When in the main mask dw_1 several TAB's are inserted, it should no longer be "scrolled" with the mouse wheel, otherwise the image contents will be destroyed.

 

Therefore exists the global function scrollvertical, which is called in the case of a vertical scroll.

With this syntax, the vertical scroll can be prevented.

 

global function scrollvertical
// only cancel the vertical scroll, if dw_1 have the current focus
if <sys_currentdwfocus> = dw_1 then
   dw=datawindow.verticalscrollposition=0
end if
// set focus to dw_2
dw_2.setfocus
end global