whats new ¦  programming tips ¦  indy articles ¦  intraweb articles ¦  informations ¦  links ¦  interviews
 misc ¦  tutorials ¦  Add&Win Game

Tips (1548)

Database (90)
Files (137)
Forms (107)
Graphic (116)
IDE (21)
Indy (5)
Internet / LAN (131)
IntraWeb (0)
Math (76)
Misc (127)
Multimedia (45)
Objects/
ActiveX (51)

OpenTools API (3)
Printing (35)
Strings (83)
System (268)
VCL (243)

Top15

Tips sort by
component


Search Tip

Add new Tip

Add&Win Game

Advertising

18 Visitors Online


 
...encrypt/decrypt files with windows NTFS functions?
Autor: Simon Grossenbacher
Homepage: http://www.swissdelphicenter.ch
[ Print tip ]  

Tip Rating (9):  
     


{....}

{
Dieser Tip funktioniert ab Windows 2000 (NTFS 5)

Diese 2 Funktionen sind in windows.pas definiert, jedoch sind sie dort
falsch definiert. Deshalb hier die eigene Definition.
}


{
This tip works with Windows 2000 (NTFS 5) and later

These 2 functions are defined in windows.pas, but they're defined wrong. In this
case our own definition.
}

  
function EncryptFile(lpFilename: PChar): BOOL; stdcall;
           external advapi32 name 'EncryptFileA';

  function DecryptFile(lpFilename: PChar; dwReserved: DWORD): BOOL; stdcall;
           external advapi32 name 'DecryptFileA';
           
           
{....}


procedure TForm1.Button1Click(Sender: TObject);
begin
  if not 
EncryptFile('c:\temp') then
    
ShowMessage('Can''t encrypt directory.');
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  if not 
DecryptFile('c:\temp', 0) then
    
ShowMessage('Can''t decrypt directory.');
end

 

Rate this tip:

poor
very good


Copyright © by SwissDelphiCenter.ch
All trademarks are the sole property of their respective owners