How to disable auto opening of print dialog upon opening PDF

[SolidMercury]

PDF supports embedding JS. When this.Print() is called in that, opening PDF causes the print dialog to appear automatically. Is there a way to disable this print dialog? I am fine with patching chromium code too to disable this. Have already tried patching PDFium at https://pdfium.googlesource.com/pdfium. ... nt.cpp#511 to not to call JS_docprint but no luck with that? Any inputs on this would be appreciated.

Thanks.

[Peter]

Perhaps related - is there any way to intercept the .print() on C++ side? in my project here we want to provide out own print dialog...

I see that in Linux version of the CefClient there is a "print handler" that is being called, so it is possible to just cancel printing from there, but on Windows CEF seems to be opening the system print dialog directly.

[ndesktop]

Maybe setting bSilent to true (and I think this controls the dwOptions & XFA_PRINTOPT_ShowDialog, which should map on the bUI of Doc_print definition, but I am not sure).

I did not tried this myself, but that would be a route to try.