gtk:file-chooser-do-overwrite-confirmation (object)

object -- a gtk:file-chooser widget
confirm -- a boolean whether to confirm overwriting in :save mode

Accessor of the do-overwrite-confirmation slot of the gtk:file-chooser interface. The gtk:file-chooser-do-overwrite-confirmation function queries whether the file chooser in :save mode is set to confirm for overwriting when the user types a file name that already exists. The (setf gtk:file-chooser-do-overwrite-confirmation) function sets whether the file chooser will present a confirmation dialog. This is false by default.

Regardless of this setting, the chooser will emit the "confirm-overwrite" signal when appropriate.

If all you need is the stock confirmation dialog, set this property to true. You can override the way confirmation is done by actually handling the "confirm-overwrite" signal. Please refer to its documentation for the details.