QwtPickerDragLineMachine man page

QwtPickerDragLineMachine —

A state machine for line selections.


#include <qwt_picker_machine.h>

Inherits QwtPickerMachine.

Public Member Functions

QwtPickerDragLineMachine ()
virtual QList< Command > transition (const QwtEventPattern &, const QEvent *)

Additional Inherited Members

Detailed Description

A state machine for line selections.

Pressing QwtEventPattern::MouseSelect1 selects the first point, releasing it the second point. Pressing QwtEventPattern::KeySelect1 also selects the first point, a second press selects the second point and terminates the selection.

A common use case of QwtPickerDragLineMachine are pickers for distance measurements.

See Also:

QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode


Generated automatically by Doxygen for Qwt User's Guide from the source code.


Qwt User's Guide Version 6.1.2 Thu Dec 11 2014