Activating the cursor when the user clicks into the plot area Problem Cursor mode shall be switched on and the cursor shall be placed at the mouse position when the user clicks into the plot area. A click into the chart area shall be ignored. Solution Because the MouseDown events gives us the screen coordinates of the mouse in pixels but the cursor coordinates must be in scale units we need transformation functions to obtain the physical coordinates. Each axis provides a method PhysicalCoordinate() which yields a coordinate in scale units for a given screen coordinate.   Regard the following code: Private Sub DynaPlot1_MouseDown(Button As Integer, Shift As Integer, X As Long, Y As Long)   If DynaPlot1.Cursors.Enable.State = False Then     Dim newX As Double, newY As Double     ' compute physical coordinates of the mouse position     newX = DynaPlot1.Axes.XAxis.PhysicalCoordinate(X)     newY = DynaPlot1.Axes.YAxis.PhysicalCoordinate(Y)     If newX >= DynaPlot1.Axes.XAxis.From And _        newX <= DynaPlot1.Axes.XAxis.To And _        newY >= DynaPlot1.Axes.YAxis.From And _        newY <= DynaPlot1.Axes.YAxis.To Then       ' switch the cursor on       DynaPlot1.Cursors.Enable.State = True       ' move the cursor to where the mouse is       DynaPlot1.Cursors.Move newX, newY     End If   End If End Sub

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