Conversion between Delphi string, Pchar, and character array

Conversion between Delphi string, Pchar, and character array

Conversion between Delphi string, Pchar, and character array
The following three variables are available:
Var
s:string;
P:pchar;
A:ARRAY[1..20] of Char;
Then the conversion between the three is as follows:
1. String to Pchar
P:=pchar (s);
2, Pchar to String
S:=p;
3, Pchar to character array
Strcopy (@a, p);
4, character array to Pchar
PChar (@a);
5, the conversion between the string and the character array can only be brokered by Pchar. For example, the following example:
Procedure Tform1.btn1click (Sender:tobject);
Var
STR:ARRAY[1..10] of Char;
Begin
Strcopy (@str, PChar (mmo1. Text));
Mmo2. Text:=pchar (@str);
End

Conversion between Delphi string, Pchar, and character array