direktor05

DAMN, I just discovered there is also TJsonTreeView component. Delphi 10.4. A nono, its a component I installed. Made by some Polish guy at Embarcadero.

thanks

No I want to make a tool to create HTML menus. So I want a treeview that will be just like a website menu then export to json and read with javascript. The menu must not only have name, but also link url, onclick event description and parent/child id, stored in tTreeview1.items.data pointer.

Or give me some code snippet to parse TTreeView, then will make json manually

Hello,

Is there a TTreeview component that can export items to JSON? Probably not or is very simple, because I also need to export data associated with a node which is in Pointer to Json.

Any suggestion welcome.

Hello,

Is there a TTreeview component that can export items to JSON? Probably not or is very simple, because I also need to export data associated with a node which is in Pointer to Json.

Any suggestion welcome.

Full Json:

{"result":  [{
      "animals":
      [{
          "id":1,
          "name":"pig",

        } ]
    } ]
}

Hello,

How do I parse this Json:

{"result": [{
      "animals":
      [{
          "id":1,

         "name":

So.... I parse Json first:

jsonobject := TJsonObject.ParseJSONValue(RestResponse.Content) as TJsonObject;

Then I get to "animals":[{"id".... now here gets complicated. How do I parse further to get ID and name? Parse Json further or parse Json Array? Can someone help with some example code please?

Ok Ladies and G... Ladies, here is the macho man solution for the brave.

FileCrypt2.zip

Ok boss, got it. When I solve the problem of shooting myself Ill post it here. 🙂

Ah you used LockBox component... what a shame! Real professionals don't use other people's components they make their own. But it's OK, it works.

Thanks teacher 🙂

Should not use FileStream or MemoryStream, no stream at all, just readblock - encrypt block - write block

Ok thanks I think the problem with the above code is that it gives whole file buffer as input while only 16 B is acceptable. Thats why it takes first 16 B and the rest throws away. The right way should be ReadBlock 16 by 16 B until EOF and perform readblock 16B - encrypt 16B - write 16 B until EOF.

This doesnt work:

var
  Source, Dest: TFileStream;
  SrcFile, DestFile: string;
  Start, Stop: cardinal;
  Size: integer;
  SourceKey,NewKey: AESBlock;
  Key: AES128Key;
  SrcBuf, DstBuf: array [0..16383] of byte;
  SrcSize, DstSize: integer;
  MyInBlock, MyOutBlock: AESBlock;
begin
    Source := TFileStream.Create(txtFile.Text, fmOpenRead);
    DestFile := ExtractFilePath(Application.ExeName) + 'aestemp.enc';
    Dest := TFileStream.Create(DestFile, fmCreate);
    try
      Size:=Source.Read(SourceKey,SizeOf(SourceKey));
      if Size<>SizeOf(SourceKey) then
        raise Exception.Create('Unable to read SourceKey from file.');

      FillChar( Key, SizeOf(Key), 0 );
      Move( PAnsiChar(AnsiString(txtPassword.Text))^, Key, Min( SizeOf( Key ), Length( txtPassword.Text ) ));

      //FillChar( MyInBlock, SizeOf(MyInBlock), 0 );
      //Move(Source.ReadBuffer(SrcBuf,Size), MyInBlock, Min( SizeOf( MyInBLock ), Size ));

      NewKey:=AES128Cipher(SourceKey,Key);
      Dest.WriteBuffer(NewKey,SizeOf(NewKey));
      //AES128Cipher(Source,Key)

      //Dest.WriteBuffer(AES128Cipher(Source,Key),Size);
    finally
      Dest.Free;
      Source.Free;
    end;
    showmessage('Finished');

Yes, but its component. Is there any standalone unit? Like this one: https://github.com/stijnsanders/tools - has standalone units in crypto folder, but unfortunately they do not produce accurate results: https://github.com/stijnsanders/tools/tree/master/crypto 

https://github.com/stijnsanders/tools/blob/master/crypto/aes.pas - when encrypting binary file I get only 16 B file back. But no error when building/compiling.

Hello, does anybody know of any good Delphi AES (or similar) unit to encrypt/decrypt binary files? I found plenty however none works well - there is loss of information or can only encrypt/decrypt strings. Must be able to encrypt/decrypt binary file without loss of information - after decrypting back to original the exe file must be exactly the same in size.

Help is needed.

https://www.youtube.com/watch?v=Q1BQ_6w8whc

Im using Windows 7

Hello,

Can someone tell me how to set Lazarus to build for Linux? When I try to set up builder is gives some error that that system.ppu for this target (Linux) was not found. Maybe some libraries for Linux are missing? Where to get them? How to set this up properly?

Hello,

I started with Turbo Pascal 5.0 in 1994 under DOS 5.0 then moved to Delphi 3,4,5,6,7... up to Delphi 10. Worked on financial/accounting/ERP software mostly. More details/CV/code samples on demand by email. Remotely at the beginning until virus epidemic isn't over.