# DLLLib user defined functions Reference

Below is a complete list of the user defined functions available in AutoIt. Click on a user defined function name for a detailed description.

When using them you need to add a #include <WinAPISys.au3>.

User Defined Function | Description
--- | ---
_WinAPI_GetDllDirectory | Retrieves the application-specific portion of the search path used to locate DLLs for the application
_WinAPI_GetModuleHandle | Returns a module handle for the specified module
_WinAPI_GetModuleHandleEx | Retrieves a module handle for the specified module
_WinAPI_GetProcAddress | Retrieves the address of an exported function or variable from the specified module
_WinAPI_SetDllDirectory | Adds a directory to the search path used to locate DLLs for the application