public static unsafe void AddLineAtX(IntPtr pointer, double x, double thick, byte r, byte g, byte b)
{
GCHandle handle = GCHandle.FromIntPtr(pointer);
if (handle.IsAllocated)
{
PlotModel model = handle.Target as PlotModel;
if (model != null)
{
model.AddLineAtX(x, OxyColor.FromRgb(r, g, b), thick);
}
}
}