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Note: void(*_help)(messageStatus,IO_Form)
The above “_help” is a pointer to a function or logic that are is passed the two arguments.
You use it like the following way:
Note:”ClearMessage” is a value withing the enum list which is declared in iodef.
Note: The function logic has to be defined so that it processes the information passed to it. In this case, it gives a help message or clears the printed message at a particular location on the form. Help message might be "date must be between a particular time."
Bool (*_Validate)((char*)_data.(*_owner));