disable "Open existing document by double clicking here"

[docu-track99]

In the pdf control when there is no pdf loaded you can see text in the background saying "You may open an existing document by double clicking here". Double clicking will then open an open dialog and allow the user to open any pdf they wish. However we need to be in full control of every way a user can open a pdf. We would like to disable this feature but we are not sure how. Is there a way to disable this feature and if so what code would I use to do it? Thanks.

[Vasyl - PDF-XChange]

You can disable this feature as follows :
SetProperty("General.AllowOpenDocumentByDblClick", "false", 0);