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When you view your pictures with the Photo Gallery program which comes with Windows Vista, and which is also available for download from live.com, you might see a colored tinge. Where is the tinge coming from, and how do you get rid of it? Ironically, what you're actually seeing is the absence of a tinge, but you got so used to seeing the tinge, ...

A few years ago, Larry Osterman explained the famous beeping death. Windows 95 had its own noise-related death, what nobody has called ticking death, but that's what I'm going to call it. (Let's see how long before somebody decide to add it to Wikipedia.) When your machine fell into ticking death, each time you moved the mouse or pressed a ...

Sad but true: Once you document a file format, it becomes a de facto API. The Windows 95 team learned this the hard way when they set out to replace Program Manager with Explorer. Not only were the settings in the file documented, so too was the binary file format of files. The binary file format was included for diagnostic purposes: If you...

As MSDN correctly notes, "Timers are a limited global resource." How limited are they? (We're talking about timers created by .) Not as limited as they once were. Originally, there were eight timers total for the entire system. When there are only eight timers, you have to be very careful not to waste them and to destroy them when they aren't nee...

Today is the tenth anniversary of Windows Live Messenger. My colleague Danny Glasser provides some history behind the product, and you can watch a tenth anniversary celebration video created for the occasion. And thus is inspired today's Microspeak: Whale Boy. Whale Boy is the nickname for the pawn-shaped Messenger buddy icon. His normal state i...

Commenter Ulric asks, "Where did MoveTo(HDC, int, int) go?" Back in the 16-bit days, the function to move the current point was called , and its return value was a which encoded the previous position, packing two 16-bit coordinates into a single 32-bit value. As part of the transition to 32-bit Windows, GDI switched to using 32-bit coordinates ...

A little-known fact about MS-DOS is that it allowed spaces in file names. Sure, you were limited to 8.3, but a file called "" was legal in MS-DOS, and you could indeed create such a file. Good luck finding programs that didn't treat you as insane when you asked for that file, though. Although the file system supported files with spaces, practicall...

Commenter Brian Friesen asks why some functions (like SetFileAttributes) take a file name, while others (like SetFileTime) take a handle and why we can't have two versions of every API, one for each pattern. Second question first: No need to wait for the kernel folks to write such a function; you can already do it yourself! // Following "pid...

When I discussed years ago why operating system files tend to follow the old 8.3 file name convention, I neglected to mention why the old MS-DOS filename convention was 8.3 and not, say, 11.2 or 16.16. It's a holdover from CP/M. As I noted when I discussed the old MS-DOS wildcard matching rules, MS-DOS worked hard at being compatible with ...

If you spend time in kernel mode, you're accustomed to seeing functions with two-letter (or occasionally, three-letter) prefixes that indicate which component they belong to. What does the "Zw" mean? Answer: Nothing. The people who chose the letters wanted to pick something that was unlikely to collide with anything. Perhaps they had a pr...