如何將焦點集中到IE8中的選項卡上？

我正在C＃項目中工作，我必須在IE8中啓用選項卡瀏覽。到目前爲止，我可以打開瀏覽器，打開標籤並瀏覽標籤。但是，我無法將注意力集中在我正在使用的選項卡上。任何有關如何做到這一點的想法都會受到歡迎。謝謝。如何將焦點集中到IE8中的選項卡上？

2011-03-06 user647235

你能告訴我們你正在使用自動IE什麼機制？ – 2011-03-06 19:47:28

可能重複[在IE和/或FireFox中設置特定選項卡上的焦點]（http://stackoverflow.com/questions/2753907/set-focus-on-particular-tab-in-ie-and-or-firefox） – kd7 2011-03-06 19:48:15

David，我正在使用COM對象。 – user647235 2011-03-07 14:59:25

的原貼： http://social.msdn.microsoft.com/Forums/en-US/ieextensiondevelopment/thread/03a8c835-e9e4-405b-8345-6c3d36bc8941

我的代碼：

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

namespace ADDIProtocol 
{ 
    publicclass IEAccessible 
    { 
     privateenum OBJID : uint 
     { 
      OBJID_WINDOW = 0x00000000, 
     } 

     privateconstint IE_ACTIVE_TAB = 2097154; 
     privateconstint CHILDID_SELF = 0; 
     private IAccessible accessible; 

     private IEAccessible[] Children 
     { 
      get 
      { 
       int num = 0; 
       object[] res = GetAccessibleChildren(accessible, out num); 

       if (res == null) returnnew IEAccessible[0]; 

       List<IEAccessible> list = new List<IEAccessible>(res.Length); 

       foreach (object obj in res) 
       { 
        IAccessible acc = obj as IAccessible; 

        if (acc != null) list.Add(new IEAccessible(acc)); 
       } 

       return list.ToArray(); 
      } 
     } 

     privatestring Name 
     { 
      get 
      { 
       return accessible.get_accName(CHILDID_SELF); 
      } 
     } 

     privateint ChildCount 
     { 
      get 
      { 
       return accessible.accChildCount; 
      } 
     } 

     public IEAccessible() 
     { } 

     public IEAccessible(IntPtr ieHandle, string tabCaptionToActivate) 
     { 
      int tabCount = GetTabCount(ieHandle); 

      if (tabCount > 0) 
      { 
       AccessibleObjectFromWindow(GetDirectUIHWND(ieHandle), OBJID.OBJID_WINDOW, ref accessible); 

       if (accessible == null) thrownew Exception(); 

       IEAccessible ieDirectUIHWND = new IEAccessible(ieHandle); 

       foreach (IEAccessible accessor in ieDirectUIHWND.Children) 
       { 
        foreach (IEAccessible child in accessor.Children) 
        { 
         foreach (IEAccessible tab in child.Children) 
         { 
          if (tab.Name == tabCaptionToActivate) 
          { 
           tab.Activate(); 

           return; 
          } 
         } 
        } 
       } 
      } 
     } 

     public IEAccessible(IntPtr ieHandle, int tabIndexToActivate) 
     { 
      AccessibleObjectFromWindow(GetDirectUIHWND(ieHandle), OBJID.OBJID_WINDOW, ref accessible); 

      if (accessible == null) thrownew Exception(); 

      int index = 0; 
      IEAccessible ieDirectUIHWND = new IEAccessible(ieHandle); 

      foreach (IEAccessible accessor in ieDirectUIHWND.Children) 
      { 
       foreach (IEAccessible child in accessor.Children) 
       { 
        foreach (IEAccessible tab in child.Children) 
        { 
         if (tabIndexToActivate >= child.ChildCount - 1) return; 

         if (index == tabIndexToActivate) 
         { 
          tab.Activate(); 

          return; 
         } 

         index++; 
        } 
       } 
      } 
     } 

     private IEAccessible(IntPtr ieHandle) 
     { 
      AccessibleObjectFromWindow(GetDirectUIHWND(ieHandle), OBJID.OBJID_WINDOW, ref accessible); 

      if (accessible == null) thrownew Exception(); 
     } 

     publicstring GetActiveTabUrl(IntPtr ieHandle) 
     { 
      AccessibleObjectFromWindow(GetDirectUIHWND(ieHandle), OBJID.OBJID_WINDOW, ref accessible); 

      if (accessible == null) thrownew Exception(); 

      IEAccessible ieDirectUIHWND = new IEAccessible(ieHandle); 

      foreach (IEAccessible accessor in ieDirectUIHWND.Children) 
      { 
       foreach (IEAccessible child in accessor.Children) 
       { 
        foreach (IEAccessible tab in child.Children) 
        { 
         object tabIndex = tab.accessible.get_accState(CHILDID_SELF); 

         if ((int)tabIndex == IE_ACTIVE_TAB) 
         { 
          string description = tab.accessible.get_accDescription(CHILDID_SELF); 

          if (!string.IsNullOrEmpty(description)) 
          { 
           if (description.Contains(Environment.NewLine)) 
           { 
            string url = description.Substring(description.IndexOf(Environment.NewLine)).Trim(); 

