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In the discussions following why Windows setup lays down a new boot sector, some commenters suggested that Windows setup could detect the presence of a non-Windows partition as a sign that the machine onto which the operating system is being installed belongs to a geek. In that way, the typical consumer would be spared from having to deal with a ...

Commenter Pavel Vozenilek noticed that if you type my name into Google, there is only one sponsored link, and it's from Google themselves, inviting you to apply for a job there. (Maybe I should sue. Perhaps I can get a settlement.) When I mentioned this to some other people at Microsoft, they started hunting around to see what sort of ads cam...

There are many ways a program can establish itself as a single-instance program; I won't go into them here. But once people head down the path of a single-instance program, they bump into another issue in their security review: Denial of service. We are using a named mutex with a fixed name in order to detect whether another copy of the program is...

The classic Start menu and the "All Programs" portion of the Windows XP Start menu permit you to customize the order of the shortcuts that appear there. You can use drag/drop to rearrange them, or force them to be sorted by name. But why is there no programmatic interface to these actions? Because the power would be used for evil far more tha...

A double-precision floating point number carries fifteen significant digits. What does this really mean? I multiplied 0.619207 by 10,000,000 and got 6192069.999999991 instead of 6192070. That's only six significant digits; where's my fifteen? Talking about significant digits is really just a shorthand for talking about relative precision. "Fifte...

I don't mean to pick on this series of entries, but it illustrates an interesting pattern of stumbling across the wrong "solution". The series begins by attempting to trigger the system's monitor blank timeout by posting a message to the desktop window. As we saw earlier, the desktop window is a very special window and as a rule should be avoi...

Windows XP shipped with new icons for many common items in the shell, and Windows Vista will have even more and newer icons. One of the things the designers have to be careful about with drawing these icons is to make sure they don't actually look like anything. Let me clarify. The folder icon, for example, is not based on any actual phy...

Increasingly, I'm seeing solving problems by adding more dialog boxes. Asking the user too much is as bad as not asking enough. "You clicked on the Notepad icon. Do you wish to run Notepad?" Okay, nobody would write a dialog box that stupid, would they? But the following dialog boxes don't really help much either: "You clicked on an mp3 file. ...

I have gazed into my crystal ball and emerged with a prediction for 2006. Revealing my prediction now may influence the event itself, so I will post only the hash for the prediction. I will post the actual prediction at the end of the year. The output of this program (after you replace "prediction goes here" with the actual prediction, of cour...

It's a lost smiley face.