Adding buttons for certain reports

rbuser

Hello

Our application has several reports

Is there a way to add buttons to the viewer for certain reports only? The
method suggested in your articles seems to involve creating a descendant
class of TppPreview which is created in the initialization of the unit

I am using Report Builder 10.07

Cheers

Paul

nicocizik

Hi Paul,

Yes, the easiest way to accomplish this would be to create a custom Preview
plugin that contains the added buttons for certain reports. Then, based on
which report template is loaded, register or unregister the proper preview
plugin to show or hide the buttons.

Take a look at the ppPreview.pas file for how the original previewer is
made.

-----------------------------------------
Article: Creating a Preview Plugin
-----------------------------------------

You will need to register a TppPreview descendent. The class you register
is used to create the preview controls inside the standard print preview
form and the designer preview workspace.


Here is an example of creating a simple custom preview that access the
viewer its been assigned in order to change the page color. You can also do
more advanced operations such as adding and removing buttons and change the
behavior of the preview form. Access the inherited controls via. protected
properties and override the virtual methods in order to customize behavior.

Open ppPreview.pas and view the TppPreview class as a guide to create a
custom preview descendent.


unit MyPreviewPlugin;

interface

uses
ppPreview;

type
TMyPreviewPlugin = class(TppPreview)
public
procedure BeforePreview; override;

end;


implementation

uses
Graphics;


procedure TMyPreviewPlugin.BeforePreview;
begin
inherited BeforePreview;

Viewer.PageColor := clRed;

end;

initialization
TppPreviewPlugIn.Register(TMyPreviewPlugin);

finalization
TppPreviewPlugIn.UnRegister(TMyPreviewPlugin);

end.

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com