Qwt User's Guide
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A state machine for line selections. More...
#include <qwt_picker_machine.h>
Public Member Functions | |
QwtPickerDragLineMachine () | |
Constructor. | |
virtual QList< Command > | transition (const QwtEventPattern &, const QEvent *) |
Transition. |
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.