Hi Jacques Sautier,
Sorry for the delay being caused.
Please download the sample attached with this forum.
In the sample we have used the event ‘PreviewMouseDown’ in Docking Manager control. On Double Click we have cancelled this event. Now the double click on header doesn’t change the Window state to ‘Float’.
Please let us know in case of any other queries.
Regards,
P.Dinesh Kumar
DM_NoFloat_DoubleClick_50bb8007.zip