QwtPlotZoomer keypatterns
Hello. I'm developing program with QwtPlot and subclass of QwtPlotZoomer. I decided to add keyboard zooming ability alongside with mouse, but it didn't work while mouse zooming worked perfectly
Code:
zoom
->setMousePattern
( QwtEventPattern::MouseSelect1, Qt
::LeftButton);
// zoom selection zoom
->setMousePattern
( QwtEventPattern::MouseSelect2, Qt
::LeftButton, Qt
::ControlModifier );
// zoom out to full size zoom
->setMousePattern
( QwtEventPattern::MouseSelect3, Qt
::LeftButton, Qt
::AltModifier );
// zoom out to previous size zoom
->setMousePattern
( QwtEventPattern::MouseSelect6, Qt
::LeftButton, Qt
::ControlModifier | Qt
::AltModifier );
// zoom in to nex size zoom
->setKeyPattern
( QwtEventPattern::KeyRedo, Qt
::Key_I, Qt
::ShiftModifier );
zoom
->setKeyPattern
( QwtEventPattern::KeyUndo, Qt
::Key_O, Qt
::ShiftModifier );
//zoom->setObjectName(QStringLiteral("%1").arg(listCurrTabGraphs.count() + 1));
zoom->setZoomBase(true);
zoom->setEnabled(false);
zoom->setEnabled(true);
zoom->canvas()->installEventFilter(this);
I installed eventFilter and saw that KeyPress events not rising
I created test application with this 2 widgets only and it worked. I have no idea how to handle this error.
Re: QwtPlotZoomer keypatterns
Maybe with overloading QApplication::notify() you can find out where your events get lost.
Uwe