codewarrior problem

[Pablo Martin Vera]

I�m having a problem with my proyect.  I added a new class file in my
proyect, that class inherit s from CDBPopupTrigger to manage a combo box. 

The problem is that withing this file there seems to be no reference to the
pol�s classes.

Error   : undefined identifier 'CDBPopupTrigger'
CCmbCategoriasIVA.h line 4   class CCmbCategoriasIVA  : public
CDBPopupTrigger

Error   : declaration syntax error
CCmbCategoriasIVA.h line 10        CString m_strText;

Error   : declaration syntax error
CCmbCategoriasIVA.h line 11   };

Error   : undefined identifier 'GetDatabase'
CCmbCategoriasIVA.cpp line 7       CDatabase* pDatabase = GetDatabase();

Error   : undefined identifier 'LeerRegistro'
CCmbCategoriasIVA.cpp line 8    pDatabase->LeerRegistro(nItemNum);

Error   : undefined identifier 'm_strText'
CCmbCategoriasIVA.cpp line 9    m_strText=registro.strDescripcion;    

Error   : undefined identifier 'm_strText'
CCmbCategoriasIVA.cpp line 10       return m_strText;


this is the file CCmbCategoriasIVA.h

#ifndef _CMB_CATEGORIAS_IVA_H_
#define _CMB_CATEGORIAS_IVA_H_

class CCmbCategoriasIVA  : public CDBPopupTrigger
{
         public:
            virtual const Char* GetItemText(Int16 nItemNum, UInt16 wIndex);

         protected:
            CString m_strText;
};
#endif


I�m missing something??  Codewarrior has some number of files in the proyect
limitation???


Thanks

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