First see definition
#define declare_message_map () /
PRIVATE: /
Static const AFX_MSGMAP_ENTRY _MESSAGEENTRIES []; /
protected: /
Static AFX_DATA Const AFX_MSGMAP MessageMap; /
Virtual const AFX_MSGMAP * getMessageMap () const; /
AFX_MSGMAP_ENTRY is a structure
STRUCT AFX_MSGMAP_ENTRY
{
Uint NMessage; // Windows Message
Uint ncode; // control code or wm_notify code
Uint Nid; // Control ID (or 0 for Windows Messages)
UINT NLASTID; / / USED for Entries Specifying a Range of Control ID's
Uint nsig; // signature type (action) or pointer to message #
AFX_PMSG PFN; // Routine to Call (Or Special Value)
}
AFX_DATA definition
#define AFX_CORE_DATA
#define AFX_DATA AFX_CORE_DATA
AFX_MSGMAP is also a structure
Struct AFX_MSGMAP
{
#ifdef _AFXDLL
Const AFX_MSGMAP * (Pascal * PfNgetBaseMap) ();
#ELSE
Const AFX_MSGMAP * PBASEMAP;
#ENDIF
Const AFX_MSGMAP_ENTRY * LPENTRIES;
}
Let's take a look at the third line.
Static const AFX_MSGMAP_ENTRY _MESSAGEENTRIES [];
Define a static constant AFX_MSGMAP_ENTRY structure name to _MessageEntries
why? No size
From the grammar, a static variable is ok, like:
#include
Class A
{
PUBLIC:
Static const Int Arrdata [];
}
Const Int A :: Arrdata [] = {1, 2, 3, 4, 5};
void main ()
{
Cout << A :: Arrdata [3];
}
