(Delphi DLL) Convert any File to Base64 (and back)

Demonstrates how to get the contents of any file as a base64 string, and then write it back.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, BinData;

...

procedure TForm1.Button1Click(Sender: TObject);
var
bd: HCkBinData;
success: Boolean;
b64Str: PWideChar;
bd2: HCkBinData;

begin
bd := CkBinData_Create();

// This example will load a PDF and return it as a base64 string.
success := CkBinData_LoadFile(bd,'qa_data/pdf/helloWorld.pdf');
if (success <> True) then
  begin
    Memo1.Lines.Add('Failed to load file.');
    Exit;
  end;

b64Str := CkBinData__getEncoded(bd,'base64');
Memo1.Lines.Add(b64Str);

// Now write the base64 string back to the binary PDF file:
bd2 := CkBinData_Create();
success := CkBinData_AppendEncoded(bd2,b64Str,'base64');
success := CkBinData_WriteFile(bd2,'qa_output/helloWorld.pdf');

CkBinData_Dispose(bd);
CkBinData_Dispose(bd2);

end;