obj_set_parent

obj_set_parent sets the parent object.

bool = obj_set_parent(obj, parent)

Return Value

bool is TRUE (1) if the function could set the parent successfully.

Parameters

obj

obj is the object created with obj_create.

parent

parent is an object created with obj_create.

Comment

The obj_set_parent function copies all key-value pairs from parent to obj and saves a reference of the parent object. obj “inherits” all properties of its parent.The child object will also inherit all parent methods. If obj.name(1,2) is invoked and P obj does not possess a method name, the parent function will be invoked obj.parent.name(1,2). If the parent does not possess a function a method name its parent object is invoked-Objekten obj.parent.parent.name(1,2) and so on.

Example

Create an object with one property with the name type. This object could be used as a base object for other objects:

def object_set_type(o, tp)
{
    o["$type"] = tp;
}
def object_get_type(o)
{
    return o["$type"];
}
def object_create(_type)
{
    o = obj_create();
    o["$type"] = _type;
    f = obj_create();
    f.__setprop__ = obj_create();
    f.__setprop__.type = "object_set_type";
    f.__getprop__ = obj_create();
    f.__getprop__.type = "object_get_type";
    o.set_methods(f);
    return o;
}
def my_obj()
{
    o = obj_create();
    p = object_create("my_obj");
    o.set_parent(p);
    return o;
}
o = my_obj();
print o.type

See also

Overview UniScript Objects, obj_parent, obj_set_methods

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