delphi - How to change the volume of Tmediaplayer using a trackbar -


i new delphi 2010. using tmediaplayer play wma files in loop. want change volume of tmediaplayer. googled ways al seem difficult. there easy ways change volume using trackbar. suggestions on start ?

the vcl version of tmediaplayer not provide kind of volume control. have resort direct mci commands, such setaudio command (left|right) volume set <factor> flag. deviceid property tell device identifier can send commands while player active.

the fmx version of tmediaplayer has volume property. firemonkey introduced in xe2 though, d2010 not have it.


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