Diagram Command Bars Overview

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NOV Diagram provides a lot of commands and settings most of which can be shown to the end user in a command bars interface (menu and toolbars). There are two ways to create command bars associated with a drawing view:

Drawing View with Command Bars Control

If you are not creating a cross-platform application, the easiest way to create a drawing view with command bars is to use the Visual Studio designer and drop an NDrawingViewWithCommandBarsControl from the Visiual Studio toolbox to your form/window. Check out the Diagram Command Bars Designer topic for more information on how to use the Visual Studio designer to customize the diagram command bars.

Alternatively, you can use the NDrawingViewWithCommandBars class to add a drawing view with command bars to your form/window programatically. The example below demonstrates how to create a drawing view with command bars hosted in a NOV widget host. You can then add this host to a form's Controls collection if you are creating a WinForms application, set it as the Content of a WPF window in a WPF application project or to the ContentView of a Xamarin.Mac window.

Create a drawing view with command bars	Copy Code
NDrawingViewWithCommandBars drawingViewWithCommandBars = new NDrawingViewWithCommandBars(); // Create a drawing view with command bars NDrawingView drawingView = drawingViewWithCommandBars.View; // Get the drawing view // Create a NOV widget host that hosts the drawing view with command bars NNovWidgetHost<NWidget> novHost = new NNovWidgetHost<NWidget>(drawingViewWithCommandBars);

Create a drawing view with command bars

Copy Code

NDrawingViewWithCommandBars drawingViewWithCommandBars = new NDrawingViewWithCommandBars(); // Create a drawing view with command bars
NDrawingView drawingView = drawingViewWithCommandBars.View; // Get the drawing view

// Create a NOV widget host that hosts the drawing view with command bars
NNovWidgetHost<NWidget> novHost = new NNovWidgetHost<NWidget>(drawingViewWithCommandBars);

Diagram Command Bar Builder

NOV Diagram provides a command bar builder that can be used to create some menus and toolbars to control and edit the drawing view and its shapes. This builder is represented by the class NDiagramCommandBarBuilder.

The following code fragment demonstrates how to create a ribbon-based commanding UI using a diagram command bar builder and associate it with a drawing view:

Create Command Bars UI	Copy Code
NDiagramCommandBarBuilder commandBarBuilder = new NDiagramCommandBarBuilder(); NWidget uiWidget = commandBarBuilder.CreateUI(drawingView);

Commanding

Commanding Overview

UI

Command Builders