Hi friends/experts,

im using Qt.5.7 and qwt version 6.1.2

i tired to initialize qwt plot by following

Qt Code: 
  1. QwtPlotLayout *pLayout = plotLayout();
  2.     pLayout->setCanvasMargin(0);
  3.     pLayout->setAlignCanvasToScales (true);
  4.  
  5.  
  6.     //Canvas setup
  7.     m_pCanvas = new QwtPlotCanvas();
  8.     m_pCanvas->setFrameStyle( QFrame::Box | QFrame::Plain );
  9.     m_pCanvas->setLineWidth( 1);
  10.  
  11.     m_pCanvas->setContentsMargins(0,0,0,0);
  12.     m_pCanvas->setPaintAttribute(QwtPlotCanvas::BackingStore, false);
  13.     m_pCanvas->setPaintAttribute(QwtPlotCanvas::Opaque, false);
  14.     m_pCanvas->setAttribute( Qt::WA_OpaquePaintEvent, false );
  15.  
  16.  
  17.     m_pCanvas->setAutoFillBackground( false);
  18.  
  19.     QColor background = QColor(QColor(255,255,255));
  20.     background.setAlpha(255);
  21.  
  22.     QPalette palette;
  23.     palette.setColor(QPalette::Window, background);
  24.     setPalette(palette);
  25.  
  26.     setCanvasBackground (background);
  27.     setAttribute(Qt::WA_TranslucentBackground);
  28.  
  29.  
  30.     setCanvas( m_pCanvas );
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but line width or border of canvas is not visible at all.

i tired setting canvas color

as
QPalette p = palette();
p.setColor(QPalette::Window, color);

canvas()->setPalette(p);
canvas()->setAutoFillBackground(true);

but canvas color is not reflecting in the plot.

please help me and suggest me some solution. same was working in qt.4.7