The following messages are used with toolbars.
TB_ADDBITMAP
TB_ADDBUTTONS
TB_ADDSTRING
TB_AUTOSIZE
TB_BUTTONCOUNT
TB_BUTTONSTRUCTSIZE
TB_CHANGEBITMAP
TB_CHECKBUTTON
TB_COMMANDTOINDEX
TB_CUSTOMIZE
TB_DELETEBUTTON
TB_ENABLEBUTTON
TB_GETBITMAP
TB_GETBITMAPFLAGS
TB_GETBUTTON
TB_GETBUTTONTEXT
TB_GETITEMRECT
TB_GETROWS
TB_GETSTATE
TB_GETTOOLTIPS
TB_HIDEBUTTON
TB_INDETERMINATE
TB_INSERTBUTTON
TB_ISBUTTONCHECKED
TB_ISBUTTONENABLED
TB_ISBUTTONHIDDEN
TB_ISBUTTONINDETERMINATE
TB_ISBUTTONPRESSED
TB_PRESSBUTTON
TB_SAVERESTORE
TB_SETBITMAPSIZE
TB_SETBUTTONSIZE
TB_SETCMDID
TB_SETPARENT
TB_SETROWS
TB_SETSTATE
TB_SETTOOLTIPS