The problem shows up in your VB example.
C:\\Program Files\\9Rays.Net\\FlyGrid.Net\\Demo\\VB\\XTras\\hexEditor.vb(250): 'NineRays.Windows.Forms.Grids.CellDrawInfo.G' is not accessible in this context because it is 'Private'.
C:\\Program Files\\9Rays.Net\\FlyGrid.Net\\Demo\\VB\\XTras\\hexEditor.vb(255): 'NineRays.Windows.Forms.Grids.CellDrawInfo.G' is not accessible in this context because it is 'Private'.
C:\\Program Files\\9Rays.Net\\FlyGrid.Net\\Demo\\VB\\XTras\\hexEditor.vb(314): 'NineRays.Windows.Forms.Grids.CellDrawInfo.G' is not accessible in this context because it is 'Private'.