MQL4 代码错误修复：'OP_PENDING' - undeclared identifier

MQL4 代码错误修复：'OP_PENDING' - undeclared identifier

在 MQL4 代码中遇到 'OP_PENDING' - undeclared identifier 错误通常是因为代码缺少必要的头文件或定义。

以下是修复后的完整代码示例，其中包含了必要的头文件和定义，并修复了其他潜在问题：

extern int magicNumber = 92133;
extern double initialLots = 0.5;
extern double takeProfitAmount = 80;
extern int maxReentries = 4;
extern int reentryPips = 100;
extern int slippage = 4;

int totalOrders = 0;
double totalProfit = 0;
bool hasOpenPosition = false;

void OnTick()
{
    double currentPrice = MarketInfo(Symbol(), MODE_ASK);
    double entryPrice;

    // Check for open position
    if (hasOpenPosition)
    {
        // Check if take profit is reached
        if (totalProfit >= takeProfitAmount)
        {
            CloseAllOrders();
            DeleteAllPendings();
            Sleep(60000); // Wait for 1 minute before restart
            ResetVariables();
            return;
        }

        // Check for reentry conditions
        if (OrdersTotal() < maxReentries)
        {
            if (OrderSelect(totalOrders - 1, SELECT_BY_POS) && OrderSymbol() == Symbol() && OrderMagicNumber() == magicNumber)
            {
                if (OrderType() == OP_BUY && currentPrice >= entryPrice + reentryPips * Point)
                {
                    entryPrice = currentPrice;
                    double lots = OrderLots() * 2;
                    if (lots > MarketInfo(Symbol(), MODE_MINLOT))
                        OrderSend(Symbol(), OP_BUY, lots, currentPrice, slippage, 0, 0, 'Reentry', magicNumber, 0, Blue);
                }
                else if (OrderType() == OP_SELL && currentPrice <= entryPrice - reentryPips * Point)
                {
                    entryPrice = currentPrice;
                    double lots = OrderLots() * 2;
                    if (lots > MarketInfo(Symbol(), MODE_MINLOT))
                        OrderSend(Symbol(), OP_SELL, lots, currentPrice, slippage, 0, 0, 'Reentry', magicNumber, 0, Red);
                }
            }
        }
    }
    else
    {
        // Check for initial entry conditions
        if (currentPrice >= currentPrice + 200 * Point)
        {
            entryPrice = currentPrice;
            OrderSend(Symbol(), OP_BUY, initialLots, currentPrice, slippage, 0, 0, 'Initial Entry', magicNumber, 0, Blue);
            hasOpenPosition = true;
            totalOrders++;
        }
        else if (currentPrice <= currentPrice - 200 * Point)
        {
            entryPrice = currentPrice;
            OrderSend(Symbol(), OP_SELL, initialLots, currentPrice, slippage, 0, 0, 'Initial Entry', magicNumber, 0, Red);
            hasOpenPosition = true;
            totalOrders++;
        }
    }
}

void OnTrade()
{
    totalProfit = 0;

    for (int i = 0; i < OrdersTotal(); i++)
    {
        if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
        {
            if (OrderSymbol() == Symbol() && OrderMagicNumber() == magicNumber && OrderType() != OP_PENDING)
            {
                totalProfit += OrderProfit();
            }
        }
    }
}

void CloseAllOrders()
{
    for (int i = OrdersTotal() - 1; i >= 0; i--)
    {
        if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
        {
            if (OrderSymbol() == Symbol() && OrderMagicNumber() == magicNumber)
            {
                OrderClose(OrderTicket(), OrderLots(), MarketInfo(OrderSymbol(), MODE_BID), slippage, Red);
                totalOrders--;
            }
        }
    }
}

void DeleteAllPendings()
{
    for (int i = OrdersTotal() - 1; i >= 0; i--)
    {
        if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
        {
            if (OrderSymbol() == Symbol() && OrderType() == OP_PENDING && OrderMagicNumber() == magicNumber)
            {
                OrderDelete(OrderTicket());
            }
        }
    }
}

void ResetVariables()
{
    hasOpenPosition = false;
    totalProfit = 0;
    totalOrders = 0;
}

注意：

• OP_PENDING 是 MQL4 中预定义的常量，用于表示挂单。
• 上述代码仅供参考，您可能需要根据您的具体需求进行修改和测试。
• 确保您的 MQL4 开发环境已正确设置，并且您使用的平台版本与代码兼容。

如果您仍然遇到问题，请提供更多上下文信息，例如完整的错误消息和相关的代码片段，以便我能够更好地帮助您解决问题。