diff --git a/src/qt/addressbookpage.cpp b/src/qt/addressbookpage.cpp
index 58cf4dede..6076837fd 100644
--- a/src/qt/addressbookpage.cpp
+++ b/src/qt/addressbookpage.cpp
@@ -83,7 +83,7 @@ AddressBookPage::AddressBookPage(const PlatformStyle *platformStyle, Mode _mode,
     deleteAction = new QAction(ui->deleteAddress->text(), this);
 
     // Build context menu
-    contextMenu = new QMenu();
+    contextMenu = new QMenu(this);
     contextMenu->addAction(copyAddressAction);
     contextMenu->addAction(copyLabelAction);
     contextMenu->addAction(editAction);
diff --git a/src/qt/bantablemodel.cpp b/src/qt/bantablemodel.cpp
index 6e11e2390..fe53d89ba 100644
--- a/src/qt/bantablemodel.cpp
+++ b/src/qt/bantablemodel.cpp
@@ -87,7 +87,7 @@ BanTableModel::BanTableModel(ClientModel *parent) :
     clientModel(parent)
 {
     columns << tr("IP/Netmask") << tr("Banned Until");
-    priv = new BanTablePriv();
+    priv.reset(new BanTablePriv());
     // default to unsorted
     priv->sortColumn = -1;
 
@@ -95,6 +95,11 @@ BanTableModel::BanTableModel(ClientModel *parent) :
     refresh();
 }
 
+BanTableModel::~BanTableModel()
+{
+    // Intentionally left empty
+}
+
 int BanTableModel::rowCount(const QModelIndex &parent) const
 {
     Q_UNUSED(parent);
diff --git a/src/qt/bantablemodel.h b/src/qt/bantablemodel.h
index fe9600ac0..3c03d05c0 100644
--- a/src/qt/bantablemodel.h
+++ b/src/qt/bantablemodel.h
@@ -40,6 +40,7 @@ class BanTableModel : public QAbstractTableModel
 
 public:
     explicit BanTableModel(ClientModel *parent = 0);
+    ~BanTableModel();
     void startAutoRefresh();
     void stopAutoRefresh();
 
@@ -66,7 +67,7 @@ public Q_SLOTS:
 private:
     ClientModel *clientModel;
     QStringList columns;
-    BanTablePriv *priv;
+    std::unique_ptr<BanTablePriv> priv;
 };
 
 #endif // BITCOIN_QT_BANTABLEMODEL_H
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index b2c9a704e..4d78fd13c 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -1185,7 +1185,7 @@ void UnitDisplayStatusBarControl::mousePressEvent(QMouseEvent *event)
 /** Creates context menu, its actions, and wires up all the relevant signals for mouse events. */
 void UnitDisplayStatusBarControl::createContextMenu()
 {
-    menu = new QMenu();
+    menu = new QMenu(this);
     Q_FOREACH(BitcoinUnits::Unit u, BitcoinUnits::availableUnits())
     {
         QAction *menuAction = new QAction(QString(BitcoinUnits::name(u)), this);
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index 1a1671f0e..20c8fc845 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -52,7 +52,7 @@ CoinControlDialog::CoinControlDialog(const PlatformStyle *_platformStyle, QWidge
              unlockAction = new QAction(tr("Unlock unspent"), this);                    // we need to enable/disable this
 
     // context menu
-    contextMenu = new QMenu();
+    contextMenu = new QMenu(this);
     contextMenu->addAction(copyAddressAction);
     contextMenu->addAction(copyLabelAction);
     contextMenu->addAction(copyAmountAction);
diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
index 9dc75c2e1..130cfc6e7 100644
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -585,7 +585,8 @@ void TableViewLastColumnResizingFixer::on_geometriesChanged()
  * Initializes all internal variables and prepares the
  * the resize modes of the last 2 columns of the table and
  */
-TableViewLastColumnResizingFixer::TableViewLastColumnResizingFixer(QTableView* table, int lastColMinimumWidth, int allColsMinimumWidth) :
+TableViewLastColumnResizingFixer::TableViewLastColumnResizingFixer(QTableView* table, int lastColMinimumWidth, int allColsMinimumWidth, QObject *parent) :
+    QObject(parent),
     tableView(table),
     lastColumnMinimumWidth(lastColMinimumWidth),
     allColumnsMinimumWidth(allColsMinimumWidth)
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index 64cbd51eb..8f1f3fbb2 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -149,7 +149,7 @@ namespace GUIUtil
         Q_OBJECT
 
