[Qt-interest] Qt Graph (QWT) rescales in Mac OS, but not in Linux

[S. Aguinaga]

Hello Fellows,

I have a plot with controls for changing the scale (linear vs log) and for changing the min X and the max X values, then replot.
But the code only works on Mac OS, and not in Linux!

I start out with: 
calibPlot->setAxisScaleEngine(QwtPlot::xBottom, new QwtLinearScaleEngine () );
>calibPlot->replot();

>
Then I call the control buttons: using a function: setupGraphControls();
In the function I define the controls, and connect them to corresponding SLOTS:
connect( axisXScale, SIGNAL( activated( const QString &)),
this, SLOT(xAxisScaleChange( const QString &) ) );
connect( axisXStart, SIGNAL( textChanged ( const QString & )),
this, SLOT(xAxisScaleMin( const QString & ) ) );
connect( axisXEnd, SIGNAL( textChanged( const QString &)),
this, SLOT(xAxisScaleMax( const QString &) ) );

The slots are:
void CentralPage::xAxisScaleMin( const QString &xMinVal) 
{ 
  bool ok; 
  const bool doReplot = calibPlot->autoReplot(); 
  calibPlot->setAxisScale(QwtPlot::xBottom, xMinVal.toInt(&ok,10),axisXEnd->text().toInt(&ok,10) );   
  calibPlot->setAutoReplot( doReplot ); 
  calibPlot->replot();
} }

In the connection statements, should I be using something else in place of "this" ?  Has anyone else seen this issue, I use qwt-5.2.0.

// Sal Aguinaga
// Northwestern University


      
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