Dialog Box

This list gives an overview of all defined noise barriers. For each noise barrier, the following is shown: identity, the barrier's length and width, whether the barrier is reflecting (Y) or not (N), and also whether the barrier is active or passive.

Find it here:

MOUS_ICO Menu: Noise > Barriers > Dialog box


nco: Select a barrier

MOUS_ICO Popup menu: Dialog box

This list allows the user to select multiple barriers for the functions Delete, Active, Passive, RefOn, RefOff and Show selection <. If you want to change the barrier or edit the height, only one barrier can be selected.

Object handling

Window handling



AutoCAD does not allow more than 255 lines in a list to be selected at a time. If more than 255 objects are selected, a message will appear at the bottom of the screen, that the list cannot be used directly. This means that more than 255 objects cannot be selected by clicking the list, and that the functions Select All, Invert, Reset and/or From screen have to be applied when more than 255 objects are to be selected. We cannot see from the list which objects are selected, but Selected will show the number, and the functions for the relevant objects do work!


In the Filter, we can specify which barriers are to be shown in the list.



Next topic: Edit