->vout[out.i].nValue;
 
         // Priority
         dPriorityInputs += (double)out.tx->vout[out.i].nValue * (out.nDepth+1);
 
         // Bytes
         CTxDestination address;
         if(ExtractDestination(out.tx->vout[out.i].scriptPubKey, address))
         {
             CPubKey pubkey;
             CKeyID *keyid = boost::get<CKeyID>(&address);
             if (keyid && model->getPubKey(*keyid, pubkey))
             {
                 nBytesInputs += (pubkey.IsCompressed() ? 148 : 180);
                 if (!pubkey.IsCompressed())
                     nQuantityUncompressed++;
             }
             else
                 nBytesInputs += 148; // in all error cases, simply assume 148 here
         }
         else nBytesInputs += 148;
     }
 
     // calculation
     if (nQuantity > 0)
     {
         // Bytes
         nBytes = nBytesInputs + ((CoinControlDialog::payAmounts.size() > 0 ? CoinControlDialog::payAmounts.size() + 1 : 2) * 34) + 10; // always assume +1 output for change here
 
         // Priority
         double mempoolEstimatePriority = mempool.estimatePriority(nTxConfirmTarget);
         dPriority = dPriorityInputs / (nBytes - nBytesInputs + (nQuantityUncompressed * 29)); // 29 = 180 - 151 (uncompressed public keys are over the limit. max 151 bytes of the input are ignored for priority)
         sPriorityLabel = CoinControlDialog::getPriorityLabel(dPriority, mempoolEstimatePriority);
 
         // Fee
         nPayFee = CWallet::GetMinimumFee(nBytes, nTxConfirmTarget, mempool);
 
         // Allow free?
         double dPriorityNeeded = mempoolEstimatePriority;
         if (dPriorityNeeded <= 0)
             dPriorityNeeded = AllowFreeThreshold(); // not enough data, back to hard-coded
         fAllowFree = (dPriority >= dPriorityNeeded);
 
         if (fSendFreeTransactions)
             if (fAllowFree && nBytes <= MAX_FREE_TRANSACTION_CREATE_SIZE)
                 nPayFee = 0;
 
         if (nPayAmount > 0)
         {
             nChange = nAmount - nPayFee - nPayAmount;
 
             // Never create dust outputs; if we would, just add the dust to the fee.
             if (nChange > 0 && nChange < CENT)
             {
                 CTxOut txout(nChange, (CScript)vector<unsigned char>(24, 0));
                 if (txout.IsDust(::minRelayTxFee))
                 {
                     nPayFee += nChange;
                     nChange = 0;
                 }
             }
 
             if (nChange == 0)
                 nBytes -= 34;
         }
 
         // after fee
         nAfterFee = nAmount - nPayFee;
         if (nAfterFee < 0)
             nAfterFee = 0;
     }
 
     // actually update labels
     int nDisplayUnit = BitcoinUnits::BTC;
     if (model && model->getOptionsModel())
         nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
 
     QLabel *l1 = dialog->findChild<QLabel *>("labelCoinControlQuantity");
     QLabel *l2 = dialog->findChild<QLabel *>("labelCoinControlAmount");
     QLabel *l3 = dialog->findChild<QLabel *>("labelCoinControlFee");
     QLabel *l4 = dialog->findChild<QLabel *>("labelCoinControlAfterFee");
     QLabel *l5 = dialog->findChild<QLabel *>("labelCoinControlBytes");
     QLabel *l6 = dialog->findChild<QLabel *>("labelCoinControlPriority");
     QLabel *l7 = dialog->findChild<QLabel *>("labelCoinControlLowOutput");
     QLabel *l8 = dialog->findChild<QLabel *>("labelCoinControlChange");
 
     // enable/disable "dust" and "change"
     dialog->findChild<QLabel *>("labelCoinControlLowOutputText")->setEnabled(nPayAmount > 0);
     dialog->findChild<QLabel *>("labelCoinControlLowOutput")    ->setEnabled(nPayAmount > 0);
     dialog->findChild<QLabel *>("labelCoinControlChangeText")   ->setEnabled(nPayAmount > 0);
     dialog->findChild<QLabel *>("labelCoinControlChange")       ->setEnabled(nPayAmount > 0);
 
     // stats
     l1->setText(QString::number(nQuantity));                                 // Quantity
     l2->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAmount));        // Amount
     l3->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nPayFee));        // Fee
     l4->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAfterFee));      // After Fee
     l5->setText(((nBytes > 0) ? ASYMP_UTF8 : "") + QString::number(nBytes));        // Bytes
     l6->setText(sPriorityLabel);                                             // Priority
     l7->setText(fDust ? tr("yes") : tr("no"));                               // Dust
     l8->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nChange));        // Change
     if (nPayFee > 0 && !(payTxFee.GetFeePerK() > 0 && fPayAtLeastCustomFee && nBytes < 1000))
     {
         l3->setText(ASYMP_UTF8 + l3->text());
         l4->setText(ASYMP_UTF8 + l4->text());
         if (nChange > 0)
             l8->setText(ASYMP_UTF8 + l8->text());
     }
 
