Inherited: what changed

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Title: Inherited

New		Line
1	+	Back to [[Reserved words]].
2	+
3	+	In an overridden virtual [[Method\|method]], it is often necessary to call the parent [[Class\|class]]’ implementation of the virtual method. This can be done with the `inherited` [[Reserved word\|reserved word]]. Likewise, the `inherited` [[Keyword\|keyword]] can be used to call any method of the parent `class`.
4	+
5	+	This case is the simplest:
6	+
7	+	``` pascal
8	+	Type
9	+	TMyClass = Class(TComponent)
10	+	Constructor Create(AOwner : TComponent); override;
11	+	end;
12	+
13	+	Constructor TMyClass.Create(AOwner : TComponent);
14	+	begin
15	+	Inherited;
16	+	// Do more things
17	+	end;
18	+	```
19	+
20	+	## Constructors and destructors case
21	+
22	+	[[Constructor]], example 1 :
23	+
24	+	``` pascal
25	+	...
26	+	TTest.Create;
27	+	begin
28	+	Inherited; // Always at the beginning of the constructors and start the constructor (code only) of the parent class
29	+	...
30	+	end;
31	+	```
32	+
33	+	`Constructor`, example 2 :
34	+
35	+	``` pascal
36	+	...
37	+	TTest.Create(...);
38	+	begin
39	+	Inherited Create(...); // Always at the beginning of the constructors and start the constructor (code only) of the parent class
40	+	...
41	+	end;
42	+	...
43	+	```
44	+
45	+	[[Destructor]], example 3 :
46	+
47	+	``` pascal
48	+	TTest.Destroy;
49	+	begin
50	+	...
51	+	Inherited; // Always at the end of the destructors and start the destructor (code only) of the parent class
52	+	end;
53	+	...
54	+	```
55	+
56	+	## Virtual methods override
57	+
58	+	``` pascal
59	+	type
60	+	TMyClass = class(TStrings)
61	+	function GetObject(Index: Integer): TObject; override;
62	+	end;
63	+
64	+	function TMyClass.GetObject(Index: Integer): TObject;
65	+	begin
66	+	// Get result from parent class method
67	+	Result := inherited GetObject(Index);
68	+	// Do something
69	+	end;
70	+	```
71	+
72	+	---
73	+	From the Free Pascal wiki, page "Inherited", as it stood on 2022-08-06 after a change by Kai Burghardt, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).

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