Problems With MFC Control ...

[daniloa]

Hi every one, I'm very beginer C++ Developer and I have a problem developing a OCX control that I can't know what I have to do, this is:

I have a Function like: long PlayInteger(long pDev, long pNum) that was created with the class wizard.
but this function uses four other functions, that I cannot create in class wizard because are internal functions, Until Here OK, but inside these internal funcitons I need to use another function that was created with class wizard, it's more or less this:

long MyClass::FuncA(long pP1)
{ ... }

long MyClass::FuncB(long pP2)
{
...
Ret = FuncC(0);
...
}

long FuncC(long pP3)
{
...
Aux = FuncA(56);
...
}

when I complile I receive thi error message:
on this sample line "Aux = FuncA(56);"

D:\Temp\Testes\AlcUra\AlcUraCtl.cpp(807) : error C2065: 'TocaPromptA' : undeclared identifier

someone can help me ??

very thanks,

Danilo...

 

[fheyn]

Before calling FuncA, create instance instMyClass of MyClass like MyClass* instMyClass and use instMyClass->FuncA

 

[PhilMunro]

If you declare a pointer to your class, don't forget to use the 'new' and 'delete' operaters, otherwise referencing a null pointer will cause a runtime error:

MyClass* pMyClass;
pMyClass = new MyClass;
pMyClass->FuncA(x);
delete pMyClass;

A much simple solution is:

MyClass myclass;
myclass.FuncA(x);


This way, memory deallocation is done for you automatically when the myclass instance goes out of scope.
Phil