Hi,

Is there a way to maintain QwtPlot's physical aspect ratio in a layout? Uwe, you suggested QwtPlotRescaler before, but now I need QwtPlot to look like a square widget instead of rectangle when the window stretches. Here's what I tried to do:

Qt Code: 
  1. TargetDisplay::TargetDisplay(QWidget *parent)
  2.     : QMainWindow(parent)
  3. {
  4.   ui.setupUi(this);
  5.   d_plot = new RandomPlot(this);
  6.  
  7.   QSizePolicy policy(QSizePolicy::Preferred, QSizePolicy::Preferred);
  8.   policy.setHeightForWidth(true);
  9.   d_plot->setSizePolicy(policy);
  10.  
  11.   ui.horizontalLayout->insertWidget(0, d_plot);
  12. }
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and then in my RandomPlot widget I have:

Qt Code: 
  1. class RandomPlot: public IncrementalPlot
  2. {
  3.     Q_OBJECT
  4.  
  5. public:
  6.   RandomPlot(QWidget *parent);
  7.   ~RandomPlot();
  8.  
  9.   int heightForWidth(int w) const {
  10.     return w;
  11.   }
  12. }
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But it's not remaining a square whenever the window stretches. What else do I need to include? Thank you.

-James