Resolved! Thanks, matty!

Hi everyone,

I've been avoiding updating to WLM 2011 and Plus 5 on my main machine for a while now because of a huge issue with one of the scripts I've developed. Basically, it adjusts the taskbar icon for the chat conversation depending upon the contact's current status. It works perfectly on Plus 4.9 with WLM 2009, but when using the exact same script with Plus 5 and WLM 2011 on another machine, it just doesn't. This feature has become essential for me and I just cannot update without it.

My issue is this function I wrote doesn't seem to work anymore:

code:

---

function ChangeIcon(Window, Icon)
{
    var icon = Interop.Call("user32.dll", "LoadImageW", null, Icon, IMAGE_ICON, 0, 0, LR_LOADFROMFILE);
    Interop.Call("user32.dll", "SendMessageW", Window.Handle, WM_SETICON, ICON_SMALL, icon);
    Interop.Call("user32.dll", "SendMessageW", Window.Handle, WM_SETICON, ICON_BIG, icon); // Required for bigger icon for Windows 7
}

---

Last time I looked (investigated) it was something to do with tabbed chats and their container they were placed in. Now since you have disabled tabbed chats it should work.

I just bought a netbook as my main laptop died and obviously programming on a 10 inch screen is next to impossible. Therefore unfortunately I cannot help you any further than this at the moment (plus I am at work).

quote:

---

Originally posted by matty
Last time I looked (investigated) it was something to do with tabbed chats and their container they were placed in. Now since you have disabled tabbed chats it should work.

I just bought a netbook as my main laptop died and obviously programming on a 10 inch screen is next to impossible. Therefore unfortunately I cannot help you any further than this at the moment (plus I am at work).

---

When you say SendMessageW is failing do you mean the icon just isn't being applied (which is what I assume). What is the return value of the function call?

What I would like you to try is this:

Javascript code:

---

function OnEvent_ChatWndCreated(pChatWnd) {
    /*
   
        Value           Meaning
        GA_PARENT(1)    Retrieves the parent window. This does not include the owner, as it does with the GetParent function.
        GA_ROOT(2)      Retrieves the root window by walking the chain of parent windows.
        GA_ROOTOWNER(3) Retrieves the owned root window by walking the chain of parent and owner windows returned by GetParent.
       
    */
   
    var hWnd;
    var MAX = 255;
    for (var i=1;i<4;i++) {
        hWnd = Interop.Call('user32', 'GetAncestor', pChatWnd.Handle, i);
        var lpszClassName = Interop.Allocate(2*MAX+2);
        Interop.Call('user32', 'GetClassNameW', hWnd, lpszClassName, lpszClassName.Size);
        Debug.Trace('i :: '+i);
        Debug.Trace('   pPlusWnd.Handle :: '+pChatWnd.Handle);
        Debug.Trace('   hWnd :: '+hWnd);
        Debug.Trace('   lpszClassName :: '+lpszClassName.ReadString(0));
        lpszClassName.Size = 0;
    }
}

---

Codes ugly I know

Oh, thanks! That looks rather awesome.

Unfortunately, it seems it can't locate GetClassName in user32 That's weird...

quote:

---

Interop.Call failed to locate function "GetClassName"

---

Check for the updated code in the post. My bad I was in a rush at work.

And just as I suspected. There is still a container around the chat windows:

With tabbed chats enabled (opened 2 chats)
Function called: OnEvent_ChatWndCreated
i :: 1
   pPlusWnd.Handle :: 722674
   hWnd :: 722626
   lpszClassName :: MsgrViewHost View Host
i :: 2
   pPlusWnd.Handle :: 722674
   hWnd :: 722620
   lpszClassName :: TabbedHostWndClass
i :: 3
   pPlusWnd.Handle :: 722674
   hWnd :: 722620
   lpszClassName :: TabbedHostWndClass
Function called: OnEvent_ChatWndCreated
i :: 1
   pPlusWnd.Handle :: 788166
   hWnd :: 722626
   lpszClassName :: MsgrViewHost View Host
i :: 2
   pPlusWnd.Handle :: 788166
   hWnd :: 722620
   lpszClassName :: TabbedHostWndClass
i :: 3
   pPlusWnd.Handle :: 788166
   hWnd :: 722620
   lpszClassName :: TabbedHostWndClass

