python - PyQt5 with Qt 5.8: QWebEnginePage.print with QPrintPreviewDialog results in emtpy preview -


i have program used use qwebkit show , print custom generated html reports in dialog , now, want convert whole thing qwebengine. works fine far, printing doesn't!

up used qwebview.print() hand whole html data on qprintpreviewdialog wasn't problem @ all. now, understand, thought i'd have use qwebengineview.qwebenginepage.print(printer object, callback) achieve same.

sadly, tried far hasn't worked. preview pane of qprintpreviewdialog stays empty , result given callback after printing done false - although printer object still valid whole time, in callback.

i tried out different things, worked somehow , therefor think, qwebenginepage.print() function buggy somehow or there bug in pyqt, in fact, don't , perhaps me doing wrong.

successful workarounds (which don't ;-) ):

  1. don't use qprintpreviewdialog, generate output via qwebengineview.qwebenginepage.printtopdf(filename): worked!

  2. generate temporary qtextedit object , print via qprintpreviewdialog: worked, badly formatted html in case...

can tell me, if i'm assuming wrong here or if there descent example on how print html via qprintpreviewdialog using qwebengineview?

regards, holger

qtwebengine doesn't support printing print preview, see qtbug-57982. printing qprinter directly works though.


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