Re: class dependencies and namespace

From:
sonison.james@gmail.com
Newsgroups:
comp.lang.c++
Date:
Sat, 29 Dec 2007 19:20:53 -0800 (PST)
Message-ID:
<cfdbdf77-25c0-466e-9e8c-2366a0a48862@s12g2000prg.googlegroups.com>
On Dec 29, 6:14 pm, Mosfet <anonym...@free.fr> wrote:

Hi,

I am trying to solve an issue with a dependency between two classes as
shown below :

atlwince.h (declaration and definition is done in the .h)
----------

struct _ATL_AYGSHELL_STATE
{
public:
        // Handle initialization and cleanup of AYGSHELL
        _ATL_AYGSHELL_STATE()
        {
                if (!AYGSHELL::SHSipInfo(...)) <- Not yet defined
                {
                        m_nAygshellUIModel = Smartphone;
                }
                else
                {
                        m_nAygshellUIModel = PocketPC;
                }
        }

};

const _ATL_AYGSHELL_STATE& ATL_CDECL _AtlGetAygshellState();
BOOL WINAPI AtlIsAygshellSupported();
int WINAPI AtlGetAygshellUIModel();
BOOL WINAPI AtlIsDRAEnabled();
void WINAPI AtlEnableDRA(BOOL bEnable);

namespace AYGSHELL
{
        inline BOOL SHSipInfo(UINT uiAction, UINT uiParam, PVOID pvParam, UINT
fWinIni)
        {
                const _ATL_AYGSHELL_STATE& aygshellState = _AtlGetAygshellState();
                ASSERT(aygshellState.m_pfnSHSipInfo);

                return aygshellState.m_pfnSHSipInfo(uiAction, uiParam, pvParam, fWinIni);
        }

}// namespace AYGSHELL

As you can see I have a mutual dependency bewteen these two classes.
When I compile I get :

  error C2653: 'AYGSHELL' : is not a class or namespace name


Just forward declare AYGSHELL::SHSipInfo before the declaration of
struct _ATL_AYGSHELL_STATE

namespace AYGSHELL
{
        inline BOOL SHSipInfo(UINT uiAction, UINT uiParam, PVOID
pvParam, UINT fWinIni);
}

Thanks and regards
Sonison James

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