Tabbed chats disabled (opened 2):
Function called: OnEvent_ChatWndCreated
i :: 1
   pPlusWnd.Handle :: 591454
   hWnd :: 787436
   lpszClassName :: MsgrViewHost View Host
i :: 2
   pPlusWnd.Handle :: 591454
   hWnd :: 722550
   lpszClassName :: TabbedHostWndClass
i :: 3
   pPlusWnd.Handle :: 591454
   hWnd :: 722550
   lpszClassName :: TabbedHostWndClass
Function called: OnEvent_ChatWndCreated
i :: 1
   pPlusWnd.Handle :: 1049672
   hWnd :: 853746
   lpszClassName :: MsgrViewHost View Host
i :: 2
   pPlusWnd.Handle :: 1049672
   hWnd :: 721894
   lpszClassName :: TabbedHostWndClass
i :: 3
   pPlusWnd.Handle :: 1049672
   hWnd :: 721894
   lpszClassName :: TabbedHostWndClass

OMG! Thank you so much! You are awesome! I had thought it was something to do with tabbed chats, but I didn't know why, and why it would still be an issue even with them disabled.

I've managed it with GA_ROOTOWNER and it works again! YAY!

Thank you! All I need to figure out now, if it's possible, is to detect if tabbed chats are enabled or not, and not to update the icon if not, but it's not that crucial as anyone who would use this when I release it would have them disabled anyway. Still, it would be nice to just avoid it doing it.

Thank you again! I'll consider releasing it at some point soon as others should hopefully benefit from this as well

quote:

---

Originally posted by Domsy
All I need to figure out now, if it's possible, is to detect if tabbed chats are enabled or not, and not to update the icon if not, but it's not that crucial as anyone who would use this when I release it would have them disabled anyway. Still, it would be nice to just avoid it doing it.

---

The setting for tabbed chats in WLM 2011 is stored in the registry at
HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger\PerPassportSettings\USERID
under the binary registry value ShowConvWndTabs. This REG_BINARY value consists of 4 bytes representing a little-endian 32-bit integer which equals 1 (01 00 00 00) when tabbed chats are enabled or 0 (00 00 00 00) when they are disabled. Actually, this format is identical to REG_DWORD which defaults to little-endian.

Normally, you should only have to read the value and check whether it's non-zero to determine the state.

As for reading a REG_BINARY from the registry, you'll probably want to use some registry functions for that. Screenshot Sender 5 comes with a nifty set of registry functionalities which support REG_BINARY. Feel free to use that script file but please credit the original authors in a comment block at the top of the file.

However, the Screenshot Sender implementation reads binary values as strings where each two bytes represents a Unicode character (as it's mainly used for string data in the script). If you're planning to use this, you'll either need to modify Registry_GetKeyValue to read the value as a number or convert the string data to a number first after calling Registry_GetKeyValue. That's up to you.

quote:

---

Originally posted by matty
HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger\PerPassportSettings\%Messenger.MyUserId%\DisableTabs
0: Enabled
1: Disabled

---

Oh, wow, thanks! That's quite involved just to check for something that's not too crucial in my case, particularly if I'm going to be doing that every single event (not sure how heavy registry checks are)... May not be worth it...

Might be best to check this value once on OnEvent_Intialize and if it's enabled, notify the user and disable the script.

... except I can't seem to find a disable script command. Doh... Is there one? Lol. Maybe an 'artificial disable' would be needed instead, but that's extra script that's probably not worthwhile.

For stuff like checking what windows are created and which childs and parents there are, the well known developers tool Spy++ which comes with Visual Studio (or any other clone like Systree++) is essential.

Also see:
http://blogs.msdn.com/b/vcblog/archive/2007/01/16/spy-internals.aspx
http://blogs.msdn.com/b/vcblog/archive/2007/03/22/spy-update.aspx
if you're interested in how this tool works

----

To detect if tabbed chats is enabled the easiest would be to check that option's registry value. You can also check if the TabbedHostWndClass class exists. I see others already said this...

EDIT:

quote:

---

Originally posted by Matti
As for reading a REG_BINARY from the registry, you'll probably want to use some registry functions for that. Screenshot Sender 5 comes with a nifty set of registry functionalities which support REG_BINARY. Feel free to use that script file but please credit the original authors in a comment block at the top of the file.

---

quote:

---

Originally posted by Domsy
Oh, wow, thanks! That's quite involved just to check for something that's not too crucial in my case, particularly if I'm going to be doing that every single event (not sure how heavy registry checks are)... May not be worth it...

---

quote:

---

Originally posted by Domsy
... except I can't seem to find a disable script command. Doh... Is there one?

---

Disabling your script is not possible and is not such a great idea either. It's not up to the script to decide whether it should be enabled or not. Cookie's suggestion is much better.

quote:

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Originally posted by CookieRevised
You don't need to read it as a REG_BINARY if that binary string represents a DWORD (4 bytes). Just read it as a REG_DWORD in that case.

