I encountered a user interface "problem" today. At work I have multiple monitors, and at home I only have the one on my machine (I own Dell 9300, and so it's my desktop at both places). As a result, sometimes when going back and forth between the multiple monitors and my single, I sometimes wind up with an app that'll draw itself OFF the desktop window when I suddenly fire it up on my single monitor (if I open the app, it'll show up, but like on some wacky negative x/y coordinate way off in la la land).

There's a way, apparently, to bring the window BACK onto my visible desktop through Alt-SPACE-M or something like that, but I couldn't get it to work for some odd reason. So I wrote an app that'll simply re-align all my desktop windows to the 0/0 x/y position. It's a rough hack because all I wanted was to get my app to draw its window in a sane position again - so, I wouldn't take the code as-is and use it wherever. It worked for me, and it was an interesting way to step back and realize "Man, I'm a geek".

using System;
using System.Collections.Generic;
using System.Text;

namespace StraightenWindows
{
    class Interop
    {
        public delegate System.Boolean EnumWindowsProc(
            System.IntPtr hWnd,
            System.Int32 lParam);
        [System.Runtime.InteropServices.DllImport("user32")]
        public static extern System.Boolean EnumDesktopWindows(
            System.IntPtr hDesktop,
            Interop.EnumWindowsProc lpfn,
            System.Int32 lParam);
        [System.Runtime.InteropServices.DllImport("user32")]
        public static extern System.Boolean IsWindow(System.IntPtr hWnd);
        [System.Runtime.InteropServices.DllImport("user32")]
        public static extern System.Boolean IsWindowVisible(System.IntPtr hWnd);
        [System.Runtime.InteropServices.DllImport("user32")]
        public static extern System.IntPtr GetParent(System.IntPtr hWnd);
        [System.Runtime.InteropServices.DllImport("user32")]
        public static extern System.Int32 GetWindowText(
            System.IntPtr hWnd,
            [System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPStr, SizeConst = 255)]
            System.Text.StringBuilder lpString,
            System.Int32 nMaxCount);
        [System.Runtime.InteropServices.DllImport("user32")]
        public static extern System.Boolean MoveWindow(
            System.IntPtr hWnd,
            System.Int32 x, System.Int32 y,
            System.Int32 nWidth, System.Int32 nHeight, System.Boolean bRepaint);
    }
    class Program
    {
        static System.Boolean EnumWindowsCallback(System.IntPtr hWnd, System.Int32 lParam)
        {
            // verify it's a window and it's visible
            if (Interop.IsWindow(hWnd) && Interop.IsWindowVisible(hWnd))
            {
                // verify it's a parent window
                if (Interop.GetParent(hWnd) == System.IntPtr.Zero)
                {
                    // the get parent can also return zero on error, so check for that condition.
                    if (System.Runtime.InteropServices.Marshal.GetLastWin32Error() == 0)
                    {
                        System.Text.StringBuilder sb = new StringBuilder(255);
                        if (Interop.GetWindowText(hWnd, sb, 255) > 0)
                        {
                            Console.WriteLine("Window " + hWnd.ToString() + " has text '" + sb.ToString() + "'");
                            Console.WriteLine();
                            Console.WriteLine();
                            // fix
                            Interop.MoveWindow(
                                hWnd,
                                0, 0, 500, 500, true);
                        }
                    }
                }
            }

           
            return true;
        }
        static void Main(string[] args)
        {
            Interop.EnumWindowsProc p = new Interop.EnumWindowsProc(EnumWindowsCallback);
            Interop.EnumDesktopWindows(System.IntPtr.Zero, // use current desktop
                p, 0);
            Console.Write("Press any key to continue...");
            Console.ReadKey();
            return;
        }
    }
}