VC++ Class Structures

[novicedude]

Hi, I am developing a client server application with vc++. I have the following 3 main classes * PayrollDlg - This is the main dialog box * WageDlg - This dialog box is accessible thru PayrollDlg * AbsSocket - This class manages the networking aspect i.e creating a socket & sending , receiving data. Now i need to create an object os AbsSocket that can be accessed from both PayrollDlg as well as WageDlg. Where do i declare this object to achieve this. If i declare the AbsSocket object in either PayrollDlg or WageDlg classes it becomes local to that class. What i actually want to know is where is the main() function as if i declare the AbsSocket object in this main it can be accessed anywhere right?

[Monty2]

You can declare it as global in one cpp file and then declare it using extern in another

//WageDlg.cpp
AbsSocket g_AbsSocket;

//PayrollDlg.cpp
extern AbsSocket g_AbsSocket;

or if u want a cleaner way you can do this

class CGlobalVariables
{
static AbsSocket g_AbsSocket;
};
CGlobalVariables::AbsSocket g_AbsSocket;

and include this class in stdafx.h then u can use it like CGlobalVariables::g_AbsSocket whereever u like as for accessing the main function, in MFC it is buried deep under the classes of MFC u can't(shouldn't) access it hope it helps

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C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg

[David Crow]

You could always derive PayrollDlg and WageDlg from a common class where AbsSocket is a member variable.

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"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen