eDocEngine VCL
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Home » Newsletter » July 2007

By R. Vyshakh and D. Ashwini (German version)

In this article, we will demonstrate how to use eDocEngine VCL to convert several image files to a single or multiple PDF documents.

Use gtPDFEngine component for creating PDF document

• Drop gtPDFEngine component on the form from the eDocEngine palette in Delphi.
• Drop a button component on the form.
• Handle OnClick event of the button and use gtPDFEngine component to start creating the PDF.

Set properties of gtPDFEngine for setting page size

• Set ProcessAfterEachPage property to True.
• Set MeasurementUnit to muPixels.

...

gtPDFEngine1.Preferences.ProcessAfterEachPage := True;
gtPDFEngine1.MeasurementUnit := muPixels;

...

Page.PaperSize := Custom;
Page.Width := Image1.Picture.Width;
Page.Height := Image1.Picture.Height;

...

Render images to a single or multiple PDF files

• Add image files (BMP, JPEG, WMF or EMF) which need to be rendered.
• Use method gtPDFEngine1.DrawImage(...) to render the image on PDF file.
• If an image is a metafile it will be rendered as a raster image.
• Use method gtPDFEngine1.PlayMetafile(...) to render the metafile as vector image on the PDF.

The complete source code is available in downloads section.

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Downloads

• Zipped project files
• Complete executable demo