C / C++ / MFC

class base
{
    virtual DoSomethingElse()
    {
    	// NOP
    }
};

class first : public base
{
    void DoSomethingElse()
    {
    	// do something to members here
    }
}

class second : public base
{
    void DoSomething()
    {
    	// Call a method in first
    	DoSomethingElse();
    }
}

waldermort wrote:

Haha. Think of a deck of cards. The base class represents the table where the cards will be used. The derived classes represent various actions with the deck of cards ( shuffling, dealing... ). One of the derived classes inparticular represents all the cards currently visible (face up) on the table. When a card is dicarded, I call a member function of my discards class to add the card to an internal array. I must also add the card to the list of visible cards. But rather than calling two functions, I want to know if I can automate this from the discard class by calling a member function of the visible class directly.

class second : public base
{
    void DoSomething()
    {
    	first *pFirst=new first();
        pFirst->DoSomethingElse(); // This calls a method of the first class
        // delete pFirst;
    	DoSomethingElse();
    }
}

Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_

_AnShUmAn_ wrote:

Is there some problem in declaring a pointer to the first class in the second one:

waldermort wrote:

Is it at all possible for one class to call a function in another class?

tejaswini.g wrote:

CStirng Str="tejaswini";

SQLCHAR SQL[] = "SELECT EmployeeID,Salary FROM EMPLOYEE WHERE EmpName=Str";

CString Str;
Str.Format( _T( "SELECT EmployeeID,Salary FROM EMPLOYEE WHERE EmpName=%s" ), _T( "tejaswini" ));

SQLCHAR SQL[] = Str; // Maybe you will have to convert this Str to SQLCHAR type.

tejaswini.g wrote:

What is the wrong with my code?

tejaswini.g wrote:

"SELECT EmployeeID,Salary FROM EMPLOYEE WHERE EmpName=Str";

toxcct wrote:

i told him that we were speaking english here !

tejaswini.g wrote:

SQLCHAR SQL[] = "SELECT EmpID,Salary FROM Employee WHERE EmpName='"+pbuff +"'";

Sydes wrote:

HINSTANCE for my DLL when it's loaded as

Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_