/// <summary>
/// Gets all windows in nested objects usefule for adding to a TreeView.
/// Includes the extended information: caption, class, handle, parent,
/// children, and siblings. The list starts with the desktop.
/// </summary>
/// <returns>Desktop WindowInformation object with nested children</returns>
public static WindowInformation GetAllWindowsTree()
{
WindowInformation desktopWindow = winInfoGet(GetDesktopWindow());
desktopWindow.ChildWindows = getChildWindowsInfo(desktopWindow);
return(desktopWindow);
}
/// <summary>
/// Called by GetAllWindowsExtededInfo. Flattens the nested WindowInformation
/// object built by GetAllWindowsTree.
/// </summary>
/// <param name="winInfo">The nested WindowInformation object created by GetAllWindowsTree.</param>
/// <returns>Flattened list of WindowInformation objects with extended information.</returns>
private static List <WindowInformation> winInfoExtendedInfoProcess(WindowInformation winInfo)
{
List <WindowInformation> winInfoList = new List <WindowInformation>();
winInfoList.Add(winInfo);
foreach (WindowInformation child in winInfo.ChildWindows)
{
winInfoList.AddRange(winInfoExtendedInfoProcess(child));
}
return(winInfoList);
}
/// <summary>
/// Called by GeAlltWindowsTree and builds the nested WindowInformation
/// object with extended window information. Recursive function.
/// </summary>
/// <param name="parent">The parent window.</param>
/// <returns>List of WindowInformation objects.</returns>
private static List <WindowInformation> getChildWindowsInfo(WindowInformation parent)
{
List <WindowInformation> result = new List <WindowInformation>();
IntPtr childHwnd = GetWindow(parent.Handle, GetWindow_Cmd.GW_CHILD);
while (childHwnd != IntPtr.Zero)
{
WindowInformation child = winInfoGet(childHwnd);
child.Parent = parent;
child.ChildWindows = getChildWindowsInfo(child);
result.Add(child);
childHwnd = FindWindowEx(parent.Handle, childHwnd, null, null);
}
foreach (WindowInformation child in result)
{
child.SiblingWindows.AddRange(result);
child.SiblingWindows.Remove(child);
}
return(result);
}
/// <summary>
/// Gets the basic window information from a handle.
/// </summary>
/// <param name="hWnd">Window handle.</param>
/// <returns>WindowInformation object with basic information.</returns>
private static WindowInformation winInfoGet(IntPtr hWnd)
{
StringBuilder caption = new StringBuilder(1024);
StringBuilder className = new StringBuilder(1024);
GetWindowText(hWnd, caption, caption.Capacity);
GetClassName(hWnd, className, className.Capacity);
WindowInformation wi = new WindowInformation();
wi.Handle = hWnd;
wi.Class = className.ToString();
if (caption.ToString() != string.Empty)
{
wi.Caption = caption.ToString();
}
else
{
caption = new StringBuilder(Convert.ToInt32(SendMessage(wi.Handle, WMConstants.WM_GETTEXTLENGTH, IntPtr.Zero, IntPtr.Zero)) + 1);
SendMessage(wi.Handle, WMConstants.WM_GETTEXT, caption.Capacity, caption);
wi.Caption = caption.ToString();
}
return(wi);
}