自学教程：C++ transactionFeeChanged函数代码示例

void SendCoinsDialog::setModel(WalletModel *model){    this->model = model;    for(int i = 0; i < ui->entries->count(); ++i)    {        SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());        if(entry)        {            entry->setModel(model);        }    }    if(model && model->getOptionsModel())    {        setBalance(model->getBalance(), model->getUnconfirmedBalance(), model->getImmatureBalance());        connect(model, SIGNAL(balanceChanged(qint64, qint64, qint64)), this, SLOT(setBalance(qint64, qint64, qint64)));        connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(updateDisplayUnit()));        // Coin Control        connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(coinControlUpdateLabels()));        connect(model->getOptionsModel(), SIGNAL(coinControlFeaturesChanged(bool)), this, SLOT(coinControlFeatureChanged(bool)));        connect(model->getOptionsModel(), SIGNAL(transactionFeeChanged(qint64)), this, SLOT(coinControlUpdateLabels()));        ui->frameCoinControl->setVisible(model->getOptionsModel()->getCoinControlFeatures());        coinControlUpdateLabels();    }

void SendCoinsDialog::setModel(WalletModel *model){    this->model = model;    for(int i = 0; i < ui->entries->count(); ++i)    {        SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());		        CBitcoinAddress address = entry->getValue().address.toStdString();  				if(!model->isMine(address) && ui->splitBlockCheckBox->checkState() == Qt::Checked)  		{ 					model->setSplitBlock(false); //don't allow the blocks to split if sending to an outside address 			ui->splitBlockCheckBox->setCheckState(Qt::Unchecked);  			QMessageBox::warning(this, tr("Send Coins"),  				tr("The split block tool does not work when sending to outside addresses. Try again."),  				QMessageBox::Ok, QMessageBox::Ok);  			return;  		}        if(entry)        {            entry->setModel(model);        }    }    if(model && model->getOptionsModel())    {        setBalance(model->getBalance(), model->getStake(), model->getUnconfirmedBalance(), model->getImmatureBalance());        connect(model, SIGNAL(balanceChanged(qint64, qint64, qint64, qint64)), this, SLOT(setBalance(qint64, qint64, qint64, qint64)));        connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(updateDisplayUnit()));        // Coin Control        connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(coinControlUpdateLabels()));        connect(model->getOptionsModel(), SIGNAL(coinControlFeaturesChanged(bool)), this, SLOT(coinControlFeatureChanged(bool)));        connect(model->getOptionsModel(), SIGNAL(transactionFeeChanged(qint64)), this, SLOT(coinControlUpdateLabels()));        ui->frameCoinControl->setVisible(model->getOptionsModel()->getCoinControlFeatures());        coinControlUpdateLabels();    }

void SendCoinsDialog::setModel(WalletModel *model){    this->model = model;    if(model && model->getOptionsModel())    {        for(int i = 0; i < ui->entries->count(); ++i)        {            SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());            if(entry)            {                entry->setModel(model);            }        }        setBalance(model->getBalance(), model->getStake(), model->getUnconfirmedBalance(), model->getImmatureBalance(), model->getAnonymizedBalance(),        	model->getWatchBalance(), model->getWatchStake(), model->getWatchUnconfirmedBalance(), model->getWatchImmatureBalance());        connect(model, SIGNAL(balanceChanged(CAmount, CAmount, CAmount, CAmount, CAmount, CAmount, CAmount, CAmount, CAmount)), this, SLOT(setBalance(CAmount, CAmount, CAmount, CAmount, CAmount, CAmount, CAmount, CAmount, CAmount)));        connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(updateDisplayUnit()));        updateDisplayUnit();        // Coin Control        connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(coinControlUpdateLabels()));        connect(model->getOptionsModel(), SIGNAL(coinControlFeaturesChanged(bool)), this, SLOT(coinControlFeatureChanged(bool)));        connect(model->getOptionsModel(), SIGNAL(transactionFeeChanged(CAmount)), this, SLOT(coinControlUpdateLabels()));        ui->frameCoinControl->setVisible(model->getOptionsModel()->getCoinControlFeatures());        coinControlUpdateLabels();        /* fee section        connect(ui->sliderSmartFee, SIGNAL(valueChanged(int)), this, SLOT(updateSmartFeeLabel()));        connect(ui->sliderSmartFee, SIGNAL(valueChanged(int)), this, SLOT(updateGlobalFeeVariables()));        connect(ui->sliderSmartFee, SIGNAL(valueChanged(int)), this, SLOT(coinControlUpdateLabels()));        connect(ui->groupFee, SIGNAL(buttonClicked(int)), this, SLOT(updateFeeSectionControls()));        connect(ui->groupFee, SIGNAL(buttonClicked(int)), this, SLOT(updateGlobalFeeVariables()));        connect(ui->groupFee, SIGNAL(buttonClicked(int)), this, SLOT(coinControlUpdateLabels()));        connect(ui->groupCustomFee, SIGNAL(buttonClicked(int)), this, SLOT(updateGlobalFeeVariables()));        connect(ui->groupCustomFee, SIGNAL(buttonClicked(int)), this, SLOT(coinControlUpdateLabels()));        