TOleContainer (Delphi)

Description

This example uses an OLE container and a main menu on a form. When you click the Open or Save options in the main menu, an open/save dialog is displayed and, by default, you are required to enter the name of a Word document. Files with other extensions supported by the OLE container can also be accessed. An additional test is made to assure that the file to open exists and that no file overwriting is going to take place.

Code

procedure TForm1.Exit1Click(Sender: TObject);
begin
  Close;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  OpenDialog1.Filter := 'Documents (*.doc)|*.DOC|Any file (*.*)|*.*';
  SaveDialog1.Filter := 'Documents (*.doc)|*.DOC|Any file (*.*)|*.*';
end;

procedure TForm1.Open1Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
    if FileExists(OpenDialog1.FileName) then
      OleContainer1.CreateObjectFromFile(OpenDialog1.FileName, false)
    else
      raise Exception.Create('File not found.');
end;

procedure TForm1.Save1Click(Sender: TObject);
begin
  if SaveDialog1.Execute then
    if FileExists(SaveDialog1.FileName) then
      raise Exception.Create('File already exists. Cannot overwrite.')
    else
      OleContainer1.SaveAsDocument(SaveDialog1.FileName);
end;

Uses

• Vcl.OleCtnrs.TOleContainer.CreateObjectFromFile ( fr | de | ja )
• Vcl.OleCtnrs.TOleContainer.SaveAsDocument ( fr | de | ja )