Windows – How to edit keyboard registry settings for keys with 3-character scan-codes

I think this article should help you: http://msdn.microsoft.com/en-us/library/windows/desktop/ee416808(v=vs.85).aspx

If you look at the second example, you will see that it basically gives you what you want. You may put the code that's going to be below (Aside from the WinMain method) in a separate file and have your program call it.

STICKYKEYS g_StartupStickyKeys = {sizeof(STICKYKEYS), 0};
TOGGLEKEYS g_StartupToggleKeys = {sizeof(TOGGLEKEYS), 0};
FILTERKEYS g_StartupFilterKeys = {sizeof(FILTERKEYS), 0};    


INT WINAPI WinMain( HINSTANCE, HINSTANCE, LPSTR, int )
{
    // Save the current sticky/toggle/filter key settings so they can be restored them later
    SystemParametersInfo(SPI_GETSTICKYKEYS, sizeof(STICKYKEYS), &g_StartupStickyKeys, 0);
    SystemParametersInfo(SPI_GETTOGGLEKEYS, sizeof(TOGGLEKEYS), &g_StartupToggleKeys, 0);
    SystemParametersInfo(SPI_GETFILTERKEYS, sizeof(FILTERKEYS), &g_StartupFilterKeys, 0);

    // Disable when full screen
    AllowAccessibilityShortcutKeys( false );

    // Restore back when going to windowed or shutting down
    AllowAccessibilityShortcutKeys( true );
}


void AllowAccessibilityShortcutKeys( bool bAllowKeys )
{
    if( bAllowKeys )
    {
        // Restore StickyKeys/etc to original state and enable Windows key      
        STICKYKEYS sk = g_StartupStickyKeys;
        TOGGLEKEYS tk = g_StartupToggleKeys;
        FILTERKEYS fk = g_StartupFilterKeys;

        SystemParametersInfo(SPI_SETSTICKYKEYS, sizeof(STICKYKEYS), &g_StartupStickyKeys, 0);
        SystemParametersInfo(SPI_SETTOGGLEKEYS, sizeof(TOGGLEKEYS), &g_StartupToggleKeys, 0);
        SystemParametersInfo(SPI_SETFILTERKEYS, sizeof(FILTERKEYS), &g_StartupFilterKeys, 0);
    }
    else
    {
        // Disable StickyKeys/etc shortcuts but if the accessibility feature is on, 
        // then leave the settings alone as its probably being usefully used

        STICKYKEYS skOff = g_StartupStickyKeys;
        if( (skOff.dwFlags & SKF_STICKYKEYSON) == 0 )
        {
            // Disable the hotkey and the confirmation
            skOff.dwFlags &= ~SKF_HOTKEYACTIVE;
            skOff.dwFlags &= ~SKF_CONFIRMHOTKEY;

            SystemParametersInfo(SPI_SETSTICKYKEYS, sizeof(STICKYKEYS), &skOff, 0);
        }

        TOGGLEKEYS tkOff = g_StartupToggleKeys;
        if( (tkOff.dwFlags & TKF_TOGGLEKEYSON) == 0 )
        {
            // Disable the hotkey and the confirmation
            tkOff.dwFlags &= ~TKF_HOTKEYACTIVE;
            tkOff.dwFlags &= ~TKF_CONFIRMHOTKEY;

            SystemParametersInfo(SPI_SETTOGGLEKEYS, sizeof(TOGGLEKEYS), &tkOff, 0);
        }

        FILTERKEYS fkOff = g_StartupFilterKeys;
        if( (fkOff.dwFlags & FKF_FILTERKEYSON) == 0 )
        {
            // Disable the hotkey and the confirmation
            fkOff.dwFlags &= ~FKF_HOTKEYACTIVE;
            fkOff.dwFlags &= ~FKF_CONFIRMHOTKEY;

            SystemParametersInfo(SPI_SETFILTERKEYS, sizeof(FILTERKEYS), &fkOff, 0);
        }
    }
}

Hopefully this helps.

This is a generic way to remap any keyboard buttons. Even weird ones

1. Use KeyCodes (portable,415 KB) to catch the key code. Download, extract and start KeyCodes3.exe. Press your mysterious button and you'll see the key code as decimal number

   

   An alternative way was this AHK script which uses a keyboard hook and "KeyHistory"

   #Persistent
   #InstallMouseHook
   #InstallKeybdHook
   while !(getKeyState("F1", "T"))
         KeyHistory
   return
   esc::exitapp
   

   

2. Convert the number from decimal to hexadecimal: 171 » AB

3. Use the portable version of AutoHotKey to remap the button.
   Download and extract the .zip version of your choice somewhere. No installation needed.
   Create a new text file and paste

   #NoEnv, #Persistent, #SingleInstance
   vkB5::return                ;music node button  181 » B5   do nothing
   vkAC::return                ;home button        172 » AC   do nothing
   vkAA::return                ;search button      170 » AA   do nothing
   vkAB::Run, c:\myapp.exe     ;star button        171 » AB   execute tool
   vkB4::Send {Volume_Mute}    ;mail button        180 » B4   mute/unmute
   

   • vk stands for virtual key code followed by your hexadezimal key code you want to remap
   • :: is the remap operator. Left is the trigger, right of it is your new button or action
   • Send {<my_new_key>} could be any key from this list.
     Alternatively you could execute a custom path with the Run command.
     Or if you want to to execute a media button again, use {vkAB} as action

4. Create a new shortcut in your autostart folder to start your AHK script on each boot. For example

   "D:\Tools\AutoHotKey\AutoHotkey.exe" "D:\Tools\AutoHotKey\RemapKeys.ahk"
   

After a reboot or manual AHK script start, all buttons are remapped