FillRect with text

Hi,

I need to paint over an image a repeated text ( like "Demo Version" ) .
In particular, this text need to be rotated.

I think the easiest solution is to use the fillRect with a QBrush Qt::TexturePattern, but I work in a different thread ( not GUI ) and the fillRect crash cause

Code:

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QPixmap: It is not safe to use pixmaps outside the GUI thread

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Any suggestions ?

Thanks

Quote:

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Any suggestions ?

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Yes, you must do your painting actions in the painEvent().

Yes, I know this. But how ???

I want to paint a text over a qimage , with a rotation. The text is a string that need to be repeated over the full image.

For instance, the text which appeared in a print layout using a demo version of a software.

I hope you can understand my bad english !

Quote:

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But how ???

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You have to overload the paintEevent() of the widget in which you want this.
You do know what overloading is right?

You can paint of QImage (as opposed to QPixmap) in a thread. But then eventually you'll have to convert the image to a pixmap to display it and this has to be done in the main thread where you will have to follow what high_flyer described anyway.