# QwtPickerDragRectMachine Class Reference

A state machine for rectangle selections. More...

`#include <qwt_picker_machine.h>`

Inheritance diagram for QwtPickerDragRectMachine:
[legend]

List of all members.

## Public Member Functions

virtual CommandList | transition (const QwtEventPattern &, const QEvent *)

## Detailed Description

A state machine for rectangle 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.

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

## Member Function Documentation

QwtPickerMachine::CommandList QwtPickerDragRectMachine::transition | ( | const QwtEventPattern & | eventPattern,
|  | const QEvent * | e |
| ) |  |  | `[virtual]`

Transition.

Implements QwtPickerMachine.