Re: Decreasing the size of a selected QwtSymbol

> Is there a way to erase a single symbol from the curve and not updating
> the entire plot?

With Qt3 you can use painting in XOR mode, with Qt4 the answer is no. That's 
the price of transparent desktops.

What you could try is to render the content of the canvas without the 
selection to a QImage, that can be used as paint cache. But this only makes 
sense, when rendering your scene is a factor.

Uwe

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft 
Defy all challenges. Microsoft(R) Visual Studio 2008. 
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/