connect(ui->customFee, SIGNAL(valueChanged()), this, SLOT(updateGlobalFeeVariables()));        connect(ui->customFee, SIGNAL(valueChanged()), this, SLOT(coinControlUpdateLabels()));        connect(ui->checkBoxMinimumFee, SIGNAL(stateChanged(int)), this, SLOT(setMinimumFee()));        connect(ui->checkBoxMinimumFee, SIGNAL(stateChanged(int)), this, SLOT(updateFeeSectionControls()));        connect(ui->checkBoxMinimumFee, SIGNAL(stateChanged(int)), this, SLOT(updateGlobalFeeVariables()));        connect(ui->checkBoxMinimumFee, SIGNAL(stateChanged(int)), this, SLOT(coinControlUpdateLabels()));        connect(ui->checkBoxFreeTx, SIGNAL(stateChanged(int)), this, SLOT(updateGlobalFeeVariables()));        connect(ui->checkBoxFreeTx, SIGNAL(stateChanged(int)), this, SLOT(coinControlUpdateLabels()));        ui->customFee->setSingleStep(CWallet::minTxFee.GetFeePerK());        updateFeeSectionControls();        updateMinFeeLabel();        updateSmartFeeLabel();        updateGlobalFeeVariables();        */    }}

// write QSettings valuesbool OptionsModel::setData(const QModelIndex & index, const QVariant & value, int role){    bool successful = true; /* set to false on parse error */    if(role == Qt::EditRole)    {        QSettings settings;        switch(index.row())        {        case StartAtStartup:            successful = GUIUtil::SetStartOnSystemStartup(value.toBool());            break;        case MinimizeToTray:            fMinimizeToTray = value.toBool();            settings.setValue("fMinimizeToTray", fMinimizeToTray);            break;        case MapPortUPnP: // core option - can be changed on-the-fly            settings.setValue("fUseUPnP", value.toBool());            MapPort(value.toBool());            break;        case MinimizeOnClose:            fMinimizeOnClose = value.toBool();            settings.setValue("fMinimizeOnClose", fMinimizeOnClose);            break;        // default proxy        case ProxyUse:            if (settings.value("fUseProxy") != value) {                settings.setValue("fUseProxy", value.toBool());                setRestartRequired(true);            }            break;        case ProxyIP: {            // contains current IP at index 0 and current port at index 1            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);            // if that key doesn't exist or has a changed IP            if (!settings.contains("addrProxy") || strlIpPort.at(0) != value.toString()) {                // construct new value from new IP and current port                QString strNewValue = value.toString() + ":" + strlIpPort.at(1);                settings.setValue("addrProxy", strNewValue);                setRestartRequired(true);            }        }        break;        case ProxyPort: {            // contains current IP at index 0 and current port at index 1            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);            // if that key doesn't exist or has a changed port            if (!settings.contains("addrProxy") || strlIpPort.at(1) != value.toString()) {                // construct new value from current IP and new port                QString strNewValue = strlIpPort.at(0) + ":" + value.toString();                settings.setValue("addrProxy", strNewValue);                setRestartRequired(true);            }        }        break;        case ProxySocksVersion: {            if (settings.value("nSocksVersion") != value) {                settings.setValue("nSocksVersion", value.toInt());                setRestartRequired(true);            }        }        break;#ifdef ENABLE_WALLET        case Fee: // core option - can be changed on-the-fly            // Todo: Add is valid check  and warn via message, if not            nTransactionFee = value.toLongLong();            settings.setValue("nTransactionFee", (qint64)nTransactionFee);            emit transactionFeeChanged(nTransactionFee);            break;        case SpendZeroConfChange:            if (settings.value("bSpendZeroConfChange") != value) {                settings.setValue("bSpendZeroConfChange", value);                setRestartRequired(true);            }            break;#endif        case DisplayUnit:            nDisplayUnit = value.toInt();            settings.setValue("nDisplayUnit", nDisplayUnit);            emit displayUnitChanged(nDisplayUnit);            break;        case DisplayAddresses:            bDisplayAddresses = value.toBool();            settings.setValue("bDisplayAddresses", bDisplayAddresses);            break;        case Language:            if (settings.value("language") != value) {                settings.setValue("language", value);                setRestartRequired(true);            }            break;        case CoinControlFeatures:            fCoinControlFeatures = value.toBool();            settings.setValue("fCoinControlFeatures", fCoinControlFeatures);            emit coinControlFeaturesChanged(fCoinControlFeatures);            break;        case DatabaseCache:            if (settings.value("nDatabaseCache") != value) {                settings.setValue("nDatabaseCache", value);//.........这里部分代码省略.........

bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, int role){    bool successful = true; /* set to false on parse error */    if(role == Qt::EditRole)    {        QSettings settings;        switch(index.row())        {        case StartAtStartup:            successful = GUIUtil::SetStartOnSystemStartup(value.toBool());            break;        case MinimizeToTray:            fMinimizeToTray = value.toBool();            settings.setValue("fMinimizeToTray", fMinimizeToTray);            break;        case MapPortUPnP:            settings.setValue("fUseUPnP", value.toBool());            MapPort(value.toBool());            break;        case MinimizeOnClose:            fMinimizeOnClose = value.toBool();            settings.setValue("fMinimizeOnClose", fMinimizeOnClose);            break;        case ProxyUse:            settings.setValue("fUseProxy", value.toBool());            ApplyProxySettings();            break;        case ProxyIP: {            proxyType proxy;            proxy = CService("127.0.0.1", 9050);            GetProxy(NET_IPV4, proxy);            CNetAddr addr(value.toString().toStdString());            proxy.SetIP(addr);            settings.setValue("addrProxy", proxy.ToStringIPPort().c_str());            successful = ApplyProxySettings();        }        break;        case ProxyPort: {            proxyType proxy;            proxy = CService("127.0.0.1", 9050);            GetProxy(NET_IPV4, proxy);            proxy.SetPort(value.toInt());            settings.setValue("addrProxy", proxy.ToStringIPPort().c_str());            successful = ApplyProxySettings();        }        break;        case Fee:            nTransactionFee = value.toLongLong();            settings.setValue("nTransactionFee", (qint64) nTransactionFee);            emit transactionFeeChanged(nTransactionFee);            break;        case ReserveBalance:            nReserveBalance = value.toLongLong();            settings.setValue("nReserveBalance", (qint64) nReserveBalance);            emit reserveBalanceChanged(nReserveBalance);            break;        case DisplayUnit:            nDisplayUnit = value.toInt();            settings.setValue("nDisplayUnit", nDisplayUnit);            emit displayUnitChanged(nDisplayUnit);            break;        case Language:            settings.setValue("language", value);            break;        case CoinControlFeatures: {            fCoinControlFeatures = value.toBool();            settings.setValue("fCoinControlFeatures", fCoinControlFeatures);            emit coinControlFeaturesChanged(fCoinControlFeatures);            }            break;        case MinimizeCoinAge:           fMinimizeCoinAge = value.toBool();           settings.setValue("fMinimizeCoinAge", fMinimizeCoinAge);           break;        case UseBlackTheme:            fUseBlackTheme = value.toBool();            settings.setValue("fUseBlackTheme", fUseBlackTheme);            break;        case DarksendRounds:            nDarksendRounds = value.toInt();            settings.setValue("nDarksendRounds", nDarksendRounds);            emit darksendRoundsChanged(nDarksendRounds);            break;        case anonymizeGridmasterAmount:            nAnonymizeGridmasterAmount = value.toInt();            settings.setValue("nAnonymizeGridmasterAmount", nAnonymizeGridmasterAmount);            emit anonymizeGridmasterAmountChanged(nAnonymizeGridmasterAmount);            break;        default:            break;        }    }    emit dataChanged(index, index);    return successful;}

bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, int role){    bool successful = true; /* set to false on parse error */    if(role == Qt::EditRole)    {        QSettings settings;        switch(index.row())        {        case StartAtStartup:            successful = GUIUtil::SetStartOnSystemStartup(value.toBool());            break;        case MinimizeToTray:            fMinimizeToTray = value.toBool();            settings.setValue("fMinimizeToTray", fMinimizeToTray);            break;        case MapPortUPnP:            settings.setValue("fUseUPnP", value.toBool());            MapPort(value.toBool());            break;        case MinimizeOnClose:            fMinimizeOnClose = value.toBool();            settings.setValue("fMinimizeOnClose", fMinimizeOnClose);            break;        case ProxyUse:            settings.setValue("fUseProxy", value.toBool());            ApplyProxySettings();            break;        case ProxyIP: {            proxyType proxy;            proxy = CService("127.0.0.1", 9050);            GetProxy(NET_IPV4, proxy);            CNetAddr addr(value.toString().toStdString());            proxy.SetIP(addr);            settings.setValue("addrProxy", proxy.ToStringIPPort().c_str());            successful = ApplyProxySettings();        }        break;        case ProxyPort: {            proxyType proxy;            proxy = CService("127.0.0.1", 9050);            GetProxy(NET_IPV4, proxy);            proxy.SetPort(value.toInt());            settings.setValue("addrProxy", proxy.ToStringIPPort().c_str());            successful = ApplyProxySettings();        }        break;        case Fee:            nTransactionFee = value.toLongLong();            settings.setValue("nTransactionFee", (qint64) nTransactionFee);            emit transactionFeeChanged(nTransactionFee);            