ListViewDesigner.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / ListViewDesigner.cs / 1 / ListViewDesigner.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 */ 
namespace System.Windows.Forms.Design {
 
    using System.ComponentModel;
    using System.ComponentModel.Design;

    using System.Diagnostics; 
    using System.Collections;
 
    using System.Runtime.InteropServices; 

    using System; 
    using System.Design;
    using System.Windows.Forms;
    using System.Drawing;
    using System.Drawing.Design; 
    using Microsoft.Win32;
 
    ///  
    /// 
    ///      This is the designer for the list view control.  It implements hit testing for 
    ///      the items in the list view.
    /// 
    internal class ListViewDesigner : ControlDesigner {
        private DesignerActionListCollection _actionLists; 
        private NativeMethods.HDHITTESTINFO hdrhit = new NativeMethods.HDHITTESTINFO();
        private bool inShowErrorDialog; 
 

        ///  
        /// 
        ///    
        ///       Retrieves a list of associated components.  These are components that should be incluced in a cut or copy operation on this component.
        ///     
        /// 
        public override ICollection AssociatedComponents { 
            get { 
                ListView lv = Control as ListView;
                if (lv != null) { 
                    return lv.Columns;
                }
                return base.AssociatedComponents;
            } 
        }
 
        private bool OwnerDraw { 
            get {
                return (bool)ShadowProperties["OwnerDraw"]; 
            }
            set {
                ShadowProperties["OwnerDraw"] = value;
            } 
        }
 
        private View View { 
            get {
                return ((ListView)Component).View; 
            }
            set {
                ((ListView)Component).View = value;
                if (value == View.Details) { 
                    HookChildHandles(Control.Handle);
                } 
            } 

        } 


        /// 
        ///  
        ///      We override GetHitTest to make the header in report view UI-active.
        ///  
        protected override bool GetHitTest(Point point) { 
            ListView lv = (ListView)Component;
            if (lv.View == View.Details) { 
                Point lvPoint = Control.PointToClient(point);
                IntPtr hwndList = lv.Handle;
                IntPtr hwndHit = NativeMethods.ChildWindowFromPointEx(hwndList, lvPoint.X, lvPoint.Y, NativeMethods.CWP_SKIPINVISIBLE);
 
                if (hwndHit != IntPtr.Zero && hwndHit != hwndList) {
                    IntPtr hwndHdr = NativeMethods.SendMessage(hwndList, NativeMethods.LVM_GETHEADER, IntPtr.Zero, IntPtr.Zero); 
                    if (hwndHit == hwndHdr) { 
                        NativeMethods.POINT ptHdr = new NativeMethods.POINT();
                        ptHdr.x = point.X; 
                        ptHdr.y = point.Y;
                        NativeMethods.MapWindowPoints(IntPtr.Zero, hwndHdr, ptHdr, 1);
                        hdrhit.pt_x = ptHdr.x;
                        hdrhit.pt_y = ptHdr.y; 
                        NativeMethods.SendMessage(hwndHdr, NativeMethods.HDM_HITTEST, IntPtr.Zero, hdrhit);
                        if (hdrhit.flags == NativeMethods.HHT_ONDIVIDER) 
                            return true; 
                    }
                } 
            }
            return false;
        }
 
        public override void Initialize(IComponent component) {
 
            ListView lv = (ListView)component; 
            this.OwnerDraw = lv.OwnerDraw;
            lv.OwnerDraw = false; 
            lv.UseCompatibleStateImageBehavior = false;

            AutoResizeHandles = true;
 
            base.Initialize(component);
            if (lv.View == View.Details) { 
                HookChildHandles(Control.Handle); 
            }
        } 

        protected override void PreFilterProperties(IDictionary properties) {
            PropertyDescriptor ownerDrawProp = (PropertyDescriptor) properties["OwnerDraw"];
 
            if (ownerDrawProp != null) {
                properties["OwnerDraw"] = TypeDescriptor.CreateProperty(typeof(ListViewDesigner), ownerDrawProp, new Attribute[0]); 
            } 

            PropertyDescriptor viewProp = (PropertyDescriptor) properties["View"]; 

            if (viewProp != null) {
                properties["View"] = TypeDescriptor.CreateProperty(typeof(ListViewDesigner), viewProp, new Attribute[0]);
            } 

            base.PreFilterProperties(properties); 
        } 

        protected override void WndProc(ref Message m) { 

            switch (m.Msg) {

                case NativeMethods.WM_NOTIFY: 
                case NativeMethods.WM_REFLECT + NativeMethods.WM_NOTIFY:
                    NativeMethods.NMHDR nmhdr = (NativeMethods.NMHDR) Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NMHDR)); 
                    if (nmhdr.code == NativeMethods.HDN_ENDTRACK) { 