         public:
-            TableViewLastColumnResizingFixer(QTableView* table, int lastColMinimumWidth, int allColsMinimumWidth);
+            TableViewLastColumnResizingFixer(QTableView* table, int lastColMinimumWidth, int allColsMinimumWidth, QObject *parent);
             void stretchColumnWidth(int column);
 
         private:
diff --git a/src/qt/overviewpage.cpp b/src/qt/overviewpage.cpp
index 7ccdb89c0..ea1bb2fc9 100644
--- a/src/qt/overviewpage.cpp
+++ b/src/qt/overviewpage.cpp
@@ -25,8 +25,8 @@ class TxViewDelegate : public QAbstractItemDelegate
 {
     Q_OBJECT
 public:
-    TxViewDelegate(const PlatformStyle *_platformStyle):
-        QAbstractItemDelegate(), unit(BitcoinUnits::BTC),
+    TxViewDelegate(const PlatformStyle *_platformStyle, QObject *parent=nullptr):
+        QAbstractItemDelegate(parent), unit(BitcoinUnits::BTC),
         platformStyle(_platformStyle)
     {
 
@@ -119,8 +119,7 @@ OverviewPage::OverviewPage(const PlatformStyle *platformStyle, QWidget *parent)
     currentWatchOnlyBalance(-1),
     currentWatchUnconfBalance(-1),
     currentWatchImmatureBalance(-1),
-    txdelegate(new TxViewDelegate(platformStyle)),
-    filter(0)
+    txdelegate(new TxViewDelegate(platformStyle, this))
 {
     ui->setupUi(this);
 
@@ -220,7 +219,7 @@ void OverviewPage::setWalletModel(WalletModel *model)
     if(model && model->getOptionsModel())
     {
         // Set up transaction list
-        filter = new TransactionFilterProxy();
+        filter.reset(new TransactionFilterProxy());
         filter->setSourceModel(model->getTransactionTableModel());
         filter->setLimit(NUM_ITEMS);
         filter->setDynamicSortFilter(true);
@@ -228,7 +227,7 @@ void OverviewPage::setWalletModel(WalletModel *model)
         filter->setShowInactive(false);
         filter->sort(TransactionTableModel::Date, Qt::DescendingOrder);
 
-        ui->listTransactions->setModel(filter);
+        ui->listTransactions->setModel(filter.get());
         ui->listTransactions->setModelColumn(TransactionTableModel::ToAddress);
 
         // Keep up to date with wallet
diff --git a/src/qt/overviewpage.h b/src/qt/overviewpage.h
index 65cd3341b..ffe0de328 100644
--- a/src/qt/overviewpage.h
+++ b/src/qt/overviewpage.h
@@ -8,6 +8,7 @@
 #include "amount.h"
 
 #include <QWidget>
+#include <memory>
 
 class ClientModel;
 class TransactionFilterProxy;
@@ -56,7 +57,7 @@ private:
     CAmount currentWatchImmatureBalance;
 
     TxViewDelegate *txdelegate;
-    TransactionFilterProxy *filter;
+    std::unique_ptr<TransactionFilterProxy> filter;
 
 private Q_SLOTS:
     void updateDisplayUnit();
diff --git a/src/qt/peertablemodel.cpp b/src/qt/peertablemodel.cpp
index a2f9471fc..c0b490028 100644
--- a/src/qt/peertablemodel.cpp
+++ b/src/qt/peertablemodel.cpp
@@ -114,12 +114,12 @@ PeerTableModel::PeerTableModel(ClientModel *parent) :
     timer(0)
 {
     columns << tr("NodeId") << tr("Node/Service") << tr("User Agent") << tr("Ping");
-    priv = new PeerTablePriv();
+    priv.reset(new PeerTablePriv());
     // default to unsorted
     priv->sortColumn = -1;
 
