Ok.
But it works in QTextEdit.
Look:
void QTextEdit::paintEvent(QPaintEvent *e)
{
Q_D(QTextEdit);
QPainter p(d->viewport);
d->paint(&p, e);
}
-----Original Message-----
From: Konstantin Tokarev
Sent: Thursday, March 27, 2014 10:32 AM
To: igor.mironc...@gmail.com ; interest@qt-project.org
Subject: Re: [Interest] Drawing on viewport
27.03.2014, 12:28, "igor.mironc...@gmail.com" <igor.mironc...@gmail.com>:
> Hi.
>
> I’m working on TextEdit widget for QtMWidgets library.
>
> TextEdit is a subclass of ScrollArea that derived from AbstractScrollArea.
> AbstractScrollArea is implemented like QAbstractScrollArea and has
> viewport as child widget.
>
> In TextEdit’s paintEvent I want to draw directly on viewport. And I
> initialize QPainter with:
>
> QPainter p( viewport() );
>
> But I receive folowing warning:
>
> QWidget::paintEngine: Should no longer be called
>
> QPainter::begin: Paint device returned engine == 0, type: 1
>
> QPainter::setPen: Painter not active
>
> and nothing draws.
>
> What am I doing wrong?
One does not simply paint on the other widget.
--
Regards,
Konstantin
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