Qwt User's Guide 6.0.2

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Public Types | Public Member Functions
QwtPickerMachine Class Reference

`#include <qwt_picker_machine.h>`

Inheritance diagram for QwtPickerMachine:
[legend]

List of all members.

## Public Types
enum | Command { Begin, Append, Move, Remove, End }
enum | SelectionType { NoSelection = -1, PointSelection, RectSelection, PolygonSelection }

## Public Member Functions
| QwtPickerMachine (SelectionType)
virtual | ~QwtPickerMachine ()
void | reset ()
SelectionType | selectionType () const
void | setState (int)
int | state () const
virtual QList< Command > | transition (const QwtEventPattern &, const QEvent *)=0

## Detailed Description

A state machine for QwtPicker selections.

QwtPickerMachine accepts key and mouse events and translates them into selection commands.

See also:
  QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode

## Member Enumeration Documentation

enum QwtPickerMachine::SelectionType

Type of a selection.

See also:
  selectionType()

Enumerator:

  NoSelection | The state machine not usable for any type of selection.
  PointSelection | The state machine is for selecting a single point.
  RectSelection | The state machine is for selecting a rectangle (2 points).
  PolygonSelection | The state machine is for selecting a polygon (many points).