     // set up timer for auto refresh
-    timer = new QTimer();
+    timer = new QTimer(this);
     connect(timer, SIGNAL(timeout()), SLOT(refresh()));
     timer->setInterval(MODEL_UPDATE_DELAY);
 
@@ -127,6 +127,11 @@ PeerTableModel::PeerTableModel(ClientModel *parent) :
     refresh();
 }
 
+PeerTableModel::~PeerTableModel()
+{
+    // Intentionally left empty
+}
+
 void PeerTableModel::startAutoRefresh()
 {
     timer->start();
diff --git a/src/qt/peertablemodel.h b/src/qt/peertablemodel.h
index a4f7bbdb3..af34b147b 100644
--- a/src/qt/peertablemodel.h
+++ b/src/qt/peertablemodel.h
@@ -46,6 +46,7 @@ class PeerTableModel : public QAbstractTableModel
 
 public:
     explicit PeerTableModel(ClientModel *parent = 0);
+    ~PeerTableModel();
     const CNodeCombinedStats *getNodeStats(int idx);
     int getRowByNodeId(NodeId nodeid);
     void startAutoRefresh();
@@ -75,7 +76,7 @@ public Q_SLOTS:
 private:
     ClientModel *clientModel;
     QStringList columns;
-    PeerTablePriv *priv;
+    std::unique_ptr<PeerTablePriv> priv;
     QTimer *timer;
 };
 
diff --git a/src/qt/receivecoinsdialog.cpp b/src/qt/receivecoinsdialog.cpp
index b50cad497..dd83547a9 100644
--- a/src/qt/receivecoinsdialog.cpp
+++ b/src/qt/receivecoinsdialog.cpp
@@ -25,6 +25,7 @@
 ReceiveCoinsDialog::ReceiveCoinsDialog(const PlatformStyle *_platformStyle, QWidget *parent) :
     QDialog(parent),
     ui(new Ui::ReceiveCoinsDialog),
+    columnResizingFixer(0),
     model(0),
     platformStyle(_platformStyle)
 {
@@ -49,7 +50,7 @@ ReceiveCoinsDialog::ReceiveCoinsDialog(const PlatformStyle *_platformStyle, QWid
     QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
 
     // context menu
-    contextMenu = new QMenu();
+    contextMenu = new QMenu(this);
     contextMenu->addAction(copyURIAction);
     contextMenu->addAction(copyLabelAction);
     contextMenu->addAction(copyMessageAction);
@@ -91,7 +92,7 @@ void ReceiveCoinsDialog::setModel(WalletModel *_model)
             SIGNAL(selectionChanged(QItemSelection, QItemSelection)), this,
             SLOT(recentRequestsView_selectionChanged(QItemSelection, QItemSelection)));
         // Last 2 columns are set by the columnResizingFixer, when the table geometry is ready.
-        columnResizingFixer = new GUIUtil::TableViewLastColumnResizingFixer(tableView, AMOUNT_MINIMUM_COLUMN_WIDTH, DATE_COLUMN_WIDTH);
+        columnResizingFixer = new GUIUtil::TableViewLastColumnResizingFixer(tableView, AMOUNT_MINIMUM_COLUMN_WIDTH, DATE_COLUMN_WIDTH, this);
     }
 }
 
