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    nsIWinAppHelper

    Used on Windows only to do some work from a special process that gets created with elevated privileges.
    1.0
    28
    Introduced
    Gecko 1.8
    Inherits from: nsISupports Last changed in Gecko 1.9.2 (Firefox 3.6 / Thunderbird 3.1 / Fennec 1.0)

    Implemented by: @mozilla.org/xre/app-info;1. To create an instance, use:

    var xulAppInfo = Components.classes["@mozilla.org/xre/app-info;1"]
                     .getService(Components.interfaces.nsIWinAppHelper);
    

    The nsIXULAppInfo and nsIXULRuntime interfaces are also implemented by "xre/app-info".

    Method overview

    void fixReg(); Obsolete since Gecko 1.9
    void postUpdate(in nsILocalFile logFile); Obsolete since Gecko 1.9.2

    Attributes

    Attribute Type Description
    userCanElevate boolean

    Read only. Returns true only if all the following conditions are all true at once:

    • The operating system is at least Windows Vista
    • User Account Control is enabled
    • The user is an Administrator
    • The application is not already running with elevated permissions

    Otherwise it returns false.

    Methods

    Obsolete since Gecko 1.9 (Firefox 3)

    fixReg()

    Invokes helper.exe with the /fixreg parameter. Note that this parameter was never actually supported.

    void fixReg();
    
    Parameters

    None.

    Obsolete since Gecko 1.9.2 (Firefox 3.6 / Thunderbird 3.1 / Fennec 1.0)

    postUpdate()

    Invokes helper.exe with the /postupdate parameter. This updates the uninstallation log so that the application can be uninstalled correctly after an update.

    void postUpdate(
      in nsILocalFile logFile
    );
    
    Parameters
    logFile

    The file to use for the uninstallation log. The path is passed to helper.exe as the /uninstalllog parameter.

    Document Tags and Contributors

    Contributors to this page: Sheppy, trevorh, Neil
    Last updated by: Sheppy,