Parameters
- x
 - X-coordinate of the point.
 - y
 - Y-coordinate of the point.
 
Return Value
True if the point is contained within this VintasoftRectI structure; otherwise, false.
        Target Platforms: .NET 10; .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5