[C#]
bool IsVisible(double x, double y);
bool IsVisible(double x, double y, Graphics graphics);
bool IsVisible(PointF pt);
bool IsVisible(PointF pt, Graphics graphics);
[Visual Basic]
Function IsVisible(x As Double, y As Double) As Boolean
Function IsVisible(x As Double, y As Double, graphics As Graphics) As Boolean
Function IsVisible(pt As PointF) As Boolean
Function IsVisible(pt As PointF, graphics As Graphics) As Boolean
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