Library:constructor()

Library:constructor([lib])constructor

The Library constructor creates a new Library instance, that represents a Windows DLL.
Once the Library is loaded, its exported symbols are accessible using the returned Library instance.

Parameters

[lib]

An optional string representing the Windows dynamic library to load.
The string can be a full path or a DLL name in the current path.

Notes

When the lib parameter is omitted, the C runtime library will be loaded.
DLL embedded in the current compiled executable are loaded seamlessly.
If the provided library cannot be loaded, the constructor returns nil (use sys.error to get the error message).

Return value

The constructor returns a new Library instance.

Example


--! luart-extensions
import c

-- loads the C runtime library
local crt = c.Library()       

-- Use the Library instance to define the C function "printf()"
crt.puts = "(Z)"

-- Calls the just defined C function
crt.puts("Hello LuaRT")