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Specify the style of the outline.
The outline style determines which kind of shape is drawn in the plotting region when the user presses a mouse button or drags the mouse. Valid Styles are: -
Parameters:
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Outline Style. Valid values are: Qwt::HLine , Qwt::VLine , Qwt::Cross , Qwt::Rect , Qwt::Ellipse
- Qwt::Cros
- Cross hairs are drawn across the plotting area when the user presses a mouse button. The lines intersect at the point where the mouse was pressed and move with the mouse pointer.
- Qwt::HLine, Qwt::VLine
- A horizontal or vertical line appears when the user presses a mouse button. This is useful for moving line markers.
- Qwt::Rect
- A rectangle is displayed when the user drags the mouse. One corner is fixed at the point where the mouse was pressed, and the opposite corner moves with the mouse pointer. This can be used for selecting regions.
- Qwt::Ellipse
- Similar to Qwt::Rect, but with an ellipse inside a bounding rectangle.
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See also:
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QwtPlotCanvas::enableOutline(), QwtPlotCanvas::outlineStyle()
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