Chaining painting to images [SOLVED]

minimoog77

Maybe this post is another forum, but anyway it's related to QML.

I have this type of problem:

@void MyDeclarativeItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
painter->drawImage(m_myImage);
}

void MyDeclarativeItem::somethingHappened()
{
QPainter painterToImage(&m_myImage);
//draw something to image
}
@

Which of course fails, with error when construncting painterToImage 'QPainter::begin: A paint device can only be painted by one painter at a time.'.

Someone knows how to paint to image, and then that painted image to be used in painter of the QDeclarativeItem? Or am I missing something?

andre

The code you show looks alright to me.

minimoog77

Then why I am getting the error?

andre

Based on the tiny sample of code you posted, that is impossible to tell. Perhaps there is another painter still open on the image somehow?

minimoog77

Well, it doesn't depend if I paint or not in paint() method. Which is more strange.

All I have done is this

@m_myImage = QImage(w, h, QImage::Format_ARGB32_Premutliplied);
QPainter myImagePainter(&m_myImage);
@

Nothing more. And I am still getting the same error.