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Editorial Team
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Editorial Team
Asked: May 27, 20262026-05-27T16:15:23+00:00 2026-05-27T16:15:23+00:00

Previously, I created XPCOM dll for the mozilla version 3.6 and XulRunner version of

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Previously, I created XPCOM dll for the mozilla version 3.6 and XulRunner version of 1.9.2.

Now I try to update that xpcom dll for the mozilla recent versions namely 4 and above.

So I downloaded Xul Runner above version but I couldn’t find nsIGenericFactory.h.

How to work my xpcom dll for the mozilla 4 and above versions.

Actually I used the following sample to develop XPCOM DLL.

http://www.iosart.com/firefox/xpcom/

Thanks..

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  1. Editorial Team
    Editorial Team
    2026-05-27T16:15:24+00:00Added an answer on May 27, 2026 at 4:15 pm

    Since Mozilla 4.0 is using Gecko 2.0 this applys to your situation:

    Quoting the XPCOM changes in Gecko 2.0:

    Note that nsIGenericFactory.h has been removed.
    References to nsIGenericFactory.h should be replaced with mozilla/ModuleUtils.h

    After doing so, you would have to recompile all XPCOM components following the instructions from https://developer.mozilla.org/en/XPCOM/XPCOM_changes_in_Gecko_2.0

    There is a topic about this problem in the mozilla forum too.

    The headerfile is provided on this site: nsIGenericFactory.h

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