> Subject: Self-deleting executable
The following code works.
**************************************************************************
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Label1: TLabel;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
procedure DeleteSelf;
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
//*********************************************************
procedure TForm1.DeleteSelf;
//*********************************************************
var
F: TextFile;
batName: string;
pi: TProcessInformation;
si: TStartupInfo;
begin
batName := ExtractFilePath(ParamStr(0)) + '$$$$$$$$.bat';
AssignFile(F,batName);
Rewrite(F);
Writeln(F,':try');
Writeln(F,'del "'+ParamStr(0)+'"');
Writeln(F,'if exist "'+ ParamStr(0)+'"'+' goto try');
Writeln(F,'del "' + batName + '"' );
CloseFile(F);
FillChar(si, SizeOf(si), $00);
si.dwFlags := STARTF_USESHOWWINDOW;
si.wShowWindow := SW_HIDE;
if CreateProcess( nil, PChar(batName), nil, nil, False,
IDLE_PRIORITY_CLASS, nil, nil, si, pi ) then
begin
CloseHandle(pi.hThread);
CloseHandle(pi.hProcess);
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
DeleteSelf();
//comment out to close when program is closed or uncomment
//to close the file instantly then delete
Close;
end;
end.