Returns the a child of the control given its position.
Ihandle *IupGetChild(Ihandle* ih, int pos); [in C] iup.GetChild(ih: ihandle, pos: number) -> child: ihandle [in Lua]
Returns: the child or NULL if there is none.
This function will return the children of the control in the exact same order in which they were assigned.
IupGetChildPos, IupGetNextChild, IupGetBrother, IupGetParent