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Show the open with-dialog

{ This code displays the application/file "Open With" dialog Passing the full file path and name as a parameter will cause the dialog to display the line "Click the program you want to use to open the file 'filename'". } uses ShellApi; procedure OpenWith(FileName: string); begin ShellExecute(Application.Handle, 'open', PChar('rundll32.exe'), PChar('shell32.dll,OpenAs_RunDLL ' + FileName), nil, SW_SHOWNORMAL); end; procedure TForm1.Button1Click(Sender: TObject); begin if Opendialog1.Execute then OpenWith(Opendialog1.FileName); end;