47 lines
1002 B
C++
47 lines
1002 B
C++
#include <qapplication.h>
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#include "plot.h"
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#ifndef QWT_NO_OPENGL
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#define USE_OPENGL 1
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#endif
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#if USE_OPENGL
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#include <qgl.h>
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#include <qwt_plot_glcanvas.h>
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#else
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#include <qwt_plot_canvas.h>
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#endif
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int main ( int argc, char **argv )
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{
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#if USE_OPENGL
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#if QT_VERSION >= 0x040600 && QT_VERSION < 0x050000
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// on my box QPaintEngine::OpenGL2 has serious problems, f.e:
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// the lines of a simple drawRect are wrong.
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QGL::setPreferredPaintEngine( QPaintEngine::OpenGL );
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#endif
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#endif
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QApplication a( argc, argv );
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Plot plot;
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#if USE_OPENGL
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QwtPlotGLCanvas *canvas = new QwtPlotGLCanvas();
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canvas->setFrameStyle( QwtPlotGLCanvas::NoFrame );
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#else
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QwtPlotCanvas *canvas = new QwtPlotCanvas();
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canvas->setFrameStyle( QFrame::NoFrame );
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canvas->setPaintAttribute( QwtPlotCanvas::BackingStore, false );
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#endif
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plot.setCanvas( canvas );
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plot.setCanvasBackground( QColor( 30, 30, 50 ) );
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plot.resize( 400, 400 );
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plot.show();
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return a.exec();
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}
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