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The Old New Thing
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    The Old New Thing

    April 2007 - The Old New Thing

    Everyone should have a house pianist
    Everyone should have a house pianist
    April 30, 2007 Apr 30, 2007 04/30/07
    Raymond C
    Last year, a request was sent out to a social mailing list that went something like this: Hi, everybody. My girlfriend is coming to visit for a week, and she's a pianist. Does anybody have a piano they would be willing to let her practice on while she's here? I offered the piano in my living room and gave him the key to my house. I came ...

    Comments are closed.0Non-Computer
    The default verb is not necessarily "open"
    The default verb is not necessarily "open"
    April 30, 2007 Apr 30, 2007 04/30/07
    Raymond C
    If you hunt around the Internet you'll find lots of people† who hard-code the string "open" as the second parameter to the ShellExecute function, indicating that they want to open the document specified as the third parameter. While that's a nice thing to want to do, it might not be the right thing. When the user double-clicks a ...

    Comments are closed.0Code
    News Flash: Not being able to watch Jay Leno is not an emergency
    News Flash: Not being able to watch Jay Leno is not an emergency
    April 27, 2007 Apr 27, 2007 04/27/07
    Raymond C
    The Mesa (Arizona) Police Department reminds us in a press release that 9-1-1 is for emergencies, and the inability to watch Jay Leno due to a power outage does not qualify as an emergency. (Noting, because everybody else will, that this is not the same as the unconfirmed of the woman who called 9-1-1 for a cheeseburger emergency.) Update...

    Comments are closed.0News flashNon-Computer
    Stupid debugger tricks: Calling functions and methods
    Stupid debugger tricks: Calling functions and methods
    April 27, 2007 Apr 27, 2007 04/27/07
    Raymond C
    Back in the old days, if you wanted to call a function from inside the debugger, you had to do it by hand: Save the registers, push the parameters onto the stack (or into registers if the function uses fastcall or thiscall) push the address of the ntdll!DbgBreakPoint function, move the instruction pointer to the start of the function you want...

    Comments are closed.0Code
    The intermediate value theory helps your table but not necessarily your beer
    The intermediate value theory helps your table but not necessarily your beer
    April 26, 2007 Apr 26, 2007 04/26/07
    Raymond C
    An Australian mathematician applied intermediate value theory to the problem of keeping a table from wobbling: Just rotate the table and you'll eventually find a spot. A few things struck me about that article. First, that it explains that intermediate value theory "is the same principle underlying the fact that there will always be two ...

    Comments are closed.0Non-Computer
    Using the "gu" debugger command to find the infinite loop
    Using the "gu" debugger command to find the infinite loop
    April 26, 2007 Apr 26, 2007 04/26/07
    Raymond C
    Somebody says, "Your program is consuming 100% CPU" and hands you a debug session. Usually, this happens because one thread has gotten stuck in an infinite loop. And if you're lucky it's the type of infinite loop that's easy to diagnose because it's just one function that isn't returning. (The more complicated types are where a function does ...

    Comments are closed.0Other
    There's something about Christopher Walken
    There's something about Christopher Walken
    April 25, 2007 Apr 25, 2007 04/25/07
    Raymond C
    Actor Christopher Walken has such a peculiar speaking style, he's inspired a theater show: All About Walken. The run ends soon, so if you're going to see it, you'll have to act fast...

    Comments are closed.0Non-Computer
    Identifying an object whose underlying DLL has been unloaded
    Identifying an object whose underlying DLL has been unloaded
    April 25, 2007 Apr 25, 2007 04/25/07
    Raymond C
    Okay, so I gave it away in the title, but follow along anyway. Your program chugs along and then suddenly it crashes like this: Instantly you recognize the following: This is a virtual method call. (Call indirect through register plus offset.) — Very high confidence. The vtable is in ecx. (That is the base register of...

    Comments are closed.0Other
    How much time does it take for a pedestrian to cross the street?
    How much time does it take for a pedestrian to cross the street?
    April 24, 2007 Apr 24, 2007 04/24/07
    Raymond C
    It sounds like the set-up to an old joke, but it's not. It's just one of the random bits of trivia that I wondered about. For intersections with both high pedestrian and high vehicle volumes, I was able to find the Federal Highway Administration recommendation, which is to give pedestrians a head start to allow them to cross one lane of ...

    Comments are closed.0Non-Computer
    What is the underlying object behind a COM interface pointer?
    What is the underlying object behind a COM interface pointer?
    April 24, 2007 Apr 24, 2007 04/24/07
    Raymond C
    When you're debugging, you might have a pointer to a COM interface and want to know what the underlying object is. Now, sometimes this trick won't work because the interface pointer actually points to a stub or proxy, but in the case where no marshalling is involved, it works great. (This technique also works for many C++ compilers for any ...

    Comments are closed.0Other
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