.NET应用程序能否抓住当前打开的所有窗口句柄，并移动/调整这些窗口的大小？

我很确定可以使用P / Invoke，但是我想知道是否有一些用于此功能的托管代码包装器。

解决方案

是的，可以使用Windows API。

这篇文章包含有关如何从活动进程中获取所有窗口句柄的信息：http://www.c-sharpcorner.com/Forums/ShowMessages.aspx?ThreadID=35545

using System;
using System.Diagnostics;

class Program
{
    static void Main()
    {
       Process[] procs = Process.GetProcesses();
       IntPtr hWnd;
       foreach(Process proc in procs)
       {
          if ((hWnd = proc.MainWindowHandle) != IntPtr.Zero)
          {
             Console.WriteLine("{0} : {1}", proc.ProcessName, hWnd);
          }
       }         
    }
 }

然后，我们可以使用Windows API移动窗口：http://www.devasp.net/net/articles/display/689.html

[DllImport("User32.dll", ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
        private static extern bool MoveWindow(IntPtr hWnd, int x, int y, int cx, int cy, bool repaint);

...

MoveWindow((IntPtr)handle, (trackBar1.Value*80), 20 , (trackBar1.Value*80)-800, 120, true);

这是MoveWindow函数的参数：

In order to move the window, we use
  the MoveWindow function, which takes
  the window handle, the co-ordinates
  for the top corner, as well as the
  desired width and height of the
  window, based on the screen
  co-ordinates. The MoveWindow function
  is defined as:
  
  MoveWindow(HWND hWnd, int nX, int
  nY, int nWidth, int nHeight, BOOL
  bRepaint);
  
  The bRepaint flag
  determines whether the client area
  should be invalidated, causing a
  WM_PAINT message to be sent, allowing
  the client area to be repainted. As an
  aside, the screen co-ordinates can be
  obtained using a call similar to
  GetClientRect(GetDesktopWindow(),
  &rcDesktop) with rcDesktop being a
  variable of type RECT, passed by
  reference.

(http://windows-programming.suite101.com/article.cfm/client_area_size_with_movewindow)