NAME

       QwtPickerDragLineMachine - A state machine for line selections.

SYNOPSIS

       #include <qwt_picker_machine.h>

       Inherits QwtPickerMachine.

   Public Member Functions
       QwtPickerDragLineMachine ()
           Constructor.
       virtual QList< Command > transition (const QwtEventPattern &, const QEvent *)
           Transition.

   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

Author

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