XPLMFindPluginByPath

XPLMFindPluginByPath

XPLM_API XPLMPluginID         XPLMFindPluginByPath(
                                   const char *         inPath);    

This routine returns the plug-in ID of the plug-in whose file exists at the passed in absolute file system path. XPLM_NO_PLUGIN_ID is returned if the path does not point to a currently loaded plug-in.