COM2ICategorizePropertiesHandler.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / ComponentModel / COM2Interop / COM2ICategorizePropertiesHandler.cs / 1305376 / COM2ICategorizePropertiesHandler.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Windows.Forms.ComponentModel.Com2Interop { 
    using System; 
    using System.Collections;
    using System.ComponentModel; 
    using System.Diagnostics;
    using System.Globalization;
    using Microsoft.Win32;
 
    [System.Security.SuppressUnmanagedCodeSecurityAttribute()]
    internal class Com2ICategorizePropertiesHandler : Com2ExtendedBrowsingHandler { 
 
        public override Type Interface {
            get { 
                return typeof(NativeMethods.ICategorizeProperties);
            }
        }
 
        private string GetCategoryFromObject(object obj, int dispid) {
            if (obj == null) { 
                return null; 
            }
 
            if (obj is NativeMethods.ICategorizeProperties) {
                NativeMethods.ICategorizeProperties catObj = (NativeMethods.ICategorizeProperties)obj;

                try { 
                    int categoryID = 0;
 
                    if (NativeMethods.S_OK == catObj.MapPropertyToCategory(dispid, ref categoryID)) { 
                        string categoryName = null;
 
                        switch (categoryID) {
                            case NativeMethods.ActiveX.PROPCAT_Nil:
                                return "";
                            case NativeMethods.ActiveX.PROPCAT_Misc: 
                                return SR.GetString(SR.PropertyCategoryMisc);
                            case NativeMethods.ActiveX.PROPCAT_Font: 
                                return SR.GetString(SR.PropertyCategoryFont); 
                            case NativeMethods.ActiveX.PROPCAT_Position:
                                return SR.GetString(SR.PropertyCategoryPosition); 
                            case NativeMethods.ActiveX.PROPCAT_Appearance:
                                return SR.GetString(SR.PropertyCategoryAppearance);
                            case NativeMethods.ActiveX.PROPCAT_Behavior:
                                return SR.GetString(SR.PropertyCategoryBehavior); 
                            case NativeMethods.ActiveX.PROPCAT_Data:
                                return SR.GetString(SR.PropertyCategoryData); 
                            case NativeMethods.ActiveX.PROPCAT_List: 
                                return SR.GetString(SR.PropertyCategoryList);
                            case NativeMethods.ActiveX.PROPCAT_Text: 
                                return SR.GetString(SR.PropertyCategoryText);
                            case NativeMethods.ActiveX.PROPCAT_Scale:
                                return SR.GetString(SR.PropertyCategoryScale);
                            case NativeMethods.ActiveX.PROPCAT_DDE: 
                                return SR.GetString(SR.PropertyCategoryDDE);
                        } 
 
                        if (NativeMethods.S_OK == catObj.GetCategoryName(categoryID, CultureInfo.CurrentCulture.LCID, out categoryName)) {
                            return categoryName; 
                        }
                    }
                }
                catch { 
                }
            } 
            return null; 
        }
 
        public override void SetupPropertyHandlers(Com2PropertyDescriptor[] propDesc) {
            if (propDesc == null) {
                return;
            } 
            for (int i = 0; i < propDesc.Length; i++) {
                propDesc[i].QueryGetBaseAttributes += new GetAttributesEventHandler(this.OnGetAttributes); 
            } 
        }
 
        private void OnGetAttributes(Com2PropertyDescriptor sender, GetAttributesEvent attrEvent) {

            string cat = GetCategoryFromObject(sender.TargetObject, sender.DISPID);
 
            if (cat != null && cat.Length > 0) {
                attrEvent.Add(new CategoryAttribute(cat)); 
            } 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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