Basic View system

[AndrewToaster]

So I have been playing around and figured out a bare bones implementation of a View/Window system. I also made a minimal UI application.

How does it work

The 2 main interfaces are IViewHost and IView. These are required for the windowing system to work. The IView contains methods that are called by the IViewHost which are used to manipulate Form controls. One important thing is that IView has no idea about IViewHost, the IViewHost should perform all actions that modify the UI, IView only supplies values.
IViewHost has only one method, IViewHost.SetView(IView, object?), which handles everything for changing the UI.

Current Implementation

Right now IView just supplied an array of Control which are then consumed by IViewHost which are then added to the Form.

Interface Declarations

IView.cs

public interface IView
{
	public const int MSG_SHOW = 0x0;
	public const int MSG_HIDE = 0x1;
	public const int MSG_DESTROY = 0x2;
	public const int MSG_GO_BACK = 0x3;

	public Control[] ShowView(object? data = null);
	public bool HideView(Control[] controls);
	public void DestroyView();

	public event ViewMessageCallback OnMessage;

	public delegate void ViewMessageCallback(IView view, int message);
}

IViewHost.cs

public interface IViewHost
{
	public void SetView(IView view, object? data = null);
}

Interface Implementation

HyperMcView.cs

private void Hbtn_Options_Click(object sender, EventArgs e)
{
	SetView(new SettingView());
}

private IView? _view;
private IView? _viewPrev;

public void SetView(IView view, object? data = null)
{
	if (_view is not null)
	{
		_view.HideView(Utils.PopChildControls(pnl_MainArea));
		_view.OnMessage -= View_OnMessage;
		_viewPrev = _view;
	}

	view.OnMessage += View_OnMessage;

	_view = view;
	Control[] controls = view.ShowView(data);
	pnl_MainArea.Controls.AddRange(controls);
}

private void View_OnMessage(IView view, int message)
{
	if (message == IView.MSG_GO_BACK && _viewPrev is not null)
	{
		SetView(_viewPrev, null);
	}
}

SettingView.cs

public event IView.ViewMessageCallback OnMessage;

public Control[] ShowView(object? _ = null)
{
	SendMessage(IView.MSG_SHOW);
	return Utils.PopChildControls(this);
}

public bool HideView(Control[] controls)
{
	Controls.AddRange(controls);
	SendMessage(IView.MSG_HIDE);
	return true;
}

public void DestroyView()
{
	SendMessage(IView.MSG_DESTROY);
	Close();
}

private void SendMessage(int msg)
{
	OnMessage?.Invoke(this, msg);
}

private void Hbtn_Back_Click(object sender, EventArgs e)
{
	SendMessage(IView.MSG_GO_BACK);
	Hide();
}

A Demo of it working

EZj97YKNJ7.mp4

Conclusion

I would like to get some feedback what you think about this and how can it be improved.