從活動窗口訪問數據

我正在開發一個通用應用程序c＃其中我想從任何活動窗口的文本。當用戶按熱鍵時，我的應用程序將啓動活動的Windows文本數據。從活動窗口訪問數據

這是一個拼寫檢查器應用程序。我的問題是如何從Microsoft Document訪問文本。我嘗試了所有system32.dll功能

[DllImport("user32.dll")] 
    static extern IntPtr GetActiveWindow(); 

    [DllImport("user32.dll")] 
    public static extern int SendMessage(int hWnd, IntPtr msg, 
      int wParam, int lParam); 

    [DllImport("kernel32.dll")] 
    static extern uint GetCurrentThreadId(); 

    [DllImport("user32.dll")] 
    static extern uint GetWindowThreadProcessId(int hWnd, int ProcessId); 

     System.Threading.Thread.Sleep(1000); 
     StringBuilder builder = new StringBuilder(500000); 

     int foregroundWindowHandle = GetForegroundWindow(); 
     uint remoteThreadId = GetWindowThreadProcessId(foregroundWindowHandle,0); 
     uint currentThreadId = GetCurrentThreadId(); 

     //AttachTrheadInput is needed so we can get the handle of a focused window in another app 
     AttachThreadInput(remoteThreadId, currentThreadId, true); 
     //Get the handle of a focused window 
     int focused = GetFocus(); 
     //Now detach since we got the focused handle 
     AttachThreadInput(remoteThreadId, currentThreadId, false); 

     //Get the text from the active window into the stringbuilder 
     SendMessage(focused, WM_GETTEXT, builder.Capacity, builder); 
     Console.WriteLine("Text in active window was " + builder); 
     builder.Append(" Extra text"); 

     //Change the text in the active window 
     SendMessage(focused, WM_SETTEXT, 0, builder); 
     //Console.ReadKey(); 
     Console.Read();

但是這將只從記事本，瀏覽器地址欄，寫字板等。返回文本但實際上它不是微軟的產品那樣工作的MS Office，excel..etc。

我想從任何活動窗口進行拼寫檢查的文本任何人都可以幫助我。

Thanx提前。

來源

2013-06-24 Maulik Agrawal