rhino-eto-ui

Eto.Forms — Rhino Cross-Platform UI

Eto.Forms renders to WPF/WinForms on Windows, Cocoa on macOS — one codebase for both.

Namespaces

using Eto.Forms;
using Eto.Drawing;
using Rhino.UI; // for UseRhinoStyle and Rhino-specific extensions

Modal Dialog (Blocking)

public class MyDialog : Dialog<DialogResult>
{
    private TextBox _nameBox;
    private NumericStepper _valueStepper;

    public string InputName => _nameBox.Text;
    public double InputValue => _valueStepper.Value;

    public MyDialog()
    {
        Title = "My Dialog";
        Padding = new Padding(10);
        Resizable = true;
        MinimumSize = new Size(300, 200);

        _nameBox = new TextBox { PlaceholderText = "Enter name..." };
        _valueStepper = new NumericStepper { Value = 1.0, MinValue = 0, MaxValue = 100, Increment = 0.5 };

        var okButton = new Button { Text = "OK" };
        okButton.Click += (s, e) => Close(DialogResult.Ok);

        var cancelButton = new Button { Text = "Cancel" };
        cancelButton.Click += (s, e) => Close(DialogResult.Cancel);

        var layout = new DynamicLayout { Padding = new Padding(5), Spacing = new Size(5, 5) };
        layout.AddRow(new Label { Text = "Name:" }, _nameBox);
        layout.AddRow(new Label { Text = "Value:" }, _valueStepper);
        layout.AddSeparateRow(null, okButton, cancelButton); // null = expander (pushes right)

        Content = layout;
        this.UseRhinoStyle();
        DefaultButton = okButton;
        AbortButton = cancelButton;
    }
}

// Usage in a Command:
var dlg = new MyDialog();
if (dlg.ShowModal(RhinoEtoApp.MainWindow) == DialogResult.Ok)
{
    string name = dlg.InputName;
    double value = dlg.InputValue;
}

Non-Modal Form (Non-Blocking)

public class MyToolWindow : Form
{
    public MyToolWindow()
    {
        Title = "My Tool";
        Size = new Size(250, 400);
        Location = new Point(100, 100);

        // ... build content ...

        this.UseRhinoStyle();
        
        // Prevent close from destroying — hide instead
        Closing += (s, e) =>
        {
            e.Cancel = true;
            Visible = false;
        };
    }
}

// Show/hide (keep alive)
private static MyToolWindow _window;
public static void ShowWindow()
{
    if (_window == null) _window = new MyToolWindow();
    _window.Show();
    _window.BringToFront();
}