How to distribute XPCOM component via XPI for FireFox 3?

Question

I wrote an XPCOM component and an extension that uses it. XPCOM loads arbitrary DLL for its purposes.

How can I include XPCOM and DLL into XPI package?

Answer 1

I was able to find absolute path to my DLL via IExtensionManager and IInstallLocation, then load it via LoadLibrary().

1. put DLL near XPCOM in my.xpi/components/
2. figure out the path to extension via IExtensionManager and IInstallLocation
3. LoadLibrary()
4. profit

Answer 2

XPI is basically a zip file, which includes the DLL, among other things See https://developer.mozilla.org/En/Creating_XPI_Installer_Modules