                        // Re-codegen if the columns have been resized 
                        //
                        try {
                            IComponentChangeService componentChangeService = (IComponentChangeService)GetService(typeof(IComponentChangeService));
                            componentChangeService.OnComponentChanged(Component, null, null, null); 
                        } catch (System.InvalidOperationException ex) {
                            if (this.inShowErrorDialog) { 
                                return; 
                            }
 
                            IUIService uiService = (IUIService) this.Component.Site.GetService(typeof(IUIService));
                            this.inShowErrorDialog = true;
                            try {
                                DataGridViewDesigner.ShowErrorDialog(uiService, ex, (ListView) this.Component); 
                            } finally {
                                this.inShowErrorDialog = false; 
                            } 
                            return;
                        } 
                    }
            break;
            }
 
            base.WndProc(ref m);
        } 
 

        public override DesignerActionListCollection ActionLists { 
            get {
                if (_actionLists == null) {
                    _actionLists = new DesignerActionListCollection();
                    _actionLists.Add(new ListViewActionList(this)); 
                }
                return _actionLists; 
            } 
        }
    } 

    internal class ListViewActionList : DesignerActionList {
        private ComponentDesigner _designer;
        public ListViewActionList(ComponentDesigner designer) : base (designer.Component) { 
            _designer = designer;
        } 
 
        public void InvokeItemsDialog() {
            EditorServiceContext.EditValue(_designer, Component, "Items"); 
        }

        public void InvokeColumnsDialog() {
            EditorServiceContext.EditValue(_designer, Component, "Columns"); 
        }
 
        public void InvokeGroupsDialog() { 
            EditorServiceContext.EditValue(_designer, Component, "Groups");
        } 

        public View View {
            get {
                return ((ListView)Component).View; 
            }
            set { 
                TypeDescriptor.GetProperties(Component)["View"].SetValue(Component, value); 
            }
        } 

        public ImageList LargeImageList {
            get {
                return ((ListView)Component).LargeImageList; 
            }
            set { 
                TypeDescriptor.GetProperties(Component)["LargeImageList"].SetValue(Component, value); 
            }
        } 

        public ImageList SmallImageList {
            get {
                return ((ListView)Component).SmallImageList; 
            }
            set { 
                TypeDescriptor.GetProperties(Component)["SmallImageList"].SetValue(Component, value); 
            }
        } 

        public override DesignerActionItemCollection GetSortedActionItems() {
            DesignerActionItemCollection items = new DesignerActionItemCollection();
            items.Add(new DesignerActionMethodItem(this, "InvokeItemsDialog", 
                SR.GetString(SR.ListViewActionListEditItemsDisplayName),
                SR.GetString(SR.PropertiesCategoryName), 
                SR.GetString(SR.ListViewActionListEditItemsDescription), true)); 
            items.Add(new DesignerActionMethodItem(this, "InvokeColumnsDialog",
                SR.GetString(SR.ListViewActionListEditColumnsDisplayName), 
                SR.GetString(SR.PropertiesCategoryName),
                SR.GetString(SR.ListViewActionListEditColumnsDescription), true));
            items.Add(new DesignerActionMethodItem(this, "InvokeGroupsDialog",
                SR.GetString(SR.ListViewActionListEditGroupsDisplayName), 
                SR.GetString(SR.PropertiesCategoryName),
                SR.GetString(SR.ListViewActionListEditGroupsDescription), true)); 
            items.Add(new DesignerActionPropertyItem("View", 
                SR.GetString(SR.ListViewActionListViewDisplayName),
                SR.GetString(SR.PropertiesCategoryName), 
                SR.GetString(SR.ListViewActionListViewDescription)));
            items.Add(new DesignerActionPropertyItem("SmallImageList",
                SR.GetString(SR.ListViewActionListSmallImagesDisplayName),
                SR.GetString(SR.PropertiesCategoryName), 
                SR.GetString(SR.ListViewActionListSmallImagesDescription)));
            items.Add(new DesignerActionPropertyItem("LargeImageList", 
                SR.GetString(SR.ListViewActionListLargeImagesDisplayName), 
                SR.GetString(SR.PropertiesCategoryName),
                SR.GetString(SR.ListViewActionListLargeImagesDescription))); 
            return items;
        }
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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ListViewDesigner.cs source code in C# .NET

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