char c;
String s;
for(int i = 1; i<1000;i++){
	if(fnt.HasChar(i)){
		
		c = i;
		s << c;
		
	}else {
		break;
	}
	
}
LOG(s);

FT_ULong  charcode;                                              
FT_UInt   gindex;                                                

charcode = FT_Get_First_Char( face, &gindex );                   
while ( gindex != 0 )                                            
{                                                                
  //... do something with (charcode,gindex) pair ...               

  charcode = FT_Get_Next_Char( face, charcode, &gindex );        
}