is an option to functions such as CreateDialog that specifies whether the dialog that is created should be modal to the Wolfram System front end.


  • With the default setting Modal->False, other windows can be used even when the dialog is open.
  • With Modal->True, no other Wolfram System windows can be used until the dialog has been closed. If there is no mechanism for closing the dialog, the Wolfram System will therefore effectively freeze.


Basic Examples  (1)

Create a modal dialog that blocks operations in other open notebooks:

Introduced in 2007