An application sends messages to the trackbar to retrieve information about the trackbar and to change its characteristics. The following are the trackbar messages.
TBM_CLEARSEL
TBM_CLEARTICS
TBM_GETCHANNELRECT
TBM_GETLINESIZE
TBM_GETNUMTICS
TBM_GETPAGESIZE
TBM_GETPOS
TBM_GETPTICS
TBM_GETRANGEMAX
TBM_GETRANGEMIN
TBM_GETSELEND
TBM_GETSELSTART
TBM_GETTHUMBLENGTH
TBM_GETTHUMBRECT
TBM_GETTIC
TBM_GETTICPOS
TBM_SETLINESIZE
TBM_SETPAGESIZE
TBM_SETPOS
TBM_SETRANGE
TBM_SETRANGEMAX
TBM_SETRANGEMIN
TBM_SETSEL
TBM_SETSELEND
TBM_SETSELSTART
TBM_SETTHUMBLENGTH
TBM_SETTIC
TBM_SETTICFREQ