ExportDocument - Image options

[michael wagmann]

Hi,

I want to automate a PDF to image (png) export process. I had a look into the FullDemo example (and the documentation) but couldnt find any properties to set options for specific image formats. I am able to set the dpi and file format but I also need to set the color bit depth, i.e. Indexed 8bpp.
Is there any possibility to specify PNG-Options that are available in the ExportDocument dialog when calling the ExportDocument function without GUI?

Regards,
Simon

[Stefan - PDF-XChange]

Hello Simon,

Have you checked the Simple Viewer DLL SDK as well?
It allows you to render the pages to e.g. a DeviceContext, and then use that raster image data to generate the needed image file format yourself?

I do not think there's a way to control e.g. the bpp values for the Viewer AX export to images methods.

Regards,
Stefan

[Vasyl - PDF-XChange]

Hi Simon.

Is there any possibility to specify PNG-Options that are available in the ExportDocument dialog when calling the ExportDocument function without GUI?

Only one way exists. You may, like end-user, launch our EU-Viewer, open any pdf, show export-dialog and setup export-to-png options and press OK to remember your new options. Then you may export all viewer's settings to a file. Then you will be able to use this file to load customized settings each time when your program starts(by pdfControl.LoadSettings("...\MyPDFVSettings.dat"), see also pdfControl.SaveSetting(..))).
Sure, end-user will be able to change your custom png-options in UI mode, but no way to prevent it only in Export2Image dialog - you must prevent showing this dialog (by disabling the corresponding UI-command in menu/toolbar).

HTH.

[michael wagmann]

Thanks, that works for me!

[Stefan - PDF-XChange]