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Mouse Focus above BSpline Curve

!nvincible's picture
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Hi All,

I just started using OCC.
I am using Qt4.4 I have written a program to create BSline curve .

This is the code I used to create BSpline Curve:-

TColgp_Array1OfPnt Points1(1,4);
Points1.SetValue(1,gp_Pnt(0,0,0));
Points1.SetValue(2,gp_Pnt(2,1,0));
Points1.SetValue(3,gp_Pnt(4,0,0));
Points1.SetValue(4,gp_Pnt(6,2,0));

GeomAPI_PointsToBSpline PTBS1(Points1);

Handle(Geom_BSplineCurve) BSC1 = PTBS1.Curve();
TopoDS_Edge S = BRepBuilderAPI_MakeEdge(BSC1).Edge();

Now my requirement is if mouse focus goes above this curve some message should popup etc... or I should know that mouse focus is above the curve .How can I achieve this???

PS:- One strange thing I noticed curve gets highlighted even when mouse is far from the curve .

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