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

QwtPickerClickRectMachine - A state machine for rectangle selections.

#include <qwt_picker_machine.h>

Inherits QwtPickerMachine.


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

A state machine for rectangle selections.

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

See also:

QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode

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Wed Jan 2 2019 Version 6.1.4