The following messages are unique to rich edit controls.
EM_CANPASTE
EM_DISPLAYBAND
EM_EXGETSEL
EM_EXLIMITTEXT
EM_EXLINEFROMCHAR
EM_EXSETSEL
EM_FINDTEXT
EM_FINDTEXTEX
EM_FINDWORDBREAK
EM_FORMATRANGE
EM_GETCHARFORMAT
EM_GETEVENTMASK
EM_GETIMECOLOR
EM_GETIMEOPTIONS
EM_GETOLEINTERFACE
EM_GETOPTIONS
EM_GETPARAFORMAT
EM_GETPUNCTUATION
EM_GETSELTEXT
EM_GETTEXTRANGE
EM_GETWORDBREAKPROCEX
EM_GETWORDWRAPMODE
EM_HIDESELECTION
EM_PASTESPECIAL
EM_REQUESTRESIZE
EM_SELECTIONTYPE
EM_SETBKGNDCOLOR
EM_SETCHARFORMAT
EM_SETEVENTMASK
EM_SETIMECOLOR
EM_SETIMEOPTIONS
EM_SETOLEINTERFACE
EM_SETOPTIONS
EM_SETPARAFORMAT
EM_SETPUNCTUATION
EM_SETTARGETDEVICE
EM_SETWORDBREAKPROCEX
EM_SETWORDWRAPMODE
EM_STREAMIN
EM_STREAMOUT
WM_CONTEXTMENU