继承Memo,并增加一个String字段,请给出完整的代码!
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SysUtils, Classes, Controls, StdCtrls;type
TMyMemo = class(TMemo)
private
{ Private declarations }
protected
{ Protected declarations }
public
{ Public declarations }
MyString:String;
published
{ Published declarations }
end;procedure Register;implementationprocedure Register;
begin
RegisterComponents('Samples', [TMyMemo]);
end;end.
unit MyMemo;interfaceuses
SysUtils, Classes, Controls, StdCtrls;type
TMyMemo = class(TMemo)
private
FMyString: String;
{ Private declarations }
protected
{ Protected declarations }
public
{ Public declarations }
published
{ Published declarations }
property MyString:String read FMyString write FMyString;
end;procedure Register;implementationprocedure Register;
begin
RegisterComponents('Samples', [TMyMemo]);
end;end.