CODEWITHSUNDEEP
c++abstract-classfunction-pointers
YAKOVM
YAKOVM

Reputation: 10153

static function pointer in the abstract class

I am implementing an abstract factory class. In the base (abstract class), I define the following typedef:

// Logging callback type.
typedef void (*LoggingCallBackFuncP)(const std::string&);

and have 

static LoggingCallBackFuncP m_LogCallback;

Also I want to have following function declaration the the abstract class:

static void SetLog(LoggingCallBackFuncP callback);

This function will initialize m_LogCallback In such a way I want to get the opportunity to initialize a log function only once and use it for all derived classes. Is this approach OK? When/how should I initialize m_LogCallback?

Upvotes: 0

Views: 260

Answers (1)

Drew Dormann
Drew Dormann

Reputation: 63775

Is this approach OK?

Yes.

When/how should I initialize m_LogCallback?

Since SetLog is static, you can call it anytime, without the need for an object instance.

The syntax is NameOfAbstractClass::SetLog( my_callback );

Upvotes: 1

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