'trackbar ticks
' 从一个搜索栏中移除当前标记。这消息不删除第一个和最后一个标记，这是由搜索栏自动创建。
'  hTrackbar : The handle of the track bar. (e.g. HWND_FORM1_SLIDER1)
'  fRedraw   : Redraw flag. If this parameter is TRUE, the trackbar is redrawn after 
'              the tick marks are cleared. If this parameter is FALSE, the message clears the tick 
'              marks but does not redraw the trackbar.
Sub FF_TrackBar_ClearTics (ByVal hTrackbar As HWND, ByVal fRedraw As Long)

    SendMessage hTrackbar, TBM_CLEARTICS, fRedraw, 0

End Sub
