QPrinter::Invalid metric command

Question

We are able to export/print preview on some machine using QPrinter command. But some we can not see the preview.

In the debug view getting below errors:

QPrinter::Invalid metric command QWidget::render: cannot render with inactive painter

printsupport dll is copied to the appropriate loacation i.e. AppPath\printsupport\windowsprintersupport.dll

someone have any idea.Thanks.

did that use to work for you before and now it stopped? please provide the code you are using — Mike

Ruan yi Ruan yi · Accepted Answer · 2016-12-07T11:27:43

Try

painter.scale(1.01, 1.01);

or

painter.scale(0.99, 0.99);

I do not know why but it works with my app.I do not really need to scale(), but without it, the same error occurs. PS: QPainter::begin: Paint device returned engine == 0, type: 2 Here is another example of this error.