The TBM_SETSELSTART message sets the starting position of the current selection in a trackbar.
TBM_SETSELSTART
wParam = (WPARAM) (BOOL) fRedraw;
lParam = (LPARAM) (LONG) lStart;
Parameters
fRedraw
Redraw flag. If this parameter is TRUE, the slider is redrawn after the selection is set.
lStart
Starting position of the selection.
Return Values
No return value.