Hi all,

I'm a fairly competent java developer, but have next no knowledge about c#.

For my own personal use, I'd like to code an app that disables the icons on the titlebars of all visible windows of the windows os. I want all icons of the taskbar gone (exept the system tray area). This is how it should look when it's done: http://www.askvg.com/how-to-remove-p...skbar-buttons/ (this little autohotkey script is broken in win 7)
I use PInvoke to enumerate all visible windows to send a message to them to replace their icon by a blank one.

This is what I got so far from various code sniplets I found on the interwebs:

using System;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
namespace RemoveAllApplicationIcons
    class Program
        // Import the needed Windows-API functions:

        // ... for enumerating all running desktop windows
        static extern bool EnumDesktopWindows(IntPtr hDesktop, EnumDesktopWindowsDelegate lpfn, IntPtr lParam);
        private delegate bool EnumDesktopWindowsDelegate(IntPtr hWnd, int lParam);
        // ... for getting window informations only from a handle
        private static extern int GetWindowText(IntPtr hWnd, StringBuilder title, int size);
        private static extern bool IsWindowVisible(IntPtr hWnd);
        // ... for loading an icon
        static extern IntPtr LoadImage(IntPtr hInst, string lpsz, uint uType, int cxDesired, int cyDesired, uint fuLoad);
        // ... for sending messages to other windows
        static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
        // Setup some "global" variables

        /// Pointer to an empty icon used to replace all other application icons.
        static IntPtr m_pIcon = IntPtr.Zero;
        // List of filter window-titles
        static string[] m_astrFilter = new string[] { "Start", "Program Manager" };
        static void Main(string[] args)
            // Load the empty icon (from a file in this example)
            string strIconFilePath = @"C:\blank.ico"; // Replace with a valid path on your system!
            const int IMAGE_ICON = 1;
            const int LR_LOADFROMFILE = 0x10;
            IntPtr pIcon = LoadImage(IntPtr.Zero, strIconFilePath, IMAGE_ICON, 0, 0, LR_LOADFROMFILE);
            // enumerate all desktop windows
            EnumDesktopWindows(IntPtr.Zero, new EnumDesktopWindowsDelegate(EnumDesktopWindowsCallback), IntPtr.Zero);
        private static bool EnumDesktopWindowsCallback(IntPtr hWnd, int lParam)
            // Get window title
            StringBuilder title = new StringBuilder(256);
            GetWindowText(hWnd, title, 256);
            string strTitle = title.ToString();
            // Get window visibillity
            bool bVisible = IsWindowVisible(hWnd);
            // window meets all criteria?
            if (bVisible && // ... visible
               !String.IsNullOrEmpty(strTitle) && // ... has title
               !m_astrFilter.Contains(strTitle)) // ... not in filter list
                // replace icon now
                SendMessage(hWnd, 0x80, IntPtr.Zero, m_pIcon);
                Console.WriteLine(title); // for debugging only
            return true;
I get all the windows I want to send a message to (titles appear in the output) and the screen flashes when I execute the compiled exe, but all the icons remain unchanged.

I would appreciate any help to get rid of those pesky icons. Thank you,