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                                Custom XtraNavBar view: XPExplorer view without expand/collapse buttons and with always expanded groups

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                                This is a sample project for article Custom XtraNavBar view: XPExplorer view without expand/collapse buttons and with always expanded groups. It demonstrates how to implement a custom NavBar view, whose groups are always expanded and cannot be collapsed. For the sake of the example, we hide the expand/collapse buttons from group headers by creating a custom NavBarView. Generally, if you need to hide these buttons in your NavBar control, you don't have to create a custom view; it's enough to set the ExplorerBarShowGroupButtons property to False.

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                                Select file
                                • CustomView.cs
                                • NavBar.cs
                                Select language
                                • C#
                                • VB.NET
                                Select version
                                • v2008 vol 2.2 - v2012 vol 2.8
                                using System;
using System.Drawing;
using DevExpress.Utils;
using DevExpress.Utils.Drawing;
using DevExpress.XtraNavBar;
using DevExpress.XtraNavBar.ViewInfo;

namespace CustomView {
    public class NoExpandButtonViewNavBarViewInfo : XPExplorerBarNavBarViewInfo {
        public NoExpandButtonViewNavBarViewInfo(NavBarControl navBar) : base(navBar) {
        }
        // prevents expanding/collapsing of a group
        protected override void DoGroupClick(NavBarHitInfo hitInfo) { }
    }

    public class NoExpandButtonViewNavBarGroupPainter : XPExplorerBarNavGroupPainter {
        public NoExpandButtonViewNavBarGroupPainter(NavBarControl navBar) : base(navBar) {}
        protected override ObjectPainter CreateOpenCloseButtonPainter() { 
            return new NoExpandButtonOpenCloseButtonObjectPainter(); 
        }
    }

    // don't draw a button
    public class NoExpandButtonOpenCloseButtonObjectPainter : ExplorerBarOpenCloseButtonObjectPainter {
        protected override void DrawNormal(ObjectInfoArgs e, AppearanceObject appearance) {}
        protected override void DrawHot(ObjectInfoArgs e, AppearanceObject appearance) {}
        public override Rectangle GetObjectClientRectangle(ObjectInfoArgs e) {
            return Rectangle.Empty;
        }
    }

    // register view
    public class NoExpandButtonViewInfoRegistrator : XPExplorerBarViewInfoRegistrator {
        internal const string CustomViewName = "NoExpandButtonView";
        public override string ViewName { get { return CustomViewName; } }
        public override BaseNavGroupPainter CreateGroupPainter(NavBarControl navBar) { 
            return new NoExpandButtonViewNavBarGroupPainter(navBar); 
        }
        public override NavBarViewInfo CreateViewInfo(NavBarControl navBar) { 
            return new NoExpandButtonViewNavBarViewInfo(navBar); 
        }
    }
}