1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
{
This example demonstrates the use of the Initialize and Finalize functions
used to initialize (and clean up) any RTTI-enabled data not allocated with
New or Create.
}
{$mode objfpc}
{$h+} // use ansistrings, they need to be initialized.
Type
PData = ^TData;
TData = record
Street,City,Zip,Country, Tel: String;
StreetNumber : Integer;
end;
var
Data: PData;
begin
// We use the fact that a pointer is also usable as an array.
GetMem(Data,SizeOf(TData)*2);
Try
{ Initialize the structure in memory, using Run-Time Type Information}
Initialize(Data^,2);
{ Assign some string data to the ansistring contents.
Note that this only works because the record was zeroed out by Initialize}
Data[0].Street:='Sesame Street';
Data[0].City:='Heaven';
Data[0].Zip:='7777777';
Data[0].Country:='Spain';
Data[0].StreetNumber:=3;
// Second, well known street
Data[1].Street:='Wall Street';
Data[1].City:='New York';
Data[1].Zip:='10005';
Data[1].Country:='USA';
Data[1].StreetNumber:=11;
Finally
{ Clean up the record contents.
Again, the structure of the record is detected through
Run-time Type Information }
Finalize(Data^);
FreeMem(Data);
end;
end.
|
