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We saw last time that you can specify a separator in a menu item template by specifying zero for everything, even though technically you're supposed to pass MFT_SEPARATOR for the flags. What's the deal with that alternate form for menu item template separators? This goes back to the early days of the InsertMenu function (and its friends like Ap...

Menus aren't as complicated as dialogs. There are no fonts, no positioning, it's just a list of menu items and flags. Well, okay, there's the recursive part, when a menu has a submenu. But that's really the only wrinkle. Most of it is pretty boring. The 16-bit classic menu template begins with the following header: struct MENUHEADER16 { WORD ...

As with dialog templates, menu templates have also gone through a four-stage evolutionary process. People don't often generate menu templates in code, although the function is there waiting for you once you get the urge. As a result, there aren't many questions from people trying to generate menu templates dynamically, but I'm going to go into t...

If you look at the LOADPARMS32 structure, you'll find a horrific mishmash. Double-null-terminated strings, a null-terminated string, some WORDs, and even a Pascal-style string. What's going on here? Each of those members comes from a different era in time. The oldest member is the Pascal-style command line, which dates back to CP/M. On CP/M, co...

Among other responsibilities, the Archives department preserves Microsoft history, be it old hardware, old software, old documentation, or ephemera. Last year, one of my colleagues was cleaning out his office because he was moving to Granada, and of the junk he was going to throw out, the Archives asked me to save the following: and my favorit...

By convention, an enhanced version of a function is called , but there are many GDI functions that don't follow this conventions, most notably , which should have been named under the convention. Why don't the GDI functions follow that convention? Because they were named before the convention was established. Nothing nefarious, just an artifa...

Internet Explorer 3 came with the IRC client Comic Chat, a product from the research division. And it's not surprising that a program as goofy as Comic Chat would put something goofy in the default profile. If you didn't set a profile when you created your character, it defaulted to "This person is too lazy to create a profile entry." Of course,...

If you wander through MSDN, you may stumble across the function . The correct spelling is mnemonic. Why is the function name misspelled? "It was like that when I got here." The function was originally written for internal use only, and the person who wrote the function spelled the word incorrectly. Still, since it was an internal function, there ...

In this article on compatibility between the .NET Framework versions 1.1 and 2.0, there is a passing mention of a setting nicknamed the "Big Red Switch". The power switch on the original IBM PC really was big and red. Well, orange-red. Here's a picture of the power switch on an IBM PC-AT. Decide for yourself what color it is. In college, t...

As I noted a few days ago, there is weirdness associated with properties added by atom. This weirdness stems from the fact that adding properties by atom is really a hole in the original implementation rather than something designed on purpose. The original 16-bit code for adding and removing properties went roughly like this: First, let's l...