WPF DiagramControl - Create Custom Context Menus

This example customizes shape context menus within the DevExpress WPF Diagram Control.

The Diagram Control does not include built-in APIs to customize shape-related context menus. You can create a DiagramControl or DiagramDesignerControl class descendant and override the CreateContextMenu or CreateContextToolBar method to add custom menu items as needs dictate:

public class DiagramDesignerControlEx : DiagramDesignerControl {
    protected override IEnumerable<IBarManagerControllerAction> CreateContextToolBar() {
        if (SelectedItems != null && SelectedItems.Count > 0) {
            var item = new BarButtonItem() {
                Glyph = DXImageHelper.GetImageSource("Images/Arrows/Stop_16x16.png"),
            };
            item.ItemClick += OnContextToolBarItemClick;
            yield return item;
        }
        foreach (IBarManagerControllerAction action in base.CreateContextMenu())
            yield return action;
    }
    protected override IEnumerable<IBarManagerControllerAction> CreateContextMenu() {
        if (SelectedItems != null && SelectedItems.Count > 0) {
            var item = new BarButtonItem() {
                Glyph = DXImageHelper.GetImageSource("Images/Arrows/Record_16x16.png"),
                Content = "Custom Item"
            };
            item.ItemClick += OnContextMenuItemClick;
            yield return item;
        }
        foreach (IBarManagerControllerAction action in base.CreateContextMenu())
            yield return action;
    }
}

Files to Review

• MainWindow.xaml.cs (VB: MainWindow.xaml.vb)

Documentation

• Diagram Control
• The List of Bar Items and Links

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