How to sort MT4 Self-Created Class (CList)

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I'm not sure what "MT4" means, but let's say it's probably "MetaTrader4".

As far as MetaTrader 5 references are concerned, if you override CObject::Compare() and compare it based on the desired member variable, you can use CList::Sort().

class Xxx:public CObject{
...
public:
    virtual int Compare(const CObject*node, const int mode = 0) const override {
        // To obtain a pointer from the node argument to Xxx, click
        // Downcast with static_cast or dynamic_cast.
        // Returns 0 if this object equals a node object.
        // Returns -1 if this object is smaller than the node object.
        // Returns 1 if this object is greater than the node object.
        // It is not known what the argument mode is.
    }
};

Before you ask a question, read the reference first.Regardless of major or small vendors, Japanese references can be translated incorrectly or out of date, so you can get more accurate information by reading the original English references.If you have high school knowledge, you can read technical English.

By the way, this library looks very similar to the old Microsoft Foundation Classes (MFCs), but from the standpoint of a fairly experienced C++ programmer, the overall design is quite strange.I think it's better not to use it unless there's a good reason.