Extension Properties

Command

Points the path of the program associated with the extension. You can change the program by using the [ Browse... ] button to select another one from the project.

MIME type

Defines the content type of the files with the selected extension. This content type will be used by the browsers to select an application to handle a downloaded file. Leave this field empty if you do not want to register a MIME type for the files with the current extension.

Consult the IANA registry online for a list of assigned MIME Media Types.

During installation of a MIME type Windows Installer registers the MIME type under the Internet Explorer MIME Database too ("HKEY_CLASSES_ROOT\MIME\Database\Content Type" registry key). Considering the method how Internet Explorer handles MIME Types, it is not recommend to register the "application/octet-stream" MIME type with your application extension. This is because after registering the "application/octet-stream" MIME type with your application extension, Internet Explorer could associate all downloaded files of "application/octet-stream" MIME type with your application extension.

Feature

The feature which controls the extension installation. If this feature is not installed, the file associations is not made.

This combo box shows only features which contains the extension component.