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There is web page, that has the "Print" button. I load it using DCEF3. If user clicks the button, the Printer selection dialog is shown. I want to disable printing once and for all. I have been trying to pass command line parameters using the example. So, I tried the following:

--disable-print-preview
--kiosk
--kiosk-printing

But none of them did the trick. Am I missing something?

Tom Brunberg
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Edijs Kolesnikovičs
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1 Answers1

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CEF3 doesn't support "silent" printing, that is, printing without a printer selection dialog.

All you can do is :

  • Print to a temporal PDF file and then print the PDF file.
  • Take a snapshot from the browser and print the bitmap.
  • Modify the CEF3 libraries to hide the printer selection dialog.

These functions are much easier to use with CEF4Delphi or OldCEF4Delphi. To print in a PDF file all you have to do is call TChromium.PrintToPDF and to take a snapshot you need to call TChromium.TakeSnapshot

Not all the Chromium flags or command line switches are supported by CEF3. --kiosk and --kiosk-printing are not supported as you can see here.

You may even have to modify the JavaScript code in that web page to replace the "print" button function with a custom JavaScript extension registered with CEF3. That extension would send a message to the main browser process to print using your custom function.

Salvador Díaz Fau
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