QwtPickerDragLineMachine (3) - Linux Manuals
NAME
QwtPickerDragLineMachine -
A state machine for line selections.
SYNOPSIS
#include <qwt_picker_machine.h>
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.