break;        case ReserveBalance:            nReserveBalance = value.toLongLong();            settings.setValue("nReserveBalance", (qint64) nReserveBalance);            emit reserveBalanceChanged(nReserveBalance);            break;        case DisplayUnit:            nDisplayUnit = value.toInt();            settings.setValue("nDisplayUnit", nDisplayUnit);            emit displayUnitChanged(nDisplayUnit);            break;        case Language:            settings.setValue("language", value);            break;        case CoinControlFeatures: {            fCoinControlFeatures = value.toBool();            settings.setValue("fCoinControlFeatures", fCoinControlFeatures);            emit coinControlFeaturesChanged(fCoinControlFeatures);            }            break;        case MinimizeCoinAge:           fMinimizeCoinAge = value.toBool();           settings.setValue("fMinimizeCoinAge", fMinimizeCoinAge);           break;        case UseBlackTheme:            fUseBlackTheme = value.toBool();            settings.setValue("fUseBlackTheme", fUseBlackTheme);            break;        case DarksendRounds:            nDarksendRounds = value.toInt();            settings.setValue("nDarksendRounds", nDarksendRounds);            emit darksendRoundsChanged(nDarksendRounds);            break;        case anonymizecovenAmount:            nAnonymizecovenAmount = value.toInt();            settings.setValue("nAnonymizecovenAmount", nAnonymizecovenAmount);            emit anonymizecovenAmountChanged(nAnonymizecovenAmount);            break;#ifdef USE_NATIVE_I2P        case I2PUseI2POnly:        {            ScopeGroupHelper s(settings, I2P_OPTIONS_SECTION_NAME);            settings.setValue("useI2POnly", value.toBool());            break;        }        case I2PSAMHost:        {            ScopeGroupHelper s(settings, I2P_OPTIONS_SECTION_NAME);//.........这里部分代码省略.........

bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, int role){    bool successful = true; /* set to false on parse error */    if(role == Qt::EditRole)    {        QSettings settings;        switch(index.row())        {        case StartAtStartup:            successful = GUIUtil::SetStartOnSystemStartup(value.toBool());            break;        case MinimizeToTray:            fMinimizeToTray = value.toBool();            settings.setValue("fMinimizeToTray", fMinimizeToTray);            break;        case MapPortUPnP:            fUseUPnP = value.toBool();            settings.setValue("fUseUPnP", fUseUPnP);            MapPort();            break;        case MinimizeOnClose:            fMinimizeOnClose = value.toBool();            settings.setValue("fMinimizeOnClose", fMinimizeOnClose);            break;        case ProxyUse:            settings.setValue("fUseProxy", value.toBool());            ApplyProxySettings();            break;        case ProxyIP: {            proxyType proxy;            proxy.first = CService("127.0.0.1", 9050);            GetProxy(NET_IPV4, proxy);            CNetAddr addr(value.toString().toStdString());            proxy.first.SetIP(addr);            settings.setValue("addrProxy", proxy.first.ToStringIPPort().c_str());            successful = ApplyProxySettings();        }        break;        case ProxyPort: {            proxyType proxy;            proxy.first = CService("127.0.0.1", 9050);            GetProxy(NET_IPV4, proxy);            proxy.first.SetPort(value.toInt());            settings.setValue("addrProxy", proxy.first.ToStringIPPort().c_str());            successful = ApplyProxySettings();        }        break;        case ProxySocksVersion: {            proxyType proxy;            proxy.second = 5;            GetProxy(NET_IPV4, proxy);            proxy.second = value.toInt();            settings.setValue("nSocksVersion", proxy.second);            successful = ApplyProxySettings();        }        break;        case Fee:            nTransactionFee = value.toLongLong();            settings.setValue("nTransactionFee", (qint64) nTransactionFee);            emit transactionFeeChanged(nTransactionFee);            break;        case ReserveBalance:            nReserveBalance = value.toLongLong();            settings.setValue("nReserveBalance", (qint64) nReserveBalance);            emit reserveBalanceChanged(nReserveBalance);            break;        case DisplayUnit:            nDisplayUnit = value.toInt();            settings.setValue("nDisplayUnit", nDisplayUnit);            emit displayUnitChanged(nDisplayUnit);            break;        case DisplayAddresses:            bDisplayAddresses = value.toBool();            settings.setValue("bDisplayAddresses", bDisplayAddresses);            break;        case DetachDatabases: {            bool fDetachDB = value.toBool();            bitdb.SetDetach(fDetachDB);            settings.setValue("detachDB", fDetachDB);            }            break;        case Language:            settings.setValue("language", value);            break;        case CoinControlFeatures: {            fCoinControlFeatures = value.toBool();            settings.setValue("fCoinControlFeatures", fCoinControlFeatures);            emit coinControlFeaturesChanged(fCoinControlFeatures);            }            break;        default:            break;        }    }    emit dataChanged(index, index);    return successful;//.........这里部分代码省略.........

bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, int role){    bool successful = true; /* set to false on parse error */    if(role == Qt::EditRole)    {        QSettings settings;        switch(index.row())        {        case StartAtStartup:            successful = GUIUtil::SetStartOnSystemStartup(value.toBool());            break;        case MinimizeToTray:            fMinimizeToTray = value.toBool();            settings.setValue("fMinimizeToTray", fMinimizeToTray);            break;        case MapPortUPnP:            fUseUPnP = value.toBool();            settings.setValue("fUseUPnP", value.toBool());            MapPort(value.toBool());            break;        case MinimizeOnClose:            fMinimizeOnClose = value.toBool();            settings.setValue("fMinimizeOnClose", fMinimizeOnClose);            break;        case ProxyUse:            settings.setValue("fUseProxy", value.toBool());            ApplyProxySettings();            break;        case ProxyIP: {            proxyType proxy;            proxy = CService("127.0.0.1", 9050);            GetProxy(NET_IPV4, proxy);            CNetAddr addr(value.toString().toStdString());            proxy.SetIP(addr);            settings.setValue("addrProxy", proxy.ToStringIPPort().c_str());            successful = ApplyProxySettings();        }        break;        case ProxyPort: {            proxyType proxy;            proxy = CService("127.0.0.1", 9050);            GetProxy(NET_IPV4, proxy);            proxy.SetPort(value.toInt());            settings.setValue("addrProxy", proxy.ToStringIPPort().c_str());            successful = ApplyProxySettings();        }        break;        case Fee:            nTransactionFee = value.toLongLong();            settings.setValue("nTransactionFee", (qint64) nTransactionFee);            emit transactionFeeChanged(nTransactionFee);            break;        case ReserveBalance:            nReserveBalance = value.toLongLong();            settings.setValue("nReserveBalance", (qint64) nReserveBalance);            emit reserveBalanceChanged(nReserveBalance);            break;        case DisplayUnit:            nDisplayUnit = value.toInt();            settings.setValue("nDisplayUnit", nDisplayUnit);            emit displayUnitChanged(nDisplayUnit);            break;        case DisplayAddresses:            bDisplayAddresses = value.toBool();            settings.setValue("bDisplayAddresses", bDisplayAddresses);            emit displayUnitChanged(settings.value("nDisplayUnit", BitcoinUnits::LEO).toInt());            break;        case DetachDatabases: {            bool fDetachDB = value.toBool();            bitdb.SetDetach(fDetachDB);            settings.setValue("detachDB", fDetachDB);            }            break;        case Language:            settings.setValue("language", value);            break;        case RowsPerPage: {            nRowsPerPage = value.toInt();            settings.setValue("nRowsPerPage", nRowsPerPage);            emit rowsPerPageChanged(nRowsPerPage);            }            break;        case Notifications: {            notifications = value.toStringList();            settings.setValue("notifications", notifications);            }            break;        case VisibleTransactions: {            visibleTransactions = value.toStringList();            settings.setValue("visibleTransactions", visibleTransactions);            emit visibleTransactionsChanged(visibleTransactions);            }            break;        case AutoRingSize: {            fAutoRingSize = value.toBool();            settings.setValue("fAutoRingSize", fAutoRingSize);            }            break;//.........这里部分代码省略.........