As such, a full blown registry libary for just checking 1 value is also very much over the top. Reading that registry key can also be done using the build-in regkey functions.

---

Ok, wow, thanks for all the info.

My concern about 'every single event' was due to the fact I have to hook many events for my script to work: OnEvent_ContactStatusChange, _ContactSignin, _ContactSignout, and _ChatWndCreated. But yes, ChatWndCreated is probably the only event I actually need to do the registry check for. Cool! I can just do an unobtrusive toast notification, then, notifying the user the script won't function while tabbed chats is enabled.

Thanks very much! If it's ok with you, I'd like to send one/all of you my script when I'm done if you'd be willing to try it out, if you have the time? I'd appreciate your input! Also, you might actually find it really helpful; I don't know what I'd do without it now! (I've actually been using it since 2009!)

You need to check the registry value each time because Microsoft allows the user to, in real time, disable and enable tabbed chats.

quote:

---

Originally posted by Matti

quote:

---

Originally posted by CookieRevised
You don't need to read it as a REG_BINARY if that binary string represents a DWORD (4 bytes). Just read it as a REG_DWORD in that case.

As such, a full blown registry libary for just checking 1 value is also very much over the top. Reading that registry key can also be done using the build-in regkey functions.

---

I fully agree with you, but the RegRead function provided by WScript.Shell will return a VBArray of integers when reading from a REG_BINARY. It doesn't provide a way to override how the value is read, thus one will need to fall back on the Windows API functions to read as a different type. I don't know how a VBArray would look like in JScript though but it doesn't sound too great.

---

Javascript code:

---

try {
    var oShell = new ActiveXObject("WScript.Shell");
    var bTabsEnabled = oShell.RegRead("HKCU\\Software\\Microsoft\\MSNMessenger\\PerPassportSettings\\" +  Messenger.MyUserID + "\\DisableTabs");
    bTabsEnabled = new Boolean(bTabsEnabled.toArray().join(""));
} catch(e) {
    var bTabsEnabled = false;
}

---

quote:

---

Originally posted by matty
You need to check the registry value each time because Microsoft allows the user to, in real time, disable and enable tabbed chats.

---

quote:

---

Originally posted by CookieRevised
Correct though (I forgot there was no second parameter to specify the type when you read a key). However, there is nothing difficult about a VBArray. In fact using toArray() is all it takes to convert it.

Javascript code:

---

try {
    var oShell = new ActiveXObject("WScript.Shell");
    var bTabsEnabled = oShell.RegRead("HKCU\\Software\\Microsoft\\MSNMessenger\\PerPassportSettings\\" +  Messenger.MyUserID + "\\DisableMSNToday");
    bTabsEnabled = new Boolean(bTabsEnabled.toArray().join(""));
} catch(e) {
    var bTabsEnabled = false;
}

---

---

PS: note that I my example code I used
"DisableMSNToday" instead of "DisableTabs" (for testing purposes). So make sure you edit it to the correct key
I've edited my previous post....

quote:

---

Originally posted by CookieRevised
PS: note that I my example code I used
"DisableMSNToday" instead of "DisableTabs" (for testing purposes). So make sure you edit it to the correct key
I've edited my previous post....

---

quote:

---

Originally posted by Domsy
My concern about 'every single event' was due to the fact I have to hook many events for my script to work: OnEvent_ContactStatusChange, _ContactSignin, _ContactSignout, and _ChatWndCreated.

---

quote:

---

Originally posted by CookieRevised
in that case you must check the value in each and every event!
Because between contact status changes for example, the user could have enabled/disabled tabbed chatting. In essence, you need to check the value each time your script manipulates (sets) the icon!!

---

quote:

---

Originally posted by CookieRevised
This said, depending on what your script _exactly_ does, and how WLM 2011 _exactly_ uses its container windows and what the function is of that other key (ShowConvWndTabs) - can't check, I don't run WLM 2011 atm- it may also be possible to simply forget about checking those registry keys, and simply check if the container window, for which you want to manipulate the icon, exists (which you should do anyways or your icon APIs might fail). It might be enough.

---

code:

---

bTabsEnabled = (Boolean)((Number)(reg.toArray().join('')));

---

Cookie couldn't you do something along these lines?

