What Assertion do you get ?

I will check when I get home from work tonight but I honestly dont recall any particular message besides Assertion Fault Error.

Actually I think I have pinpointed the problem but still dont quite understand the solution.  Bear with me as I am still self teaching myself MFC.

It seems I was referencing the CIPAddressCtrl outside the dialog class that declares it.  Doing so is what was causing the assertion fault.  I then overrided the OnInitDialog method in my CDialog class to initialize the CIPAddressCtrl to the value from the registry.  I am still getting the assertion fault error though.

I beleive the assertion fault error is because the control is not yet created as I can set the actual control if I wanted to in the function that runs when the OK button on the CDialog is pressed but nowhere else.  

How would I go about this?  I think I need to call the CIPAddressCtrl::Create method or something first but that will require a structure containing information I am not sure how to reference at this time.  

Raising the points for a good detailed explantion.

If your ip address control is defined in the dialog template (meaning - you dragged an ip address control to your dialog in the dialog editor), than it is probably created when you get to your OnInitDialog.
If this is the case, make sure your implementation inside the OnInitDIalog is done AFTER the call to the base implemetation.

If you will send the specific line where the assertion occures, maybe it will give me a better idea about the problem.

Here is a copy/paste of my header file and the OnInitDialog.  Actually i dont think its created in my onInitDialog though.  From what I read this is all the preprocessing before the creation as onInitDialog calls the DataExchange for loading the values on creation.  I am getting the assertion fault in the onInitDialog though.

Header File:
#if !defined(AFX_EQLP_SERVER_PROPERTIES_H__EB6ECF0B_2AB8_47B1_B667_33DF8200F804__INCLUDED_)
#define AFX_EQLP_SERVER_PROPERTIES_H__EB6ECF0B_2AB8_47B1_B667_33DF8200F804__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// EQLP_Server_Properties.h : header file
//

/////////////////////////////////////////////////////////////////////////////
// EQLP_Server_Properties dialog

class EQLP_Server_Properties : public CDialog
{
// Construction
public:
     EQLP_Server_Properties(CWnd* pParent = NULL);   // standard constructor
   void SetIP(DWORD ip);
   BOOL OnInitDialog();

// Dialog Data
     //{{AFX_DATA(EQLP_Server_Properties)
     enum { IDD = IDD_DIALOG1 };
     CIPAddressCtrl     m_serverip;
     CEdit     m_svrportnumedit;
     CString     m_svrportnum;
     //}}AFX_DATA


// Overrides
     // ClassWizard generated virtual function overrides
     //{{AFX_VIRTUAL(EQLP_Server_Properties)
     protected:
     virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
     //}}AFX_VIRTUAL

// Implementation
protected:

     // Generated message map functions
     //{{AFX_MSG(EQLP_Server_Properties)
     afx_msg void OnServerPropOk();
     //}}AFX_MSG
     DECLARE_MESSAGE_MAP()
};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_EQLP_SERVER_PROPERTIES_H__EB6ECF0B_2AB8_47B1_B667_33DF8200F804__INCLUDED_)




OnInitDialog member in cpp file:
BOOL EQLP_Server_Properties::OnInitDialog() {
   char *ip;
   DWORD dwIp;

   ip = EQLP_Registry::getserverip();
   dwIp = inet_addr(ip);
   m_serverip.SetAddress(ntohl(dwIp));//this is the line getting the assertion fault.

  return TRUE;
}



Exact Assertion Fault error:
Debug Assertion Failed!

Program: c:\EQLP_Client\Debug\EQLP_Client.exe
File: afxcmn.inl
Line: 301

Actually, I just realized this morning what my problem was.  In my onInitDialog() fuction I need to first call the base class onInit which should create my control and allow access to the SetAddress function.  Testing this at work seemed to work and therefore should work on my home project.

BOOL CMyDialog::OnInitDialog()
{
     CDialog::OnInitDialog(); //This is the line of code I was missing
     
     // Add my code here
     
     return TRUE;  
}

Glad to hear you found the problem.