Advanced.system.supportDDEExecFrom MozillaZine Knowledge Base
[edit] BackgroundThis preference’s purpose is a bit vague. It’s been used for plugin-related functions, as well as for determining how tabs and windows should open. It is perhaps best known as a preference to divert URLs from external applications to open in new tabs in an existing browser window. The vagueness is due to the fact that this preference deals with DDE, a method of communication between applications (different instances of Mozilla, or Mozilla and the desktop shell). In order for Mozilla to use DDE, it must be set to handle the [edit] Possible values and their effects[edit] TrueWhen started, Mozilla will check to see if it is handling the
This allows Mozilla to act as a DDE server and catch messages sent for the default [edit] FalseDo not set the DDE-related subkeys in the registry. [edit] Caveats
[edit] Previous effectsIn Firefox versions prior to 0.9, this preference caused links from external applications to open in an existing Firefox window instead of opening a new window. [edit] First checked in[edit] Has an effect inWindows versions only (not relevant on other OSes):
[edit] Related bugs
[edit] Related preferences[edit] External links |