Shoutbox

How would I go about regularly checking whether this window exists:

WMP9MediaBarFlyout1342137C

and then stop it from becoming visible using some means (I guess DestroyWindow would be sufficient here)? I'd imagine FindWindowEx would be needed, but I don't know where to start; I need to find a practical way of regularly checking on the window, as in, when it happens, not every five seconds or so.

Thanks in advance

Dunno if one can actually "block" windows, but you can indeed find it and close it:

JScript code:

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function FindWindow(hWndParent,lpszClass,lpszWindow) {
    if(typeof hWndParent !== "number") hWndParent = 0;
    if(typeof lpszClass !== "string") lpszClass = 0; // NULL
    if(typeof lpszWindow !== "string") lpszWindow = 0; // NULL
    var hWndReturn = 0;
    do {
        hWndReturn = Interop.Call("User32.dll","FindWindowExW",hWndParent,hWndReturn,lpszClass,lpszWindpw);
    } while(hWndReturn !== 0)
    return hWndReturn;
}

function CloseWindow() {
    Interop.Call("User32.dll",
    "DestroyWindow",
    FindWindow(0 /* do you have a parent window? */,
        "WMP9MediaBarFlyout1342137C" /* I think it's the class name you're talking about? */));
}

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Should work this way. Note that if "WMP9MediaBarFlyout1342137C" the window title (and not the class name), you need to send 0, 0 and WMP9MediaBarFlyout1342137C respectively.

If you write a DLL (then load it from plus), you can use it to install a CBT hook which will allow you to filter windows as they are created.

See SetWindowsHookEx and HCBT_CREATEWND in CBTProc

Is that actually possible? Cuz I think the pointer to CBTProc is asynchronous.

I guess I should explain a bit more. All I want is a simple way to check whether this popup window exists:



and get rid of it by some means, most likely DestroyWindow. It looks like the parent window is indeed the desktop, and it is the class name, so the script should work, but it doesn't seem to be able to find the window, just keeps giving me 0.

The reason why I want to get rid of it is because when I change tracks in WMP, it pops up.

I hope they get rid of that in WMP11

quote:

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Originally posted by SmokingCookie
Is that actually possible? Cuz I think the pointer to CBTProc is asynchronous.

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As long as the DLL stays loaded, it shouldn't be a problem.  (the CBTProc would need to be in the DLL, and you may as well install the hook from inside the DLL as well.)

quote:

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Originally posted by ryxdp
but it doesn't seem to be able to find the window, just keeps giving me 0.

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Are you sure the class name is "WMP9MediaBarFlyout1342137C" and not just "WMP9MediaBarFlyout"?  If the window exists and you've got the class name correct, it *should* be found.  How are you determining the class name?  Spy++?

quote:

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Originally posted by TheSteve
Are you sure the class name is "WMP9MediaBarFlyout1342137C" and not just "WMP9MediaBarFlyout"?  If the window exists and you've got the class name correct, it *should* be found.  How are you determining the class name?  Spy++?

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I'm using Winspector:

Try tracing out the parameters right before the call to FindWindowExW.  Make sure that they are being passed correctly. (not getting messed up by the "typeof var")

Well, it looks like the DestroyWindow function is failing, which suggests (to me) that WMP is somehow preventing it from being destroyed...

You can't DestroyWindow() another program's window:

quote:

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MSDN - DestroyWindow() Function
A thread cannot use DestroyWindow to destroy a window created by a different thread.

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Please nicely send WM_CLOSE message to that window and let it decide whether to close or not