Question

“How do I toggle the page orientation from the preview window?”

Solution

Create a preview plugin that creates a new button to alter the page orientation of the report and regenerate when clicked.

Download: ToggleOrientationPlugin.zip

Sample Delphi code:

type

  TmyToggleOrientationPlugin = class(TppPreview)
    private
      FOrientationButton: TppTBXItem;

      procedure OrientationButtonClickEvent(Sender: TObject);

    public
      procedure CreateToolbarItems; override;

    end;

implementation

uses
  Printers, SysUtils,
  ppReport, ppDevice, ppUtils, ppPrnDev, 
  ppToolResources;

procedure TmyToggleOrientationPlugin.CreateToolbarItems;
begin

  inherited CreateToolbarItems;

  FOrientationButton := Toolbar.AddButton();
  FOrientationButton.ImageIndex := ToolImageList.AddTool('PPZOOMPAGEWIDTH');  //Replace with your own.
  FOrientationButton.OnClick := OrientationButtonClickEvent;
  FOrientationButton.Hint := 'Toggle Orientation';

end;

procedure TmyToggleOrientationPlugin.OrientationButtonClickEvent(Sender: TObject);
var
  lReport: TppReport;
begin

  lReport := TppReport(Viewer.Report);

  try
     
    case lReport.PrinterSetup.Orientation of
      poPortrait: lReport.PrinterSetup.Orientation := poLandscape;
      poLandscape: lReport.PrinterSetup.Orientation := poPortrait;
    end;

   finally
     TppReport( Viewer.Report).Engine.Reset;
     Viewer.Reset;
     Viewer.Report.PrintToDevices;
   end;

end;

initialization
  TppPreviewPlugIn.Register(TmyToggleOrientationPlugin);

finalization
  TppPreviewPlugIn.UnRegister(TmyToggleOrientationPlugin);


end.