[Groucho2004]

Originally Posted by TheFluff

There's nothing that says the current directory is the plugins folder.

You're right, brain fart.

This would work to get the fully qualified path to the plugin when called from the plugin (I assume that's what you meant by "You can actually get a DLL's own path though using some other mildly exotic win32 API gymnastics"):

HMODULE GetCurrentModule()
{
 HMODULE hModule = NULL;
 GetModuleHandleEx(
  GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
  (LPCTSTR)GetCurrentModule,
  &hModule);

 return hModule;
}

HMODULE hm = GetCurrentModule();
char szPath[MAX_PATH + 1];
GetModuleFileName(hm, szPath, MAX_PATH);

Note: No error handling whatsoever in this code ;-)