Function that is called when the host application no longer needs the plug-in.
PLUGIN_API int __stdcall IF_Free();
For a description of return values, see Return Values.
The host application will call this function once when it no longer needs the plug-in. After IF_Free() is called, no other entry points may be called. Normally, IF_Free() will be called immediately before unloading the plug-in DLL using FreeLibrary().
IF_Free() will not be called if IF_Init() failed.
The main purpose of IF_Free() is to give the plug-in a chance to free any DLLs it has dynamically loaded with LoadLibrary().
Header: IF_PlugIn.h