[Qt-interest] How to save the widget as a picture?

[ri at eeda.denso.co.jp]

Hi list.
 
I have a QWidget showing some technical plot(lines, bars, etc).
 
How can I save these plots into a picture, say, a .jpg file?
 
Please give me some hint about this.  Thanks!
 
Mizuki Shiniji.
 
 
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