            return url; 
           } 
          } 
         } 
        } 
       } 
      } 

      return String.Empty; 
     } 

     publicint GetActiveTabIndex(IntPtr ieHandle) 
     { 
      AccessibleObjectFromWindow(GetDirectUIHWND(ieHandle), OBJID.OBJID_WINDOW, ref accessible); 

      if (accessible == null) thrownew Exception(); 

      int index = 0; 
      IEAccessible ieDirectUIHWND = new IEAccessible(ieHandle); 

      foreach (IEAccessible accessor in ieDirectUIHWND.Children) 
      { 
       foreach (IEAccessible child in accessor.Children) 
       { 
        foreach (IEAccessible tab in child.Children) 
        { 
         object tabIndex = tab.accessible.get_accState(0); 

         if ((int)tabIndex == IE_ACTIVE_TAB) return index; 

         index++; 
        } 
       } 
      } 

      return -1; 
     } 

     publicstring GetActiveTabCaption(IntPtr ieHandle) 
     { 
      AccessibleObjectFromWindow(GetDirectUIHWND(ieHandle), OBJID.OBJID_WINDOW, ref accessible); 

      if (accessible == null) thrownew Exception(); 

      IEAccessible ieDirectUIHWND = new IEAccessible(ieHandle); 

      foreach (IEAccessible accessor in ieDirectUIHWND.Children) 
      { 
       foreach (IEAccessible child in accessor.Children) 
       { 
        foreach (IEAccessible tab in child.Children) 
        { 
         object tabIndex = tab.accessible.get_accState(0); 


         if ((int)tabIndex == IE_ACTIVE_TAB) return tab.Name; 
        } 
       } 
      } 

      return String.Empty; 
     } 

     public List<string> GetTabCaptions(IntPtr ieHandle) 
     { 
      AccessibleObjectFromWindow(GetDirectUIHWND(ieHandle), OBJID.OBJID_WINDOW, ref accessible); 

      if (accessible == null) thrownew Exception(); 

      IEAccessible ieDirectUIHWND = new IEAccessible(ieHandle); 
      List<string> captionList = new List<string>(); 

      foreach (IEAccessible accessor in ieDirectUIHWND.Children) 
      { 
       foreach (IEAccessible child in accessor.Children) 
        foreach (IEAccessible tab in child.Children) captionList.Add(tab.Name); 
      } 

      if (captionList.Count > 0) captionList.RemoveAt(captionList.Count - 1); 

      return captionList; 
     } 

     publicint GetTabCount(IntPtr ieHandle) 
     { 
      AccessibleObjectFromWindow(GetDirectUIHWND(ieHandle), OBJID.OBJID_WINDOW, ref accessible); 

      if (accessible == null) return 0; // throw new Exception(); 

      IEAccessible ieDirectUIHWND = new IEAccessible(ieHandle); 

      foreach (IEAccessible accessor in ieDirectUIHWND.Children) 
      { 
       foreach (IEAccessible child in accessor.Children) 
       { 
        foreach (IEAccessible tab in child.Children) return child.ChildCount - 1; 
       } 
      } 

      return 0; 
     } 

     private IntPtr GetDirectUIHWND(IntPtr ieFrame) 
     { 
      IntPtr directUI = FindWindowEx(ieFrame, IntPtr.Zero, "CommandBarClass", null); 
      directUI = FindWindowEx(directUI, IntPtr.Zero, "ReBarWindow32", null); 
      directUI = FindWindowEx(directUI, IntPtr.Zero, "TabBandClass", null); 
      directUI = FindWindowEx(directUI, IntPtr.Zero, "DirectUIHWND", null); 

      return directUI; 
     } 

     private IEAccessible(IAccessible acc) 
     { 
      if (acc == null) thrownew Exception(); 

      accessible = acc; 
     } 

     privatevoid Activate() 
     { 
      accessible.accDoDefaultAction(CHILDID_SELF); 
     } 

     privatestaticobject[] GetAccessibleChildren(IAccessible ao, outint childs) 
     { 
      childs = 0; 
      object[] ret = null; 
      int count = ao.accChildCount; 

      if (count > 0) 
      { 
       ret = newobject[count]; 
       AccessibleChildren(ao, 0, count, ret, out childs); 
      } 

      return ret; 
     } 

     #region Interop 
     [DllImport("user32.dll", SetLastError = true)] 
     privatestaticextern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow); 

     privatestaticint AccessibleObjectFromWindow(IntPtr hwnd, OBJID idObject, ref IAccessible acc) 
     { 
      Guid guid = new Guid("{618736e0-3c3d-11cf-810c-00aa00389b71}"); // IAccessibleobject obj = null; 
      int num = AccessibleObjectFromWindow(hwnd, (uint)idObject, ref guid, ref obj); 

      acc = (IAccessible)obj; 

      return num; 
     } 

     [DllImport("oleacc.dll")] 
     private static extern int AccessibleObjectFromWindow(IntPtr hwnd, uint id, ref Guid iid, [In, Out, MarshalAs(UnmanagedType.IUnknown)] refobject ppvObject); 

     [DllImport("oleacc.dll")] 
     private static extern int AccessibleChildren(IAccessible paccContainer, int iChildStart, int cChildren, [In, Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)] object[] rgvarChildren, outint pcObtained); 
     #endregion 
    } 
}

來源

2012-06-13 11:28:37 Faraday

如何將焦點集中到IE8中的選項卡上？

回答

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