[-0, +0, -]
const void *lua_topointer (lua_State *L, int index);
Converts the value at the given acceptable index to a generic
C pointer (void* ).
The value can be a userdata, a table, a thread, or a function;
otherwise, lua_topointer returns NULL .
Different objects will give different pointers.
There is no way to convert the pointer back to its original value.
Typically this function is used only for debug information. |