获取进程的所有窗口句柄

Question

使用Microsoft Spy ++,我可以看到以下属于某个进程的窗口:

处理XYZ窗口句柄,以树形式显示,就像Spy ++一样,给了我:

A
  B
  C
     D
E
F
  G
  H
  I
  J
     K

我可以得到进程,MainWindowHandle属性指向窗口F的句柄.如果我使用枚举子窗口我可以得到G到K的窗口句柄列表,但我无法弄清楚如何找到窗口A到D的句柄.如何枚举不是Process对象的MainWindowHandle指定的句柄的子窗口？

要枚举我正在使用win32调用:

[System.Runtime.InteropServices.DllImport(strUSER32DLL)]
            public static extern int EnumChildWindows(IntPtr hWnd, WindowCallBack pEnumWindowCallback, int iLParam);

Answer 1

通过IntPtr.Zero为hWnd获取系统中的每根窗口句柄.

然后,您可以通过调用来检查Windows的所有者进程GetWindowThreadProcessId.

Answer 2

对于每个仍在疑惑的人来说,这就是答案:

List<IntPtr> GetRootWindowsOfProcess(int pid)
{
    List<IntPtr> rootWindows = GetChildWindows(IntPtr.Zero);
    List<IntPtr> dsProcRootWindows = new List<IntPtr>();
    foreach (IntPtr hWnd in rootWindows)
    {
        uint lpdwProcessId;
        WindowsInterop.User32.GetWindowThreadProcessId(hWnd, out lpdwProcessId);
        if (lpdwProcessId == pid)
            dsProcRootWindows.Add(hWnd);
    }
    return dsProcRootWindows;
}

public static List<IntPtr> GetChildWindows(IntPtr parent)
{
    List<IntPtr> result = new List<IntPtr>();
    GCHandle listHandle = GCHandle.Alloc(result);
    try
    {
        WindowsInterop.Win32Callback childProc = new WindowsInterop.Win32Callback(EnumWindow);
        WindowsInterop.User32.EnumChildWindows(parent, childProc, GCHandle.ToIntPtr(listHandle));
    }
    finally
    {
        if (listHandle.IsAllocated)
            listHandle.Free();
    }
    return result;
}

private static bool EnumWindow(IntPtr handle, IntPtr pointer)
{
    GCHandle gch = GCHandle.FromIntPtr(pointer);
    List<IntPtr> list = gch.Target as List<IntPtr>;
    if (list == null)
    {
        throw new InvalidCastException("GCHandle Target could not be cast as List<IntPtr>");
    }
    list.Add(handle);
    //  You can modify this to check to see if you want to cancel the operation, then return a null here
    return true;
}

对于WindowsInterop:

public delegate bool Win32Callback(IntPtr hwnd, IntPtr lParam);

对于WindowsInterop.User32:

[DllImport("user32.dll")]
public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);

[DllImport("user32.Dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool EnumChildWindows(IntPtr parentHandle, Win32Callback callback, IntPtr lParam);

现在可以通过GetChildWindows简单地获取GetRootWindowsOfProcess的每个根窗口,以及它们的子节点.

Answer 3

您可以使用EnumWindows获取每个顶级窗口,然后根据结果筛选结果GetWindowThreadProcessId.