     // turn labels "red"
     l5->setStyleSheet((nBytes >= MAX_FREE_TRANSACTION_CREATE_SIZE) ? "color:red;" : "");// Bytes >= 1000
     l6->setStyleSheet((dPriority > 0 && !fAllowFree) ? "color:red;" : "");              // Priority < "medium"
     l7->setStyleSheet((fDust) ? "color:red;" : "");                                     // Dust = "yes"
 
     // tool tips
     QString toolTip1 = tr("This label turns red, if the transaction size is greater than 1000 bytes.") + "<br /><br />";
     toolTip1 += tr("This means a fee of at least %1 per kB is required.").arg(BitcoinUnits::formatWithUnit(nDisplayUnit, CWallet::minTxFee.GetFeePerK())) + "<br /><br />";
     toolTip1 += tr("Can vary +/- 1 byte per input.");
 
     QString toolTip2 = tr("Transactions with higher priority are more likely to get included into a block.") + "<br /><br />";
     toolTip2 += tr("This label turns red, if the priority is smaller than \"medium\".") + "<br /><br />";
     toolTip2 += tr("This means a fee of at least %1 per kB is required.").arg(BitcoinUnits::formatWithUnit(nDisplayUnit, CWallet::minTxFee.GetFeePerK()));
 
     QString toolTip3 = tr("This label turns red, if any recipient receives an amount smaller than %1.").arg(BitcoinUnits::formatWithUnit(nDisplayUnit, ::minRelayTxFee.GetFee(546)));
 
     // how many satoshis the estimated fee can vary per byte we guess wrong
     double dFeeVary;
     if (payTxFee.GetFeePerK() > 0)
         dFeeVary = (double)std::max(CWallet::minTxFee.GetFeePerK(), payTxFee.GetFeePerK()) / 1000;
     else
         dFeeVary = (double)std::max(CWallet::minTxFee.GetFeePerK(), mempool.estimateFee(nTxConfirmTarget).GetFeePerK()) / 1000;
     QString toolTip4 = tr("Can vary +/- %1 satoshi(s) per input.").arg(dFeeVary);
 
     l3->setToolTip(toolTip4);
     l4->setToolTip(toolTip4);
     l5->setToolTip(toolTip1);
     l6->setToolTip(toolTip2);
     l7->setToolTip(toolTip3);
     l8->setToolTip(toolTip4);
     dialog->findChild<QLabel *>("labelCoinControlFeeText")      ->setToolTip(l3->toolTip());
     dialog->findChild<QLabel *>("labelCoinControlAfterFeeText") ->setToolTip(l4->toolTip());
     dialog->findChild<QLabel *>("labelCoinControlBytesText")    ->setToolTip(l5->toolTip());
     dialog->findChild<QLabel *>("labelCoinControlPriorityText") ->setToolTip(l6->toolTip());
     dialog->findChild<QLabel *>("labelCoinControlLowOutputText")->setToolTip(l7->toolTip());
     dialog->findChild<QLabel *>("labelCoinControlChangeText")   ->setToolTip(l8->toolTip());
 
     // Insufficient funds
     QLabel *label = dialog->findChild<QLabel *>("labelCoinControlInsuffFunds");
     if (label)
         label->setVisible(nChange < 0);
 }
 
 void CoinControlDialog::updateView()
 {
     if (!model || !model->getOptionsModel() || !model->getAddressTableModel())
         return;
 
     bool treeMode = ui->radioTreeMode->isChecked();
 
     ui->treeWidget->clear();
     ui->treeWidget->setEnabled(false); // performance, otherwise updateLabels would be called for every checked checkbox
     ui->treeWidget->setAlternatingRowColors(!treeMode);
     QFlags<Qt::ItemFlag> flgCheckbox = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable;
     QFlags<Qt::ItemFlag> flgTristate = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable | Qt::ItemIsTristate;
 
     int nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
     double mempoolEstimatePriority = mempool.estimatePriority(nTxConfirmTarget);
 
     map<QString, vector<COutput> > mapCoins;
     model->listCoins(mapCoins);
 
     BOOST_FOREACH(PAIRTYPE(QString, vector<COutput>) coins, mapCoins)
     {
         QTreeWidgetItem *itemWalletAddress = new QTreeWidgetItem();
         itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
         QString sWalletAddress = coins.first;
         QString sWalletLabel = model->getAddressTableModel()->labelForAddress(sWalletAddress);
         if (sWalletLabel.isEmpty())
             sWalletLabel = tr("(no label)");
 
         if (treeMode)
         {
             // wallet address
             ui->treeWidget->addTopLevelItem(itemWalletAddress);
 
             itemWalletAddress->setFlags(flgTristate);
             itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 
             // label
             itemWalletAddress->setText(COLUMN_LABEL, sWalletLabel);
 
             // address
             itemWalletAddress->setText(COLUMN_ADDRESS, sWalletAddress);
         }
 
         CAmount nSum = 0;
         double dPrioritySum = 0;
         int nChildren = 0;
         int nInputSum = 0;
         BOOST_FOREACH(const COutput& out, coins.second)
         {
             int nInputSize = 0;
             nSum += out.tx->vout[out.i].nValue;
             nChildren++;
 
