winapi - Deadlock when adding COM GUI component to HWND of other process (Firefox, Plugin, IExplorerBrowser) -


i trying embed iexplorerbrowser (the main gui of windows explorer) firefox xul or html page.

the instance of iexploerbrowser created using js-ctypes in firefox-process ( clsctx_inproc_server | clsctx_inproc_handler. i've tried clsctx_local_server, fails).

to make integration easier, adding iexplorerbrowser child of hwnd of npapi plugin instance (like flash). plugin hwnd passed initialize. way firefox can still overlay html elements, etc. firefox runs npapi plugins in own process, hwnd of plugin instance hosted in process.

most things work fine. can navigate using explorerbrowser, when try use splitter between tree view , list view, end in deadlock.

i still have same problem, when create window child of plugin window js-ctypes (process: firefox.exe) , add explorerbrowser it.

i suspect deadlock has wndprocs of plugin window, firefox window , explorerbrowser, don't know how fix problem.

any ideas? lot!

p.s. able write own npapi plugin, if (though still run in process). plugin able synchronously communicate javascript code of firefox-process.

p.p.s windows hooks or subclasswindow of help? (i may able subclass window wndproc created js-ctypes in firefox-process)


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