I don't think you can do that in a CheckedListBox....
You could create a FlowLayoutPanel
, with a fixed width and add AutoScroll = True
.
Then add a number of CheckBox
controls to it.
You could have problems regarding column alignment and margins. If that's the case, you can set the checkbox Autosize = False and make them a little larger (in order to contain the text)
Or you can reduce the Height of the checkboxes to reduce spaces (is this what you want?)
eg. Height = 15