QwtPickerPolygonMachine(3) Qwt User's Guide QwtPickerPolygonMachine(3)

QwtPickerPolygonMachine - A state machine for polygon selections.

#include <qwt_picker_machine.h>

Inherits QwtPickerMachine.


QwtPickerPolygonMachine ()
Constructor. virtual QList< Command > transition (const QwtEventPattern &, const QEvent *) override
Transition.

A state machine for polygon selections.

Pressing QwtEventPattern::MouseSelect1 or QwtEventPattern::KeySelect1 starts the selection and selects the first point, or appends a point. Pressing QwtEventPattern::MouseSelect2 or QwtEventPattern::KeySelect2 appends the last point and terminates the selection.

See also

QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode

Definition at line 205 of file qwt_picker_machine.h.

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Sun Jul 18 2021 Version 6.2.0