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I have a class called "Server Class". This is the ServerClass.h file:

C++
#define DEFAULT_BUFLEN 512
#ifndef SERVERCLASS_H
#define SERVERCLASS_H
#endif

class ServerClass_h
{
public:
    int CreateServer(HWND);
    int CloseServer();
    char* getcbuffer();
    int listensock();
private:
    SOCKET ListenSocket = INVALID_SOCKET;
    SOCKET ClientSocket = INVALID_SOCKET;
    char recvbufx[DEFAULT_BUFLEN];
    int recvbuflen;
};


And the CPP, that is a little bit large, so I will put it in a pastebin: http://pastebin.com/6wKDWXX4[^]

Then, I include the ServerClass header into my main CPP file:

C++
#include "ServerClass.h"


And then, in the right line, I add the following code:

C++
if(ServerClass::CreateServer(hwnd) == 0)
SetWindowText(hwnd,"Session created");


But the compiler complains about this, and says:

error: '::CreateServer' has not been declared

It even appears in the autocomplete, so it should exist. I don't know what's wrong.

I'm using the GNU GCC compiler, and programming in Windows.
Posted

Quote:
ServerClass::CreateServer(hwnd)
Since CreateServer is not a static member of the class, you cannot call it that way. You first to create an instance of the ServerClass and the invoke its CreateServer method.


BTW
Quote:
class ServerClass_h
{
public:
int CreateServer(HWND);
int CloseServer();
The name of the class should be instead ServerClass.

BTW2:
listensock is defined as static but it is NOT declared as static.
 
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Comments
Magnus9998 22-Aug-13 9:51am    
Yeah, I had to mess so much with the code, that I ended doing stupid things without even noticing.

I modified the header


<pre lang="c++">#define DEFAULT_BUFLEN 512
#ifndef SERVERCLASS_H
#define SERVERCLASS_H
#endif

class ServerClass
{
public:
static int CreateServer(HWND);
static int CloseServer();
static char* getcbuffer();
static int listensock();
private:
static SOCKET ListenSocket;
static SOCKET ClientSocket;
static char recvbufx[DEFAULT_BUFLEN];
static int recvbuflen;
};</pre>


But I still get an error.

"error: an anonymous struct cannot have function members"

And also

"error: abstract declarator '' used as declaration"

Both errors point to the lines 7 and 18 of my ServerClass.h header.

I only want to have access to those functions from another classes.
maybe it work like this:
C++
#define DEFAULT_BUFLEN 512
#ifndef SERVERCLASS_H
#define SERVERCLASS_H
#endif
 
class ServerClass_h
{
public:
    static int CreateServer(HWND);
    static int CloseServer(HWND);
    char* getcbuffer();
    int listensock();

private:
    SOCKET ListenSocket = INVALID_SOCKET;
    SOCKET ClientSocket = INVALID_SOCKET;
    char recvbufx[DEFAULT_BUFLEN];
    int recvbuflen;
};


then you can use it like this:
C++
HWND someHwnd;

// ...

if(ServerClass::CreateServer(hwnd) == 0)
	SetWindowText(hwnd,"Session created");

// ...

if(ServerClass::CloseServer(hwnd) == 0)
	SetWindowText(hwnd,"Session closed");



or you doing something like this:

C++
class ServerClass
{
public:
	static ServerClass* CreateServer(HWND hWnd)
	{
		try
		{
			ServerClass serverClass = new ServerClass(hWnd);
			return serverClass;
		}
		catch
		{
			return NULL;
		}
	}
	BOOL CloseServer(ServerClass* serverClass)
	{
		try
		{
			if(serverClass)
			{
				delete serverClass;
				serverClass = NULL;
			}

			return TRUE;
		}
		catch
		{
			return FALSE;
		}
	}
	// ...

private:
	ServerClass(HWND);
	~ServerClass();
	// ...

}


then you could use it like this:
C++
ServerClass* m_pServerClass = NULL;

// ...

ServerClass* pServerClass = ServerClass::CreateServer(hwnd);
if(pServerClass != NULL)
{
	m_pServerClass = pServerClass;
	SetWindowText(hwnd,"Session created");
}

// ...

if(ServerClass::CloseServer(m_pServerClass) == TRUE)
	SetWindowText(hwnd,"Session closed");
 
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v2
Comments
Magnus9998 22-Aug-13 10:59am    
I still keep getting errors:

"error: an anonymous struct cannot have function members"
And also
"error: abstract declarator '' used as declaration"

Both errors point to the lines 7 and 18 of my ServerClass.h header. Which means that, for some bizarre reason, it doesn't get the name of my class, but why?
Okay, I got it!

The problem was the name of the class. It must have been conflicting with something, and that caused the error of the compiler, confusing my class with a struct.

I changed the name of the class to "servman", defined the functions as static, and now I got it working "fine". I still must have a glitch somewhere since it gets stuck somewhere, but that's another story. I can now call the CreateServer function from another class.
 
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Comments
C3D1 23-Aug-13 4:09am    
What's about a Namespace around your class?!
Sergey Alexandrovich Kryukov 28-May-14 12:56pm    
How you can consider it as the "answer" or "solution"? Imagine what can happen if everyone would report how one screwed up and then fixed something...
—SA

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