(Delphi DLL) Unpack MHT to Files

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Demonstrates how to unpack a .mhtml to files. Unpacks the HTML and to a directory, and image files to a sub-directory located under the directory where the HTML file is unpacked. The image links in the HTML are updated to point to the image files.

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, Mht;

...

procedure TForm1.Button1Click(Sender: TObject);
var
mht: HCkMht;
mhtPath: PWideChar;
unpackDir: PWideChar;
htmlFilename: PWideChar;
partsSubDir: PWideChar;
success: Boolean;

begin
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

mht := CkMht_Create();

// This should be an absolute or relative path to the MHT file.
// It is the MHT to be unpacked.
mhtPath := 'qa_data/mht/test.mht';

unpackDir := 'C:/AAWorkarea/mht_unpack';
htmlFilename := 'test.html';
partsSubDir := 'images';

// Unpacking will create the HTML file C:/AAWorkarea/mht_unpack/test.html
// The image files are unpacked to C:/AAWorkarea/mht_unpack/images
// The unpackDir and partsSubDir are automatically created if needed.

success := CkMht_UnpackMHT(mht,mhtPath,unpackDir,htmlFilename,partsSubDir);
if (success = False) then
  begin
    Memo1.Lines.Add(CkMht__lastErrorText(mht));
    Memo1.Lines.Add('Failed.');
  end
else
  begin
    Memo1.Lines.Add('Success.');
  end;

CkMht_Dispose(mht);

end;