Trackbar tutorial app :-)
The one on top can use selection
(defined in the control style properties)
Written with PIDE PPL 0.6b by Vasanne Eric
Functions List:

Trackbar_Reset(trackbar$)
Trackbar_SetRange(trackbar$, min$, max$)
Trackbar_GetRange(trackbar$)
Trackbar_SetTicFreq(trackbar$, ticfreq$)
Trackbar_SetSelStart(trackbar$)
Trackbar_SetSelEnd(trackbar$)
Trackbar_GetSelStart(trackbar$)
Trackbar_GetSelEnd(trackbar$)
Trackbar_GetPos(trackbar$)
Trackbar_SetPos(trackbar$, newpos$)
Trackbar_StepUp(trackbar$, stepsize$)
Trackbar_StepDown(trackbar$, stepsize$)