Click here to view and discuss this page in DocCommentXchange. In the future, you will be sent there automatically.
If this function is implemented and exposed in the external library, it is executed by the database server immediately before unloading the external library.
extern "C" void SQL_CALLBACK extfn_pre_unload_library( void );
This function is required only if there is a library-specific requirement to do library-wide cleanup before the library is unloaded.
This function is called asynchronously by the database server immediately before unloading the external library.
extern "C" __declspec( dllexport ) void SQL_CALLBACK extfn_pre_unload_library( void ) { MessageBox( NULL, "Library unloading", "SQL Anywhere", MB_OK | MB_TASKMODAL ); }
Syntax