C#

private void WndProc(ref System.Windows.Forms.Message msg) {
int local0;

local0 = msg.Msg;
if (local0 == 273)
	goto i3;
if (local0 != 2048)
	goto i4;
local0 = msg.LParam;
switch (local0 - 512) {
	case 3:
		this.WmMouseDown(msg, 1048576, 2);
		return;
	break;
	case 1:
		this.WmMouseDown(msg, 1048576, 1);
		return;
	break;
	case 2:
		this.WmMouseUp(msg, 1048576);
		return;
	break;
	case 9:
		this.WmMouseDown(msg, 4194304, 2);
		return;
	break;
	case 7:
		this.WmMouseDown(msg, 4194304, 1);
		return;
	break;
	case 8:
		this.WmMouseUp(msg, 4194304);
		return;
	break;
	case 0:
		this.WmMouseMove(msg);
		return;
	break;
	case 6:
		this.WmMouseDown(msg, 2097152, 2);
		return;
	break;
	case 4:
		this.WmMouseDown(msg, 2097152, 1);
		return;
	break;
	case 5:
		if (this.contextMenu != null)
		this.ShowContextMenu();
		this.WmMouseUp(msg, 2097152);
		return;
		i3: if (IntPtr.Zero == msg.LParam) {
			if (!(Command.DispatchID(
msg.WParam & 65535)))
				goto i5;
				return;
			}
			this.window.DefWndProc(msg);
			return;
		i4: if (msg.Msg == NotifyIcon.WM_TASKBARCREATED)
			this.WmTaskbarCreated(msg);
			this.window.DefWndProc(msg);
			return;
		i5: return;
	break;
	default:
		return;
	}
}

private void ShowContextMenu() {
POINT local0;

if (this.contextMenu != null) {
	local0 = new POINT();
	UnsafeNativeMethods.GetCursorPos(local0);
	UnsafeNativeMethods.SetForegroundWindow(this.window.Handle);
	this.contextMenu.OnPopup(EventArgs.Empty);
	SafeNativeMethods.TrackPopupMenuEx(this.contextMenu.Handle, 64, 
  local0.x, local0.y, this.window.Handle, null);
	UnsafeNativeMethods.PostMessage(
  this.window.Handle, 0, IntPtr.Zero, IntPtr.Zero);
}

}

using System.IO;
using System.Runtime.InteropServices;
using System.Text;
 
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern int GetShortPathName(
    [MarshalAs(UnmanagedType.LPTStr)]
    string path,
    [MarshalAs(UnmanagedType.LPTStr)]
    StringBuilder shortPath,
    int shortPathLength);
 
public static string GetShortPathName(string fileName)
{
    if (fileName == null || fileName.Length == 0) 
        return string.Empty;
    
    if (!Path.IsPathRooted(fileName)) 
        fileName = Path.GetFullPath(fileName);
    
    try 
    {
        int len = GetShortPathName(fileName, null, 0);
        if (len > 0) 
        {
            StringBuilder sb = new StringBuilder(len);
            GetShortPathName(fileName, sb, len);
            return sb.ToString();
        }
        else
            return fileName;
    }
    catch 
    {
        return fileName;
    }
}

You see the Standards change. - Fellow co-worker