             QTreeWidgetItem *itemOutput;
             if (treeMode)    itemOutput = new QTreeWidgetItem(itemWalletAddress);
             else             itemOutput = new QTreeWidgetItem(ui->treeWidget);
             itemOutput->setFlags(flgCheckbox);
             itemOutput->setCheckState(COLUMN_CHECKBOX,Qt::Unchecked);
 
             // address
             CTxDestination outputAddress;
             QString sAddress = "";
             if(ExtractDestination(out.tx->vout[out.i].scriptPubKey, outputAddress))
             {
                 sAddress = QString::fromStdString(CBitcoinAddress(outputAddress).ToString());
 
                 // if listMode or change => show bitcoin address. In tree mode, address is not shown again for direct wallet address outputs
                 if (!treeMode || (!(sAddress == sWalletAddress)))
                     itemOutput->setText(COLUMN_ADDRESS, sAddress);
 
                 CPubKey pubkey;
                 CKeyID *keyid = boost::get<CKeyID>(&outputAddress);
                 if (keyid && model->getPubKey(*keyid, pubkey) && !pubkey.IsCompressed())
                     nInputSize = 29; // 29 = 180 - 151 (public key is 180 bytes, priority free area is 151 bytes)
             }
 
             // label
             if (!(sAddress == sWalletAddress)) // change
             {
                 // tooltip from where the change comes from
                 itemOutput->setToolTip(COLUMN_LABEL, tr("change from %1 (%2)").arg(sWalletLabel).arg(sWalletAddress));
                 itemOutput->setText(COLUMN_LABEL, tr("(change)"));
             }
             else if (!treeMode)
             {
                 QString sLabel = model->getAddressTableModel()->labelForAddress(sAddress);
                 if (sLabel.isEmpty())
                     sLabel = tr("(no label)");
                 itemOutput->setText(COLUMN_LABEL, sLabel);
             }
 
             // amount
             itemOutput->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, out.tx->vout[out.i].nValue));
             itemOutput->setText(COLUMN_AMOUNT_INT64, strPad(QString::number(out.tx->vout[out.i].nValue), 15, " ")); // padding so that sorting works correctly
 
             // date
             itemOutput->setText(COLUMN_DATE, GUIUtil::dateTimeStr(out.tx->GetTxTime()));
             itemOutput->setText(COLUMN_DATE_INT64, strPad(QString::number(out.tx->GetTxTime()), 20, " "));
 
             // confirmations
             itemOutput->setText(COLUMN_CONFIRMATIONS, strPad(QString::number(out.nDepth), 8, " "));
 
             // priority
             double dPriority = ((double)out.tx->vout[out.i].nValue  / (nInputSize + 78)) * (out.nDepth+1); // 78 = 2 * 34 + 10
             itemOutput->setText(COLUMN_PRIORITY, CoinControlDialog::getPriorityLabel(dPriority, mempoolEstimatePriority));
             itemOutput->setText(COLUMN_PRIORITY_INT64, strPad(QString::number((int64_t)dPriority), 20, " "));
             dPrioritySum += (double)out.tx->vout[out.i].nValue  * (out.nDepth+1);
             nInputSum    += nInputSize;
 
             // transaction hash
             uint256 txhash = out.tx->GetHash();
             itemOutput->setText(COLUMN_TXHASH, QString::fromStdString(txhash.GetHex()));
 
             // vout index
             itemOutput->setText(COLUMN_VOUT_INDEX, QString::number(out.i));
 
              // disable locked coins
             if (model->isLockedCoin(txhash, out.i))
             {
                 COutPoint outpt(txhash, out.i);
                 coinControl->UnSelect(outpt); // just to be sure
                 itemOutput->setDisabled(true);
                 itemOutput->setIcon(COLUMN_CHECKBOX, SingleColorIcon(":/icons/lock_closed"));
             }
 
             // set checkbox
             if (coinControl->IsSelected(txhash, out.i))
                 itemOutput->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
         }
 
         // amount
         if (treeMode)
         {
             dPrioritySum = dPrioritySum / (nInputSum + 78);
             itemWalletAddress->setText(COLUMN_CHECKBOX, "(" + QString::number(nChildren) + ")");
             itemWalletAddress->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, nSum));
             itemWalletAddress->setText(COLUMN_AMOUNT_INT64, strPad(QString::number(nSum), 15, " "));
             itemWalletAddress->setText(COLUMN_PRIORITY, CoinControlDialog::getPriorityLabel(dPrioritySum, mempoolEstimatePriority));
             itemWalletAddress->setText(COLUMN_PRIORITY_INT64, strPad(QString::number((int64_t)dPrioritySum), 20, " "));
         }
     }
 
     // expand all partially selected
     if (treeMode)
     {
         for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
             if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked)
                 ui->treeWidget->topLevelItem(i)->setExpanded(true);
     }
 
     // sort view
     sortView(sortColumn, sortOrder);
     ui->treeWidget->setEnabled(true);
 }