'Nuther (and final?) Hooking question.

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C++

Hi,

I am syncing the saving of my application data with the file saving of the plug-in my com dll is plugged into. I have successfully hooked File,save and Ctrl-S. There is one final saving scenario that I would like to cover.

When the application's data file is changed and the user closes the application with File Close or the Red X, then the application pops up a MessageBox with the familiar, "Save changes to filename?"

I can see when the MessageBox pops up using the code in a WH_CBT hookproc below.

if(nCode == HCBT_ACTIVATE)
{
    char WindowString[40];
    GetWindowText((HWND)wParam,WindowString,40);
    if(!strcmp(WindowString,"The Application's Name"))
    {
        HWND txtLabel = GetDlgItem((HWND)wParam,0xffff);
        GetWindowText(txtLabel,WindowString,16);

        if(!strcmp(WindowString,"Save changes to"))
            // Save our 2k of data quickly as we are closing...
        }
    }
}

Now when the user clicks Yes, a WM_NOTIFY is sent out with the ID but I can's seem to trap
that message in any hook type tried thus far. And googling around, I find myself in a sea of MessageBox modification threads.

Is catching the Yes button push possible? Must be if Spy++ can do it.

Thanks

:Ron