#include <map>

// The define map could probably be made part of CWindowsMessageToString

static std::map<int, const TCHAR*> defineMap

#define DEFINE_MESSAGE(wm) defineMap.insert( pair<int, char*>(wm, TEXT(#wm)) )

CWindowsMessageToString::CWindowsMessageToString()
{
    DEFINE_MESSAGE(WM_CREATE);
    DEFINE_MESSAGE(WM_DESTROY);
    DEFINE_MESSAGE(WM_MOVE);
    DEFINE_MESSAGE(WM_SIZE);
    // ...
}

TCHAR *CWindowsMessageToString::GetStringFromMsg( DWORD dwMessage, bool bShowFrequentMessages )
{
    //...
    if (defineMap.find(dwMessage))
    {
        return defineMap[dwMessage];
    }
    return NULL;
}