C / C++ / MFC

reza matinnejad wrote:

I avoid making circular includes in this way

<font color="green">//Beginning of the header file</font>
<font color="blue">#pragma once</font>
 
<font color="green">//...remaining of your file...</font>

<font color="green">//Beginning of the header file</font>
<font color="blue">#ifndef</font> __YOUR_HEADER_FILE_H_INCLUDED__
<font color="blue">#define</font> __YOUR_HEADER_FILE_H_INCLUDED__
 
<font color="green">//...remaining of your file...</font>
 
<font color="blue">#endif</font> <font color="green">//At the very end of the file</font>

BEGIN_MESSAGE_MAP(CMyEdit, CEdit)
	//{{AFX_MSG_MAP(CMyEdit)
	ON_WM_CONTEXTMENU()
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_COPY,OnCopy)
	ON_MESSAGE(WM_PASTE,OnPaste)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyEdit message handlers

void CMyEdit::OnContextMenu(CWnd* pWnd, CPoint point) 
{
	// TODO: Add your message handler code here
}
void CMyEdit::OnCopy(WPARAM wParam,LPARAM lParam) 
{
	// TODO: Add your message handler code here
}
void CMyEdit::OnPaste(WPARAM wParam,LPARAM lParam) 
{
	// TODO: Add your message handler code here
}

protected:
	//{{AFX_MSG(CMyEdit)
	afx_msg void OnContextMenu(CWnd* pWnd, CPoint point);
	//}}AFX_MSG

	void OnCopy(WPARAM wParam,LPARAM lParam) ;
	void OnPaste(WPARAM wParam,LPARAM lParam) ;

monsieur_jj wrote:

At the bold part where the crashing happens at only one time at a specific value,

 void GetHostIP()
{
    char *Ip;
    WSADATA wsaData;
    struct hostent *pHostEnt; 
    struct sockaddr_in tmpSockAddr; //placeholder for the ip address

    // Not needed if it is already taken care by some other part of the application
    WSAStartup(MAKEWORD(2,0),&wsaData); 

    char hostname[25];
    strcpy(hostname,"Test Computer Name")
    //This will retrieve the ip details and put it into pHostEnt structure
    pHostEnt = gethostbyname(hostname);

    if(pHostEnt == NULL)
    {
        printf("Error occured: %s\n",GetLastError());
        return;
    }

    memcpy(&tmpSockAddr.sin_addr,pHostEnt->h_addr,pHostEnt->h_length);

    Ip = NULL;
    Ip = new char[17];
    strcpy(Ip,inet_ntoa(tmpSockAddr.sin_addr));
    printf("Ip Address of the machine %s is %s\n",Ip);

    // Not needed if it is already taken care by some other part of the application
    WSACleanup();
    delete [] Ip;
}

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