diff --git a/src/qt/receiverequestdialog.cpp b/src/qt/receiverequestdialog.cpp
index 998c9176d..f89646173 100644
--- a/src/qt/receiverequestdialog.cpp
+++ b/src/qt/receiverequestdialog.cpp
@@ -32,7 +32,7 @@
 QRImageWidget::QRImageWidget(QWidget *parent):
     QLabel(parent), contextMenu(0)
 {
-    contextMenu = new QMenu();
+    contextMenu = new QMenu(this);
     QAction *saveImageAction = new QAction(tr("&Save Image..."), this);
     connect(saveImageAction, SIGNAL(triggered()), this, SLOT(saveImage()));
     contextMenu->addAction(saveImageAction);
diff --git a/src/qt/recentrequeststablemodel.cpp b/src/qt/recentrequeststablemodel.cpp
index 2335d6b28..35d37bb22 100644
--- a/src/qt/recentrequeststablemodel.cpp
+++ b/src/qt/recentrequeststablemodel.cpp
@@ -14,7 +14,7 @@
 #include <boost/foreach.hpp>
 
 RecentRequestsTableModel::RecentRequestsTableModel(CWallet *wallet, WalletModel *parent) :
-    walletModel(parent)
+    QAbstractTableModel(parent), walletModel(parent)
 {
     Q_UNUSED(wallet);
     nReceiveRequestsMaxId = 0;
diff --git a/src/qt/rpcconsole.cpp b/src/qt/rpcconsole.cpp
index 47af6a572..7f5bb29f1 100644
--- a/src/qt/rpcconsole.cpp
+++ b/src/qt/rpcconsole.cpp
@@ -486,7 +486,7 @@ void RPCConsole::setClientModel(ClientModel *model)
         QAction* banAction365d    = new QAction(tr("Ban for") + " " + tr("1 &year"), this);
 
         // create peer table context menu
-        peersTableContextMenu = new QMenu();
+        peersTableContextMenu = new QMenu(this);
         peersTableContextMenu->addAction(disconnectAction);
         peersTableContextMenu->addAction(banAction1h);
         peersTableContextMenu->addAction(banAction24h);
@@ -534,7 +534,7 @@ void RPCConsole::setClientModel(ClientModel *model)
         QAction* unbanAction = new QAction(tr("&Unban"), this);
 
         // create ban table context menu
-        banTableContextMenu = new QMenu();
+        banTableContextMenu = new QMenu(this);
         banTableContextMenu->addAction(unbanAction);
 
         // ban table context menu signals
diff --git a/src/qt/transactionview.cpp b/src/qt/transactionview.cpp
index 856b16d2c..f5cbde623 100644
--- a/src/qt/transactionview.cpp
+++ b/src/qt/transactionview.cpp
@@ -37,7 +37,7 @@
 
 TransactionView::TransactionView(const PlatformStyle *platformStyle, QWidget *parent) :
     QWidget(parent), model(0), transactionProxyModel(0),
-    transactionView(0), abandonAction(0)
+    transactionView(0), abandonAction(0), columnResizingFixer(0)
 {
     // Build filter row
     setContentsMargins(0,0,0,0);
@@ -147,7 +147,7 @@ TransactionView::TransactionView(const PlatformStyle *platformStyle, QWidget *pa
     QAction *editLabelAction = new QAction(tr("Edit label"), this);
     QAction *showDetailsAction = new QAction(tr("Show transaction details"), this);
 
-    contextMenu = new QMenu();
+    contextMenu = new QMenu(this);
     contextMenu->addAction(copyAddressAction);
     contextMenu->addAction(copyLabelAction);
     contextMenu->addAction(copyAmountAction);
@@ -212,7 +212,7 @@ void TransactionView::setModel(WalletModel *_model)
         transactionView->setColumnWidth(TransactionTableModel::Type, TYPE_COLUMN_WIDTH);
         transactionView->setColumnWidth(TransactionTableModel::Amount, AMOUNT_MINIMUM_COLUMN_WIDTH);
 
-        columnResizingFixer = new GUIUtil::TableViewLastColumnResizingFixer(transactionView, AMOUNT_MINIMUM_COLUMN_WIDTH, MINIMUM_COLUMN_WIDTH);
+        columnResizingFixer = new GUIUtil::TableViewLastColumnResizingFixer(transactionView, AMOUNT_MINIMUM_COLUMN_WIDTH, MINIMUM_COLUMN_WIDTH, this);
 
         if (_model->getOptionsModel())
         {