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Home » Newsletter » January 2016

There is already an article explaining how to export from THTMLViewer using eDocEngine. However, it tried to solve a bit more complicated problem (for a customer who wanted to export from XML to PDF) and is hence a bit convoluted. It applies an XSL stylesheet to XML data, generates a HTML page and then exports it to PDF.

Here is a more straight-forward version. The THTMLViewer component is from http://www.songbeamer.com/delphi/, who provided an updated version of David Baldwin's HTML Display Components (ThtmlViewer, TFrameViewer, and TFrameBrowser). A copy of it is also shipped with eDocEngine.

In this video, the THTMLViewer package is installed from source and then used in a VCL Forms application project to export a HTML page to PDF.

Here is the code. It convert a HTML document found in the RAD Studio folder. Please note that THTMLViewer can display only simple documents.

procedure TForm1.Button1Click(Sender: TObject);
begin
  // gtHtmlViewInterface1.Engine := gtPDFEngine1; // or any other engine
  gtPDFEngine1.FileName := 'html_export.pdf';
  gtHtmlViewInterface1.RenderDocument(HTMLViewer1);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  HTMLViewer1.LoadFromFile('C:\Program Files\Embarcadero\RAD Studio\12.0\deploy_en.htm');
end;