RE: Exporting function from an .exe to be used by loaded .dll

From: Russ Keldorph [MS] (russellk_at_online.microsoft.com)
Date: 03/03/04 

Date: Wed, 03 Mar 2004 23:00:40 GMT

Unfortunately, you've discovered a limitation of the CE loader. Unlike XP,
CE will only load and resolve exports from a module with the IMAGE_FILE_DLL
bit set in the PE header, i.e. real DLLs. This design won't work under CE. 

-- 
Russ Keldorph
russellk@online.microsoft.com (Remove the 'online.' from my address to 
reach me.)
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--------------------
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> Subject: Exporting function from an .exe to be used by loaded .dll
> Date: 3 Mar 2004 08:43:22 -0800
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> 
> I have the following design.
> 
> Build host appname.exe that exports some useful functions.  When I
> compile this, appname.lib is created with the exported files.
> 
> Create plugin dlls that link with appname.lib and are loaded at run
> time by the host appname.exe using LoadLibrary(plugin_name).  These
> plugins can use all the functions exported by appname.exe.
> 
> I have this design coded and working flawlessly on Windows XP.  Using
> the same code base I then created my CE.net version in EVC4.  When I
> run appname.exe on CE (in the emulator  - no hardware yet) the plugins
> do not load and GetLastError() returns 193 - Bad EXE Format.
> 
> I can't figure out why this is happening.
> 
> As a test I created a simple .exe and simple .dll in EVC4.  The exe
> exports one function and the dll uses it.
> 
> The dll load failed with the same error but as soon as I remove the
> exported function from the exe and its reference from the dll it loads
> fine.
> 
> This design is critical to my application - any help is appreciated.
>

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