Javascript code:

---

// Registry key locations  
var HKEY_CURRENT_USER = 0x80000001;
var HKCU = HKEY_CURRENT_USER;
var HKEY_LOCAL_MACHINE = 0x80000002;
 
// Registry key constants
var ERROR_SUCCESS = 0;
var KEY_ALL_ACCESS = 0xf003f;
 
// Registry Notify Filters
var REG_NOTIFY_CHANGE_LAST_SET = 0x4;
 
// Script variables
var MAX = 255;
var RegHandle;
var INFINITE = 0xFFFFFFFF;
var WAIT_FAILED = 0xFFFFFFFF;
 
function Registry_OpenKey(HKEY, lpSubKey, samDesired) {
    if (typeof samDesired === 'undefined') samDesired = KEY_ALL_ACCESS;
    var h = Interop.Allocate(4);
    Interop.Call('advapi32', 'RegOpenKeyExW', HKEY, lpSubKey, 0, samDesired, h);
    return h.ReadDWORD(0);
}
 
function Registry_CloseKey(HKEY) {
    return Interop.Call('advapi32', 'RegCloseKey', HKEY) === ERROR_SUCCESS;
}
 
function OnEvent_Initialize() {
    if (Messenger.MyStatus < STATUS_INVISIBLE) return false;
    MonitorRegistry(HKCU, 'Software\\Microsoft\\MSNMessenger\\PerPassportSettings\\' +  Messenger.MyUserID, true);
}
 
function OnEvent_SigninReady() {
    OnEvent_Initialize();
}
 
function OnEvent_Uninitialize() {
    Registry_CloseKey(RegHandle);
}
 
function MonitorRegistry(HKEY, lpSubKey, bContinueMonitoring) {
    RegHandle = Registry_OpenKey(HKEY, lpSubKey);
   
    var SECURITY_ATTRIBUTES = Interop.Allocate(12);
        SECURITY_ATTRIBUTES.WriteDWORD(0, 12);
       
    var lpszName = Interop.Allocate(2*MAX+2);
        lpszName.WriteString(0, 'MonitorRegistry');
    var lpName = Interop.Allocate(4);
        lpName.WriteDWORD(0, lpszName.DataPtr);
       
    var hEvent = Interop.Call('kernel32', 'CreateEventW', SECURITY_ATTRIBUTES.DataPtr, true, false, lpName.DataPtr);
   
    var retVal = Interop.Call('advapi32', 'RegNotifyChangeKeyValue', RegHandle, false, REG_NOTIFY_CHANGE_LAST_SET, hEvent, false);
   
    if (retVal === ERROR_SUCCESS) {
        if (Interop.Call('kernel32', 'WaitForSingleObject', hEvent, INFINITE) === WAIT_FAILED) {
            // WAIT_FAILED, NO CHANGE OCCURED
        } else {
            // CHANGE OCCURED
            // READ ShowConvWndTabs
           
            Registry_CloseKey(RegHandle);
            Interop.Call('kernel32', 'CloseHandle', hEvent);
            if (bContinueMonitoring) {
                MonitorRegistry(HKEY, lpSubKey, bContinueMonitoring);
            }
        }
    }
}

---

As you found out, nope you can't because the scripting engine doesn't support such calls (same with subclassing).
You could indeed write a DLL for that though. Although for this particular script I think it is not worth the hassle.

quote:

---

Originally posted by Domsy
A little modification I had to make. It didn't seem to like the "new Boolean()" thing, and I had to typecast the join result as a Number. Ended up with:

code:

---

bTabsEnabled = (Boolean)((Number)(reg.toArray().join('')));

---

---

Note that there actually is no such thing as type casting in JScript. It may look and work like type casting, but actually you're calling a function which happens to behave like a cast.

The following code:

Javascript code:

---

var bool = (Boolean)(5);

---

Javascript code:

---

var bool = Boolean(5);

---

Javascript code:

---

var A = function(){};
var B = function(){};
B.prototype = new A;
 
var b = new B;
Debug.Trace(b instanceof A); // -> true
Debug.Trace(b instanceof B); // -> true
var a = (A)(b);
Debug.Trace(a instanceof A); // -> false?!?!
Debug.Trace(a instanceof B); // -> false?!?!

---

Javascript code:

---

var a = Boolean( "true" );
Debug.Trace(a); // -> true
Debug.Trace(typeof a); // -> boolean
 
var b = !!"true";
Debug.Trace(b); // -> true
Debug.Trace(typeof b); // -> boolean
 
var c = new Boolean( "true" );
Debug.Trace(c); // -> true
Debug.Trace(typeof c); // -> object?!?!

---

Javascript code:

---

Number.prototype.isFive = function() {
   Debug.Trace(typeof this); // -> object?!?!
   return this === 5;
}
Debug.Trace( (5).isFive() ); // -> false?!?!

---

Javascript code:

---

bTabsEnabled = (Boolean)((Number)(reg.toArray().join('')));

---

Javascript code:

---

bTabsEnabled = !!(1*(reg.toArray().join('')));

---