I would like to use a WM_NOTIFY function to manage a slider thumb position change, according this MSN trackbar link TRBN_THUMBPOSCHANGING .
Does somebody know why the notification code "TRBN_THUMBPOSCHANGING" for the slider control seems ignored in "WindowsConstants.au3" include file ?
Searching in AutoIt or MSN forum , or googling this code, I don't succeed to catch any code info !!! Is it obsolete ?
Thanks
Alain.