Data Types

BOOL       A   Boolean   value. 


BSTR       A   32-bit   character   pointer. 


BYTE       An   8-bit   integer   that   is   not   signed. 


COLORREF       A   32-bit   value   used   as   a   color   value. 


DWORD       A   32-bit   unsigned   integer   or   the   address   of   a   segment   and   its   associated   offset. 


LONG       A   32-bit   signed   integer. 


LPARAM       A   32-bit   value   passed   as   a   parameter   to   a   window   procedure   or   callback   function. 


LPCSTR       A   32-bit   pointer   to   a   constant   character   string. 


LPSTR       A   32-bit   pointer   to   a   character   string. 


LPCTSTR       A   32-bit   pointer   to   a   constant   character   string   that   is   portable   for   Unicode   and   DBCS. 


LPTSTR       A   32-bit   pointer   to   a   character   string   that   is   portable   for   Unicode   and   DBCS. 


LPVOID       A   32-bit   pointer   to   an   unspecified   type. 


LRESULT       A   32-bit   value   returned   from   a   window   procedure   or   callback   function. 


UINT       A   16-bit   unsigned   integer   on   Windows   versions   3.0   and   3.1;   a   32-bit   unsigned   integer   on   Win32. 


WNDPROC       A   32-bit   pointer   to   a   window   procedure. 


WORD       A   16-bit   unsigned   integer. 


WPARAM       A   value   passed   as   a   parameter   to   a   window   procedure   or   callback   function:   16   bits   on   Windows   versions   3.0   and   3.1;   32   bits   on   Win32.   

POSITION       A   value   used   to   denote   the   position   of   an   element   in   a   collection;   used   by   MFC   collection   classes. 


LPCRECT       A   32-bit   pointer   to   a   constant   (nonmodifiable)   RECT   structure.